./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.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_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/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_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/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_ca977055-39fd-42aa-91c5-d0f264c12b8b/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 cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:21:41,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:21:41,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:21:41,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:21:41,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:21:41,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:21:41,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:21:41,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:21:41,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:21:41,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:21:41,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:21:41,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:21:41,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:21:41,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:21:41,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:21:41,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:21:41,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:21:41,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:21:41,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:21:41,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:21:41,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:21:41,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:21:41,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:21:41,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:21:41,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:21:41,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:21:41,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:21:41,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:21:41,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:21:41,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:21:41,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:21:41,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:21:41,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:21:41,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:21:41,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:21:41,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:21:41,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:21:41,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:21:41,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:21:41,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:21:41,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:21:41,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:21:41,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:21:41,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:21:41,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:21:41,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:21:41,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:21:41,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:21:41,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:21:41,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:21:41,262 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:21:41,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:21:41,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:21:41,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:21:41,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:21:41,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:21:41,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:21:41,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:21:41,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:21:41,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:21:41,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:21:41,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:21:41,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:21:41,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:21:41,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:21:41,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:21:41,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:21:41,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:21:41,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:21:41,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:21:41,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:21:41,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:21:41,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:21:41,271 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_ca977055-39fd-42aa-91c5-d0f264c12b8b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 [2021-11-13 18:21:41,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:21:41,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:21:41,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:21:41,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:21:41,666 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:21:41,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-13 18:21:41,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/data/938c30233/2097af3473ed44619e59135e862f1f81/FLAG557b6d7c9 [2021-11-13 18:21:43,104 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:21:43,105 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-13 18:21:43,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/data/938c30233/2097af3473ed44619e59135e862f1f81/FLAG557b6d7c9 [2021-11-13 18:21:43,713 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/data/938c30233/2097af3473ed44619e59135e862f1f81 [2021-11-13 18:21:43,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:21:43,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:21:43,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:21:43,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:21:43,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:21:43,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:21:43" (1/1) ... [2021-11-13 18:21:43,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2014df42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:43, skipping insertion in model container [2021-11-13 18:21:43,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:21:43" (1/1) ... [2021-11-13 18:21:43,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:21:43,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:21:49,483 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_ca977055-39fd-42aa-91c5-d0f264c12b8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-13 18:21:49,489 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_ca977055-39fd-42aa-91c5-d0f264c12b8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-13 18:21:49,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:21:49,597 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:21:50,295 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_ca977055-39fd-42aa-91c5-d0f264c12b8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-13 18:21:50,296 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_ca977055-39fd-42aa-91c5-d0f264c12b8b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-13 18:21:50,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:21:50,921 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:21:50,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50 WrapperNode [2021-11-13 18:21:50,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:21:50,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:21:50,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:21:50,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:21:50,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:51,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:51,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:21:51,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:21:51,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:21:51,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:21:51,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:51,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:51,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:51,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:51,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:51,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:52,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:52,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:21:52,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:21:52,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:21:52,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:21:52,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (1/1) ... [2021-11-13 18:21:52,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:21:52,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:21:52,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:21:52,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:21:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-13 18:21:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-13 18:21:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 18:21:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 18:21:52,439 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_phy_reg [2021-11-13 18:21:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_phy_reg [2021-11-13 18:21:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:21:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:21:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_force_ps [2021-11-13 18:21:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_force_ps [2021-11-13 18:21:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-13 18:21:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-13 18:21:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 18:21:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 18:21:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:21:52,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:21:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_del_timer [2021-11-13 18:21:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_del_timer [2021-11-13 18:21:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-13 18:21:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-13 18:21:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-13 18:21:52,442 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-13 18:21:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 18:21:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 18:21:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-13 18:21:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-13 18:21:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:21:52,443 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:21:52,444 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_disable [2021-11-13 18:21:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_disable [2021-11-13 18:21:52,444 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_io_resume [2021-11-13 18:21:52,444 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_io_resume [2021-11-13 18:21:52,444 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_restart_autoneg [2021-11-13 18:21:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_restart_autoneg [2021-11-13 18:21:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_close [2021-11-13 18:21:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_close [2021-11-13 18:21:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 18:21:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 18:21:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 18:21:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 18:21:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tpd [2021-11-13 18:21:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tpd [2021-11-13 18:21:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-13 18:21:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-13 18:21:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-13 18:21:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-13 18:21:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 18:21:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 18:21:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 18:21:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 18:21:52,462 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:21:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:21:52,462 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_irq [2021-11-13 18:21:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_irq [2021-11-13 18:21:52,463 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 18:21:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 18:21:52,463 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-13 18:21:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-13 18:21:52,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:21:52,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_106 [2021-11-13 18:21:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_106 [2021-11-13 18:21:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-13 18:21:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-13 18:21:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_shutdown [2021-11-13 18:21:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_shutdown [2021-11-13 18:21:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-13 18:21:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-13 18:21:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_check_eeprom_exist [2021-11-13 18:21:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_check_eeprom_exist [2021-11-13 18:21:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-13 18:21:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-13 18:21:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 18:21:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 18:21:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 18:21:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 18:21:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:21:52,466 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_hw_set_mac_addr [2021-11-13 18:21:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_hw_set_mac_addr [2021-11-13 18:21:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 18:21:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 18:21:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-13 18:21:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-13 18:21:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tx_buffer [2021-11-13 18:21:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tx_buffer [2021-11-13 18:21:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:21:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 18:21:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 18:21:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:21:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 18:21:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 18:21:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-13 18:21:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-13 18:21:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:21:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:21:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-13 18:21:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-13 18:21:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-13 18:21:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-13 18:21:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-13 18:21:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-13 18:21:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-13 18:21:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-13 18:21:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 18:21:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 18:21:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 18:21:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 18:21:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_reset [2021-11-13 18:21:52,472 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_reset [2021-11-13 18:21:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 18:21:52,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 18:21:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 18:21:52,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 18:21:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_down [2021-11-13 18:21:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_down [2021-11-13 18:21:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:21:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure __atl1e_vlan_mode [2021-11-13 18:21:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl1e_vlan_mode [2021-11-13 18:21:52,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-13 18:21:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-13 18:21:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-13 18:21:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-13 18:21:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-13 18:21:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-13 18:21:52,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 18:21:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 18:21:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 18:21:52,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 18:21:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:21:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 18:21:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-13 18:21:52,475 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-13 18:21:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-13 18:21:52,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-13 18:21:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-13 18:21:52,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-13 18:21:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-13 18:21:52,476 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-13 18:21:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_set_multi [2021-11-13 18:21:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_set_multi [2021-11-13 18:21:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_remove [2021-11-13 18:21:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_remove [2021-11-13 18:21:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-13 18:21:52,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-13 18:21:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-13 18:21:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-13 18:21:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-13 18:21:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-13 18:21:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-13 18:21:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-13 18:21:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 18:21:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 18:21:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 18:21:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 18:21:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_ring_resources [2021-11-13 18:21:52,479 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_ring_resources [2021-11-13 18:21:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-13 18:21:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-13 18:21:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-13 18:21:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-13 18:21:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 18:21:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 18:21:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_validate_option [2021-11-13 18:21:52,481 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_validate_option [2021-11-13 18:21:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-13 18:21:52,481 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-13 18:21:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-13 18:21:52,481 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-13 18:21:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:21:52,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:21:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-13 18:21:52,482 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-13 18:21:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-13 18:21:52,482 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-13 18:21:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:21:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:21:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:21:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:21:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-13 18:21:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-13 18:21:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-13 18:21:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-13 18:21:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-13 18:21:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-13 18:21:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-13 18:21:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-13 18:21:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_tx_ring [2021-11-13 18:21:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_tx_ring [2021-11-13 18:21:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-13 18:21:52,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-13 18:21:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 18:21:52,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 18:21:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-13 18:21:52,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-13 18:21:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-13 18:21:52,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-13 18:21:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-13 18:21:52,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-13 18:21:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 18:21:52,486 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 18:21:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:21:52,487 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:21:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_resume [2021-11-13 18:21:52,487 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_resume [2021-11-13 18:21:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 18:21:52,487 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 18:21:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-13 18:21:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-13 18:21:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:21:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 18:21:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 18:21:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-13 18:21:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-13 18:21:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 18:21:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 18:21:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_tx_timeout [2021-11-13 18:21:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_tx_timeout [2021-11-13 18:21:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_114 [2021-11-13 18:21:52,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_114 [2021-11-13 18:21:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:21:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_vlan_mode [2021-11-13 18:21:52,490 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_vlan_mode [2021-11-13 18:21:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_write_phy_reg [2021-11-13 18:21:52,490 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_write_phy_reg [2021-11-13 18:21:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-13 18:21:52,491 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-13 18:21:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_102 [2021-11-13 18:21:52,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_102 [2021-11-13 18:21:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_up [2021-11-13 18:21:52,491 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_up [2021-11-13 18:21:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:21:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_commit [2021-11-13 18:21:52,492 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_commit [2021-11-13 18:21:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-13 18:21:52,492 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-13 18:21:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-13 18:21:52,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-13 18:21:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 18:21:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 18:21:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 18:21:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 18:21:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-13 18:21:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-13 18:21:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:21:52,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:21:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reinit_locked [2021-11-13 18:21:52,494 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reinit_locked [2021-11-13 18:21:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_init [2021-11-13 18:21:52,494 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_init [2021-11-13 18:21:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_intr [2021-11-13 18:21:52,495 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_intr [2021-11-13 18:21:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 18:21:52,495 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 18:21:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-13 18:21:52,495 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-13 18:21:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_open [2021-11-13 18:21:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_open [2021-11-13 18:21:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 18:21:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 18:21:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-13 18:21:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-13 18:21:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_enable [2021-11-13 18:21:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_enable [2021-11-13 18:21:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:21:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:21:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:21:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_netpoll [2021-11-13 18:21:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_netpoll [2021-11-13 18:21:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:21:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:21:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_eeprom [2021-11-13 18:21:52,498 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_eeprom [2021-11-13 18:21:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_suspend [2021-11-13 18:21:52,498 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_suspend [2021-11-13 18:21:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-13 18:21:52,498 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-13 18:21:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 18:21:52,499 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 18:21:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_nway_reset [2021-11-13 18:21:52,499 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_nway_reset [2021-11-13 18:21:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_105 [2021-11-13 18:21:52,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_105 [2021-11-13 18:21:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-13 18:21:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-13 18:21:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_request_irq [2021-11-13 18:21:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_request_irq [2021-11-13 18:21:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-13 18:21:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-13 18:21:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 18:21:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 18:21:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-13 18:21:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-13 18:21:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-13 18:21:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-13 18:21:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_eeprom_len [2021-11-13 18:21:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_eeprom_len [2021-11-13 18:21:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 18:21:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 18:21:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-13 18:21:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-13 18:21:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reset_hw [2021-11-13 18:21:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reset_hw [2021-11-13 18:21:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-13 18:21:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-13 18:21:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-13 18:21:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-13 18:21:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:21:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-13 18:21:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-13 18:21:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 18:21:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 18:21:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_regs_len [2021-11-13 18:21:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_regs_len [2021-11-13 18:21:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_rx_ring [2021-11-13 18:21:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_rx_ring [2021-11-13 18:21:54,598 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:22:20,363 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-13 18:22:20,648 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:22:20,648 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:22:20,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:22:20 BoogieIcfgContainer [2021-11-13 18:22:20,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:22:20,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:22:20,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:22:20,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:22:20,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:21:43" (1/3) ... [2021-11-13 18:22:20,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b718845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:22:20, skipping insertion in model container [2021-11-13 18:22:20,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:50" (2/3) ... [2021-11-13 18:22:20,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b718845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:22:20, skipping insertion in model container [2021-11-13 18:22:20,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:22:20" (3/3) ... [2021-11-13 18:22:20,676 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-13 18:22:20,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:22:20,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:22:20,791 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:22:20,804 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 18:22:20,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:22:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 2837 states, 1921 states have (on average 1.2613222280062468) internal successors, (2423), 1946 states have internal predecessors, (2423), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) [2021-11-13 18:22:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-13 18:22:20,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:20,991 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 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] [2021-11-13 18:22:20,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash -24091557, now seen corresponding path program 1 times [2021-11-13 18:22:21,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:21,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594740327] [2021-11-13 18:22:21,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:21,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:22:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:22:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:22:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:22:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:22:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:22:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:22:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:22:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 18:22:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:22:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 18:22:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 18:22:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 18:22:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:22:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-13 18:22:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-13 18:22:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:22:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:22:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 18:22:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-13 18:22:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:22:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 18:22:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2021-11-13 18:22:23,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:23,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594740327] [2021-11-13 18:22:23,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594740327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:23,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:23,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:22:23,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427812124] [2021-11-13 18:22:23,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:23,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:22:23,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:22:23,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:22:23,301 INFO L87 Difference]: Start difference. First operand has 2837 states, 1921 states have (on average 1.2613222280062468) internal successors, (2423), 1946 states have internal predecessors, (2423), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 18:22:25,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:27,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:37,988 INFO L93 Difference]: Finished difference Result 7783 states and 10945 transitions. [2021-11-13 18:22:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:22:37,991 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), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 231 [2021-11-13 18:22:37,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:38,078 INFO L225 Difference]: With dead ends: 7783 [2021-11-13 18:22:38,078 INFO L226 Difference]: Without dead ends: 4893 [2021-11-13 18:22:38,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 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 18:22:38,116 INFO L933 BasicCegarLoop]: 4108 mSDtfsCounter, 3707 mSDsluCounter, 4515 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 1870 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12068.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 8623 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 144.27ms SdHoareTripleChecker+Time, 1870 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13816.86ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:38,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4243 Valid, 8623 Invalid, 4262 Unknown, 0 Unchecked, 144.27ms Time], IncrementalHoareTripleChecker [1870 Valid, 2390 Invalid, 2 Unknown, 0 Unchecked, 13816.86ms Time] [2021-11-13 18:22:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2021-11-13 18:22:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4656. [2021-11-13 18:22:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4656 states, 3168 states have (on average 1.2512626262626263) internal successors, (3964), 3211 states have internal predecessors, (3964), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2021-11-13 18:22:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4656 states to 4656 states and 6408 transitions. [2021-11-13 18:22:38,671 INFO L78 Accepts]: Start accepts. Automaton has 4656 states and 6408 transitions. Word has length 231 [2021-11-13 18:22:38,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:38,673 INFO L470 AbstractCegarLoop]: Abstraction has 4656 states and 6408 transitions. [2021-11-13 18:22:38,674 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), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 18:22:38,674 INFO L276 IsEmpty]: Start isEmpty. Operand 4656 states and 6408 transitions. [2021-11-13 18:22:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-13 18:22:38,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:38,697 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:38,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:22:38,702 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:38,704 INFO L85 PathProgramCache]: Analyzing trace with hash 757183165, now seen corresponding path program 1 times [2021-11-13 18:22:38,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:38,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146854983] [2021-11-13 18:22:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:38,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:22:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:22:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:22:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:22:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:22:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:22:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:22:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:22:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 18:22:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:22:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 18:22:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 18:22:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 18:22:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:22:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-13 18:22:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-13 18:22:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 18:22:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-13 18:22:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:22:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-13 18:22:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-13 18:22:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-11-13 18:22:39,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:39,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146854983] [2021-11-13 18:22:39,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146854983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:39,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:39,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:22:39,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687242191] [2021-11-13 18:22:39,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:39,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:22:39,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:22:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:22:39,891 INFO L87 Difference]: Start difference. First operand 4656 states and 6408 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 18:22:42,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:44,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:22:46,171 WARN L515 Checker$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 18:22:58,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:04,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:06,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:11,697 INFO L93 Difference]: Finished difference Result 13379 states and 18636 transitions. [2021-11-13 18:23:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:23:11,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 239 [2021-11-13 18:23:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:11,799 INFO L225 Difference]: With dead ends: 13379 [2021-11-13 18:23:11,799 INFO L226 Difference]: Without dead ends: 8756 [2021-11-13 18:23:11,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 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 18:23:11,835 INFO L933 BasicCegarLoop]: 4913 mSDtfsCounter, 5175 mSDsluCounter, 6427 mSDsCounter, 0 mSdLazyCounter, 4569 mSolverCounterSat, 3478 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28200.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5615 SdHoareTripleChecker+Valid, 11340 SdHoareTripleChecker+Invalid, 8053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 151.13ms SdHoareTripleChecker+Time, 3478 IncrementalHoareTripleChecker+Valid, 4569 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30680.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:11,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5615 Valid, 11340 Invalid, 8053 Unknown, 0 Unchecked, 151.13ms Time], IncrementalHoareTripleChecker [3478 Valid, 4569 Invalid, 6 Unknown, 0 Unchecked, 30680.40ms Time] [2021-11-13 18:23:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2021-11-13 18:23:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 7470. [2021-11-13 18:23:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7470 states, 5113 states have (on average 1.2499511050264034) internal successors, (6391), 5174 states have internal predecessors, (6391), 1913 states have call successors, (1913), 444 states have call predecessors, (1913), 443 states have return successors, (1913), 1903 states have call predecessors, (1913), 1913 states have call successors, (1913) [2021-11-13 18:23:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7470 states to 7470 states and 10217 transitions. [2021-11-13 18:23:12,441 INFO L78 Accepts]: Start accepts. Automaton has 7470 states and 10217 transitions. Word has length 239 [2021-11-13 18:23:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:12,442 INFO L470 AbstractCegarLoop]: Abstraction has 7470 states and 10217 transitions. [2021-11-13 18:23:12,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 18:23:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7470 states and 10217 transitions. [2021-11-13 18:23:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-13 18:23:12,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:12,460 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:12,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:23:12,461 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1589250064, now seen corresponding path program 1 times [2021-11-13 18:23:12,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:12,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787582641] [2021-11-13 18:23:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:12,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:12,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:23:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:12,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:23:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:23:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:23:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:23:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:23:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:23:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 18:23:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:23:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 18:23:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 18:23:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 18:23:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:23:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-13 18:23:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-13 18:23:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-13 18:23:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-13 18:23:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-11-13 18:23:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-11-13 18:23:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-11-13 18:23:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-11-13 18:23:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:23:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-13 18:23:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-13 18:23:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2021-11-13 18:23:13,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:13,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787582641] [2021-11-13 18:23:13,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787582641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:13,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:13,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:23:13,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559719040] [2021-11-13 18:23:13,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:13,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:23:13,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:13,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:23:13,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:23:13,573 INFO L87 Difference]: Start difference. First operand 7470 states and 10217 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 18:23:15,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:17,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:20,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:30,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:34,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:37,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:23:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:44,456 INFO L93 Difference]: Finished difference Result 16669 states and 23042 transitions. [2021-11-13 18:23:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:23:44,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 291 [2021-11-13 18:23:44,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:44,550 INFO L225 Difference]: With dead ends: 16669 [2021-11-13 18:23:44,551 INFO L226 Difference]: Without dead ends: 9232 [2021-11-13 18:23:44,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 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 18:23:44,600 INFO L933 BasicCegarLoop]: 5264 mSDtfsCounter, 4898 mSDsluCounter, 6808 mSDsCounter, 0 mSdLazyCounter, 4734 mSolverCounterSat, 3202 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27502.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5329 SdHoareTripleChecker+Valid, 12072 SdHoareTripleChecker+Invalid, 7942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 109.89ms SdHoareTripleChecker+Time, 3202 IncrementalHoareTripleChecker+Valid, 4734 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29992.41ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:44,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5329 Valid, 12072 Invalid, 7942 Unknown, 0 Unchecked, 109.89ms Time], IncrementalHoareTripleChecker [3202 Valid, 4734 Invalid, 6 Unknown, 0 Unchecked, 29992.41ms Time] [2021-11-13 18:23:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9232 states. [2021-11-13 18:23:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9232 to 7937. [2021-11-13 18:23:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 5424 states have (on average 1.247787610619469) internal successors, (6768), 5485 states have internal predecessors, (6768), 2032 states have call successors, (2032), 481 states have call predecessors, (2032), 480 states have return successors, (2032), 2022 states have call predecessors, (2032), 2032 states have call successors, (2032) [2021-11-13 18:23:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 10832 transitions. [2021-11-13 18:23:45,318 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 10832 transitions. Word has length 291 [2021-11-13 18:23:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:45,320 INFO L470 AbstractCegarLoop]: Abstraction has 7937 states and 10832 transitions. [2021-11-13 18:23:45,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 18:23:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 10832 transitions. [2021-11-13 18:23:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-11-13 18:23:45,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:45,339 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:23:45,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:23:45,340 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:45,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:45,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2051024223, now seen corresponding path program 1 times [2021-11-13 18:23:45,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:45,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047525961] [2021-11-13 18:23:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:45,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:45,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:23:45,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086025125] [2021-11-13 18:23:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:45,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:45,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:45,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:45,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:23:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:47,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 4408 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:23:47,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:23:49,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:49,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:49,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047525961] [2021-11-13 18:23:49,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:23:49,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086025125] [2021-11-13 18:23:49,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086025125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:49,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:49,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:23:49,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757728037] [2021-11-13 18:23:49,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:49,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:23:49,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:23:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:23:49,302 INFO L87 Difference]: Start difference. First operand 7937 states and 10832 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:23:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:49,552 INFO L93 Difference]: Finished difference Result 15841 states and 21634 transitions. [2021-11-13 18:23:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:23:49,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 303 [2021-11-13 18:23:49,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:49,620 INFO L225 Difference]: With dead ends: 15841 [2021-11-13 18:23:49,620 INFO L226 Difference]: Without dead ends: 7937 [2021-11-13 18:23:49,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:23:49,662 INFO L933 BasicCegarLoop]: 3853 mSDtfsCounter, 3681 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3681 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:49,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3681 Valid, 3853 Invalid, 1 Unknown, 0 Unchecked, 7.30ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.38ms Time] [2021-11-13 18:23:49,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2021-11-13 18:23:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7937. [2021-11-13 18:23:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 5424 states have (on average 1.2472345132743363) internal successors, (6765), 5485 states have internal predecessors, (6765), 2032 states have call successors, (2032), 481 states have call predecessors, (2032), 480 states have return successors, (2032), 2022 states have call predecessors, (2032), 2032 states have call successors, (2032) [2021-11-13 18:23:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 10829 transitions. [2021-11-13 18:23:50,425 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 10829 transitions. Word has length 303 [2021-11-13 18:23:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:50,427 INFO L470 AbstractCegarLoop]: Abstraction has 7937 states and 10829 transitions. [2021-11-13 18:23:50,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:23:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 10829 transitions. [2021-11-13 18:23:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-13 18:23:50,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:50,447 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:23:50,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:50,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:50,662 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:50,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1224467345, now seen corresponding path program 1 times [2021-11-13 18:23:50,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:50,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853513384] [2021-11-13 18:23:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:50,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:50,924 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:23:50,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986866452] [2021-11-13 18:23:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:50,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:50,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:50,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:50,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:23:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:53,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 4409 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:23:53,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:23:54,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:54,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:54,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853513384] [2021-11-13 18:23:54,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:23:54,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986866452] [2021-11-13 18:23:54,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986866452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:54,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:54,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:23:54,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396049706] [2021-11-13 18:23:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:54,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:23:54,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:23:54,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:23:54,363 INFO L87 Difference]: Start difference. First operand 7937 states and 10829 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:23:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:54,628 INFO L93 Difference]: Finished difference Result 15841 states and 21628 transitions. [2021-11-13 18:23:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:23:54,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 304 [2021-11-13 18:23:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:54,670 INFO L225 Difference]: With dead ends: 15841 [2021-11-13 18:23:54,670 INFO L226 Difference]: Without dead ends: 7937 [2021-11-13 18:23:54,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:23:54,707 INFO L933 BasicCegarLoop]: 3852 mSDtfsCounter, 3679 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3679 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:54,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3679 Valid, 3852 Invalid, 1 Unknown, 0 Unchecked, 7.11ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.43ms Time] [2021-11-13 18:23:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2021-11-13 18:23:55,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7937. [2021-11-13 18:23:55,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 5424 states have (on average 1.2466814159292035) internal successors, (6762), 5485 states have internal predecessors, (6762), 2032 states have call successors, (2032), 481 states have call predecessors, (2032), 480 states have return successors, (2032), 2022 states have call predecessors, (2032), 2032 states have call successors, (2032) [2021-11-13 18:23:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 10826 transitions. [2021-11-13 18:23:55,319 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 10826 transitions. Word has length 304 [2021-11-13 18:23:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:55,320 INFO L470 AbstractCegarLoop]: Abstraction has 7937 states and 10826 transitions. [2021-11-13 18:23:55,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:23:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 10826 transitions. [2021-11-13 18:23:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-13 18:23:55,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:55,336 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:23:55,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:55,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:55,555 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:55,555 INFO L85 PathProgramCache]: Analyzing trace with hash -199992547, now seen corresponding path program 1 times [2021-11-13 18:23:55,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:55,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617812825] [2021-11-13 18:23:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:55,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:55,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:23:55,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929372132] [2021-11-13 18:23:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:55,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:55,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:55,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:23:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:57,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 4410 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:23:57,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:23:59,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:59,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:59,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617812825] [2021-11-13 18:23:59,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:23:59,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929372132] [2021-11-13 18:23:59,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929372132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:59,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:59,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:23:59,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949532518] [2021-11-13 18:23:59,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:59,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:23:59,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:59,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:23:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:23:59,104 INFO L87 Difference]: Start difference. First operand 7937 states and 10826 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:23:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:59,376 INFO L93 Difference]: Finished difference Result 15841 states and 21622 transitions. [2021-11-13 18:23:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:23:59,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 305 [2021-11-13 18:23:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:59,421 INFO L225 Difference]: With dead ends: 15841 [2021-11-13 18:23:59,421 INFO L226 Difference]: Without dead ends: 7937 [2021-11-13 18:23:59,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:23:59,454 INFO L933 BasicCegarLoop]: 3851 mSDtfsCounter, 3677 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3677 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:59,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3677 Valid, 3851 Invalid, 1 Unknown, 0 Unchecked, 6.84ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.44ms Time] [2021-11-13 18:23:59,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2021-11-13 18:24:00,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7937. [2021-11-13 18:24:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 5424 states have (on average 1.2461283185840708) internal successors, (6759), 5485 states have internal predecessors, (6759), 2032 states have call successors, (2032), 481 states have call predecessors, (2032), 480 states have return successors, (2032), 2022 states have call predecessors, (2032), 2032 states have call successors, (2032) [2021-11-13 18:24:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 10823 transitions. [2021-11-13 18:24:00,135 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 10823 transitions. Word has length 305 [2021-11-13 18:24:00,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:00,136 INFO L470 AbstractCegarLoop]: Abstraction has 7937 states and 10823 transitions. [2021-11-13 18:24:00,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 10823 transitions. [2021-11-13 18:24:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-13 18:24:00,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:00,153 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:00,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:00,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:00,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:00,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1294059635, now seen corresponding path program 1 times [2021-11-13 18:24:00,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:00,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179664036] [2021-11-13 18:24:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:00,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:00,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:00,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316385443] [2021-11-13 18:24:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:00,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:00,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:00,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:00,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:24:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:02,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 4411 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:02,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:04,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:04,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:04,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179664036] [2021-11-13 18:24:04,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:04,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316385443] [2021-11-13 18:24:04,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316385443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:04,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:04,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:04,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436856513] [2021-11-13 18:24:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:04,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:04,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:04,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:04,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:04,058 INFO L87 Difference]: Start difference. First operand 7937 states and 10823 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:04,366 INFO L93 Difference]: Finished difference Result 15841 states and 21616 transitions. [2021-11-13 18:24:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:04,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 306 [2021-11-13 18:24:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:04,414 INFO L225 Difference]: With dead ends: 15841 [2021-11-13 18:24:04,414 INFO L226 Difference]: Without dead ends: 7937 [2021-11-13 18:24:04,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:04,447 INFO L933 BasicCegarLoop]: 3850 mSDtfsCounter, 3675 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.37ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:04,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3675 Valid, 3850 Invalid, 1 Unknown, 0 Unchecked, 7.61ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.37ms Time] [2021-11-13 18:24:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2021-11-13 18:24:05,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7937. [2021-11-13 18:24:05,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 5424 states have (on average 1.2455752212389382) internal successors, (6756), 5485 states have internal predecessors, (6756), 2032 states have call successors, (2032), 481 states have call predecessors, (2032), 480 states have return successors, (2032), 2022 states have call predecessors, (2032), 2032 states have call successors, (2032) [2021-11-13 18:24:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 10820 transitions. [2021-11-13 18:24:05,100 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 10820 transitions. Word has length 306 [2021-11-13 18:24:05,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:05,102 INFO L470 AbstractCegarLoop]: Abstraction has 7937 states and 10820 transitions. [2021-11-13 18:24:05,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 10820 transitions. [2021-11-13 18:24:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-13 18:24:05,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:05,119 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:05,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:05,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-13 18:24:05,334 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:05,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash -735884391, now seen corresponding path program 1 times [2021-11-13 18:24:05,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:05,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252719381] [2021-11-13 18:24:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:05,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:05,553 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:05,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477252910] [2021-11-13 18:24:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:05,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:05,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:05,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:05,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:24:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:07,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 4412 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:07,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:08,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:08,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:08,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252719381] [2021-11-13 18:24:08,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:08,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477252910] [2021-11-13 18:24:08,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477252910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:08,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:08,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:08,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042171285] [2021-11-13 18:24:08,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:08,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:08,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:08,977 INFO L87 Difference]: Start difference. First operand 7937 states and 10820 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:09,284 INFO L93 Difference]: Finished difference Result 15841 states and 21610 transitions. [2021-11-13 18:24:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:09,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 307 [2021-11-13 18:24:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:09,330 INFO L225 Difference]: With dead ends: 15841 [2021-11-13 18:24:09,331 INFO L226 Difference]: Without dead ends: 7937 [2021-11-13 18:24:09,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:09,361 INFO L933 BasicCegarLoop]: 3849 mSDtfsCounter, 3673 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3673 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:09,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3673 Valid, 3849 Invalid, 1 Unknown, 0 Unchecked, 7.10ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.51ms Time] [2021-11-13 18:24:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2021-11-13 18:24:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7937. [2021-11-13 18:24:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 5424 states have (on average 1.2450221238938053) internal successors, (6753), 5485 states have internal predecessors, (6753), 2032 states have call successors, (2032), 481 states have call predecessors, (2032), 480 states have return successors, (2032), 2022 states have call predecessors, (2032), 2032 states have call successors, (2032) [2021-11-13 18:24:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 10817 transitions. [2021-11-13 18:24:10,097 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 10817 transitions. Word has length 307 [2021-11-13 18:24:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:10,098 INFO L470 AbstractCegarLoop]: Abstraction has 7937 states and 10817 transitions. [2021-11-13 18:24:10,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 10817 transitions. [2021-11-13 18:24:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-13 18:24:10,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:10,112 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:10,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:10,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 18:24:10,326 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:10,327 INFO L85 PathProgramCache]: Analyzing trace with hash -497804407, now seen corresponding path program 1 times [2021-11-13 18:24:10,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:10,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135294036] [2021-11-13 18:24:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:10,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:10,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:10,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079284816] [2021-11-13 18:24:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:10,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:10,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:10,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:24:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:12,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 4413 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:12,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:14,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:14,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:14,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135294036] [2021-11-13 18:24:14,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:14,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079284816] [2021-11-13 18:24:14,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079284816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:14,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:14,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:14,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777532340] [2021-11-13 18:24:14,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:14,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:14,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:14,056 INFO L87 Difference]: Start difference. First operand 7937 states and 10817 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:14,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:14,382 INFO L93 Difference]: Finished difference Result 15841 states and 21604 transitions. [2021-11-13 18:24:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:14,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 308 [2021-11-13 18:24:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:14,561 INFO L225 Difference]: With dead ends: 15841 [2021-11-13 18:24:14,561 INFO L226 Difference]: Without dead ends: 7937 [2021-11-13 18:24:14,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:14,589 INFO L933 BasicCegarLoop]: 3848 mSDtfsCounter, 3671 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3671 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:14,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3671 Valid, 3848 Invalid, 1 Unknown, 0 Unchecked, 7.06ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.47ms Time] [2021-11-13 18:24:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2021-11-13 18:24:15,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7937. [2021-11-13 18:24:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 5424 states have (on average 1.2444690265486726) internal successors, (6750), 5485 states have internal predecessors, (6750), 2032 states have call successors, (2032), 481 states have call predecessors, (2032), 480 states have return successors, (2032), 2022 states have call predecessors, (2032), 2032 states have call successors, (2032) [2021-11-13 18:24:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 10814 transitions. [2021-11-13 18:24:15,158 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 10814 transitions. Word has length 308 [2021-11-13 18:24:15,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:15,159 INFO L470 AbstractCegarLoop]: Abstraction has 7937 states and 10814 transitions. [2021-11-13 18:24:15,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 10814 transitions. [2021-11-13 18:24:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-13 18:24:15,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:15,173 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:15,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:15,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:15,398 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:15,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1592742891, now seen corresponding path program 1 times [2021-11-13 18:24:15,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:15,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710092038] [2021-11-13 18:24:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:15,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:15,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:15,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402945815] [2021-11-13 18:24:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:15,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:15,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:15,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:15,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:24:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:17,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 4414 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:17,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:18,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:18,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:18,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710092038] [2021-11-13 18:24:18,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:18,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402945815] [2021-11-13 18:24:18,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402945815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:18,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:18,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:18,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103531916] [2021-11-13 18:24:18,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:18,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:18,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:18,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:18,987 INFO L87 Difference]: Start difference. First operand 7937 states and 10814 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:19,453 INFO L93 Difference]: Finished difference Result 15841 states and 21598 transitions. [2021-11-13 18:24:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:19,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 309 [2021-11-13 18:24:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:19,490 INFO L225 Difference]: With dead ends: 15841 [2021-11-13 18:24:19,490 INFO L226 Difference]: Without dead ends: 7937 [2021-11-13 18:24:19,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:19,517 INFO L933 BasicCegarLoop]: 3847 mSDtfsCounter, 3669 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3669 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.39ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:19,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3669 Valid, 3847 Invalid, 1 Unknown, 0 Unchecked, 7.13ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.39ms Time] [2021-11-13 18:24:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2021-11-13 18:24:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7937. [2021-11-13 18:24:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 5424 states have (on average 1.2439159292035398) internal successors, (6747), 5485 states have internal predecessors, (6747), 2032 states have call successors, (2032), 481 states have call predecessors, (2032), 480 states have return successors, (2032), 2022 states have call predecessors, (2032), 2032 states have call successors, (2032) [2021-11-13 18:24:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 10811 transitions. [2021-11-13 18:24:20,111 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 10811 transitions. Word has length 309 [2021-11-13 18:24:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:20,112 INFO L470 AbstractCegarLoop]: Abstraction has 7937 states and 10811 transitions. [2021-11-13 18:24:20,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 10811 transitions. [2021-11-13 18:24:20,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-13 18:24:20,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:20,125 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:20,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:20,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:20,355 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:20,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:20,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1061580923, now seen corresponding path program 1 times [2021-11-13 18:24:20,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:20,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332664784] [2021-11-13 18:24:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:20,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:20,577 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:20,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712431230] [2021-11-13 18:24:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:20,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:20,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:20,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:20,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:24:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:22,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 4415 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:22,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:23,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:23,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:23,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332664784] [2021-11-13 18:24:23,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:23,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712431230] [2021-11-13 18:24:23,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712431230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:23,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:23,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:23,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036431104] [2021-11-13 18:24:23,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:23,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:23,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:24,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:24,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:24,000 INFO L87 Difference]: Start difference. First operand 7937 states and 10811 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:24,481 INFO L93 Difference]: Finished difference Result 15841 states and 21592 transitions. [2021-11-13 18:24:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 310 [2021-11-13 18:24:24,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:24,524 INFO L225 Difference]: With dead ends: 15841 [2021-11-13 18:24:24,524 INFO L226 Difference]: Without dead ends: 7937 [2021-11-13 18:24:24,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:24,556 INFO L933 BasicCegarLoop]: 3846 mSDtfsCounter, 3667 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3667 SdHoareTripleChecker+Valid, 3846 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.48ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:24,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3667 Valid, 3846 Invalid, 1 Unknown, 0 Unchecked, 7.30ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.48ms Time] [2021-11-13 18:24:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2021-11-13 18:24:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7937. [2021-11-13 18:24:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7937 states, 5424 states have (on average 1.2433628318584071) internal successors, (6744), 5485 states have internal predecessors, (6744), 2032 states have call successors, (2032), 481 states have call predecessors, (2032), 480 states have return successors, (2032), 2022 states have call predecessors, (2032), 2032 states have call successors, (2032) [2021-11-13 18:24:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 10808 transitions. [2021-11-13 18:24:25,156 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 10808 transitions. Word has length 310 [2021-11-13 18:24:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:25,157 INFO L470 AbstractCegarLoop]: Abstraction has 7937 states and 10808 transitions. [2021-11-13 18:24:25,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 10808 transitions. [2021-11-13 18:24:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-13 18:24:25,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:25,169 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:25,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:25,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 18:24:25,382 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:25,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1660912495, now seen corresponding path program 1 times [2021-11-13 18:24:25,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:25,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680604893] [2021-11-13 18:24:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:25,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:25,599 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:25,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985939614] [2021-11-13 18:24:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:25,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:25,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:25,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:25,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 18:24:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:27,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 4416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:27,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:29,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:29,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:29,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680604893] [2021-11-13 18:24:29,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:29,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985939614] [2021-11-13 18:24:29,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985939614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:29,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:29,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:29,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972583074] [2021-11-13 18:24:29,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:29,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:29,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:29,142 INFO L87 Difference]: Start difference. First operand 7937 states and 10808 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:29,645 INFO L93 Difference]: Finished difference Result 16016 states and 21785 transitions. [2021-11-13 18:24:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:29,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 311 [2021-11-13 18:24:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:29,672 INFO L225 Difference]: With dead ends: 16016 [2021-11-13 18:24:29,672 INFO L226 Difference]: Without dead ends: 8112 [2021-11-13 18:24:29,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:29,697 INFO L933 BasicCegarLoop]: 3898 mSDtfsCounter, 3593 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 4032 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:29,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3593 Valid, 4032 Invalid, 3 Unknown, 0 Unchecked, 8.09ms Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 4.32ms Time] [2021-11-13 18:24:29,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2021-11-13 18:24:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 8112. [2021-11-13 18:24:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 5542 states have (on average 1.2425117286178275) internal successors, (6886), 5603 states have internal predecessors, (6886), 2059 states have call successors, (2059), 511 states have call predecessors, (2059), 510 states have return successors, (2059), 2049 states have call predecessors, (2059), 2059 states have call successors, (2059) [2021-11-13 18:24:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 11004 transitions. [2021-11-13 18:24:30,283 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 11004 transitions. Word has length 311 [2021-11-13 18:24:30,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:30,284 INFO L470 AbstractCegarLoop]: Abstraction has 8112 states and 11004 transitions. [2021-11-13 18:24:30,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 11004 transitions. [2021-11-13 18:24:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-13 18:24:30,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:30,292 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:30,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:30,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:30,498 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:30,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1349161857, now seen corresponding path program 1 times [2021-11-13 18:24:30,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:30,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650337735] [2021-11-13 18:24:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:30,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:30,716 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:30,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465814953] [2021-11-13 18:24:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:30,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:30,718 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:30,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 18:24:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:32,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 4417 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:32,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:34,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:34,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:34,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650337735] [2021-11-13 18:24:34,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:34,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465814953] [2021-11-13 18:24:34,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465814953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:34,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:34,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:34,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352932562] [2021-11-13 18:24:34,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:34,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:34,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:34,044 INFO L87 Difference]: Start difference. First operand 8112 states and 11004 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:34,532 INFO L93 Difference]: Finished difference Result 16191 states and 21978 transitions. [2021-11-13 18:24:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 312 [2021-11-13 18:24:34,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:34,562 INFO L225 Difference]: With dead ends: 16191 [2021-11-13 18:24:34,562 INFO L226 Difference]: Without dead ends: 8112 [2021-11-13 18:24:34,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:34,585 INFO L933 BasicCegarLoop]: 3844 mSDtfsCounter, 3663 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3663 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:34,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3663 Valid, 3844 Invalid, 1 Unknown, 0 Unchecked, 7.13ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.55ms Time] [2021-11-13 18:24:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2021-11-13 18:24:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 8112. [2021-11-13 18:24:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 5542 states have (on average 1.2419704077950198) internal successors, (6883), 5603 states have internal predecessors, (6883), 2059 states have call successors, (2059), 511 states have call predecessors, (2059), 510 states have return successors, (2059), 2049 states have call predecessors, (2059), 2059 states have call successors, (2059) [2021-11-13 18:24:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 11001 transitions. [2021-11-13 18:24:35,102 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 11001 transitions. Word has length 312 [2021-11-13 18:24:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:35,103 INFO L470 AbstractCegarLoop]: Abstraction has 8112 states and 11001 transitions. [2021-11-13 18:24:35,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 11001 transitions. [2021-11-13 18:24:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-13 18:24:35,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:35,115 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:35,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:35,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:35,335 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:35,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash 286702861, now seen corresponding path program 1 times [2021-11-13 18:24:35,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:35,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512898234] [2021-11-13 18:24:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:35,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:35,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:35,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46056851] [2021-11-13 18:24:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:35,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:35,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:35,547 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:35,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-13 18:24:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:37,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 4418 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:37,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:39,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:39,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:39,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512898234] [2021-11-13 18:24:39,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:39,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46056851] [2021-11-13 18:24:39,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46056851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:39,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:39,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:39,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163652892] [2021-11-13 18:24:39,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:39,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:39,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:39,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:39,235 INFO L87 Difference]: Start difference. First operand 8112 states and 11001 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:39,651 INFO L93 Difference]: Finished difference Result 16191 states and 21972 transitions. [2021-11-13 18:24:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:39,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 313 [2021-11-13 18:24:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:39,683 INFO L225 Difference]: With dead ends: 16191 [2021-11-13 18:24:39,683 INFO L226 Difference]: Without dead ends: 8112 [2021-11-13 18:24:39,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:39,707 INFO L933 BasicCegarLoop]: 3843 mSDtfsCounter, 3661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3661 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.41ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:39,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3661 Valid, 3843 Invalid, 1 Unknown, 0 Unchecked, 7.09ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.41ms Time] [2021-11-13 18:24:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2021-11-13 18:24:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 8112. [2021-11-13 18:24:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 5542 states have (on average 1.2414290869722122) internal successors, (6880), 5603 states have internal predecessors, (6880), 2059 states have call successors, (2059), 511 states have call predecessors, (2059), 510 states have return successors, (2059), 2049 states have call predecessors, (2059), 2059 states have call successors, (2059) [2021-11-13 18:24:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 10998 transitions. [2021-11-13 18:24:40,224 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 10998 transitions. Word has length 313 [2021-11-13 18:24:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:40,226 INFO L470 AbstractCegarLoop]: Abstraction has 8112 states and 10998 transitions. [2021-11-13 18:24:40,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 10998 transitions. [2021-11-13 18:24:40,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-13 18:24:40,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:40,234 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:40,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:40,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:40,435 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:40,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:40,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1824728957, now seen corresponding path program 1 times [2021-11-13 18:24:40,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:40,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480876199] [2021-11-13 18:24:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:40,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:40,641 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:40,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679831303] [2021-11-13 18:24:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:40,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:40,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:40,643 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:40,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-13 18:24:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:42,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 4419 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:42,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:44,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:44,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:44,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480876199] [2021-11-13 18:24:44,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:44,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679831303] [2021-11-13 18:24:44,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679831303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:44,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:44,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:44,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758670474] [2021-11-13 18:24:44,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:44,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:44,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:44,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:44,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:44,113 INFO L87 Difference]: Start difference. First operand 8112 states and 10998 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:44,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:44,629 INFO L93 Difference]: Finished difference Result 16191 states and 21966 transitions. [2021-11-13 18:24:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:44,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 314 [2021-11-13 18:24:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:44,671 INFO L225 Difference]: With dead ends: 16191 [2021-11-13 18:24:44,671 INFO L226 Difference]: Without dead ends: 8112 [2021-11-13 18:24:44,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:44,694 INFO L933 BasicCegarLoop]: 3842 mSDtfsCounter, 3659 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3659 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.54ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:44,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3659 Valid, 3842 Invalid, 1 Unknown, 0 Unchecked, 8.67ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.54ms Time] [2021-11-13 18:24:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2021-11-13 18:24:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 8112. [2021-11-13 18:24:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 5542 states have (on average 1.2408877661494044) internal successors, (6877), 5603 states have internal predecessors, (6877), 2059 states have call successors, (2059), 511 states have call predecessors, (2059), 510 states have return successors, (2059), 2049 states have call predecessors, (2059), 2059 states have call successors, (2059) [2021-11-13 18:24:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 10995 transitions. [2021-11-13 18:24:45,234 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 10995 transitions. Word has length 314 [2021-11-13 18:24:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:45,235 INFO L470 AbstractCegarLoop]: Abstraction has 8112 states and 10995 transitions. [2021-11-13 18:24:45,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:45,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 10995 transitions. [2021-11-13 18:24:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-13 18:24:45,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:45,247 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:45,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:45,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-13 18:24:45,474 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1921553015, now seen corresponding path program 1 times [2021-11-13 18:24:45,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:45,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089918881] [2021-11-13 18:24:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:45,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:45,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:45,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703365894] [2021-11-13 18:24:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:45,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:45,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:45,675 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:45,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 18:24:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:47,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 4420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:47,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:49,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:49,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:49,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089918881] [2021-11-13 18:24:49,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:49,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703365894] [2021-11-13 18:24:49,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703365894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:49,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:49,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:49,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199739780] [2021-11-13 18:24:49,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:49,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:49,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:49,039 INFO L87 Difference]: Start difference. First operand 8112 states and 10995 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:49,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:49,502 INFO L93 Difference]: Finished difference Result 16191 states and 21960 transitions. [2021-11-13 18:24:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:49,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 315 [2021-11-13 18:24:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:49,532 INFO L225 Difference]: With dead ends: 16191 [2021-11-13 18:24:49,532 INFO L226 Difference]: Without dead ends: 8112 [2021-11-13 18:24:49,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:49,556 INFO L933 BasicCegarLoop]: 3841 mSDtfsCounter, 3657 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:49,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3657 Valid, 3841 Invalid, 1 Unknown, 0 Unchecked, 7.59ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.49ms Time] [2021-11-13 18:24:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2021-11-13 18:24:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 8112. [2021-11-13 18:24:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 5542 states have (on average 1.2403464453265969) internal successors, (6874), 5603 states have internal predecessors, (6874), 2059 states have call successors, (2059), 511 states have call predecessors, (2059), 510 states have return successors, (2059), 2049 states have call predecessors, (2059), 2059 states have call successors, (2059) [2021-11-13 18:24:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 10992 transitions. [2021-11-13 18:24:50,281 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 10992 transitions. Word has length 315 [2021-11-13 18:24:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:50,282 INFO L470 AbstractCegarLoop]: Abstraction has 8112 states and 10992 transitions. [2021-11-13 18:24:50,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 10992 transitions. [2021-11-13 18:24:50,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-13 18:24:50,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:50,294 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:50,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:50,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-13 18:24:50,497 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:50,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:50,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1977660551, now seen corresponding path program 1 times [2021-11-13 18:24:50,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:50,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846659367] [2021-11-13 18:24:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:50,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:50,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:50,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799538715] [2021-11-13 18:24:50,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:50,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:50,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:50,700 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:50,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 18:24:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:52,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 4421 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:52,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:54,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:54,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:54,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846659367] [2021-11-13 18:24:54,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:54,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799538715] [2021-11-13 18:24:54,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799538715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:54,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:54,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:54,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655997401] [2021-11-13 18:24:54,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:54,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:54,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:54,084 INFO L87 Difference]: Start difference. First operand 8112 states and 10992 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:54,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:54,565 INFO L93 Difference]: Finished difference Result 16191 states and 21954 transitions. [2021-11-13 18:24:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:54,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 316 [2021-11-13 18:24:54,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:54,593 INFO L225 Difference]: With dead ends: 16191 [2021-11-13 18:24:54,593 INFO L226 Difference]: Without dead ends: 8112 [2021-11-13 18:24:54,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:54,615 INFO L933 BasicCegarLoop]: 3840 mSDtfsCounter, 3655 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3655 SdHoareTripleChecker+Valid, 3840 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:54,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3655 Valid, 3840 Invalid, 1 Unknown, 0 Unchecked, 7.41ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.44ms Time] [2021-11-13 18:24:54,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2021-11-13 18:24:55,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 8112. [2021-11-13 18:24:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 5542 states have (on average 1.2398051245037893) internal successors, (6871), 5603 states have internal predecessors, (6871), 2059 states have call successors, (2059), 511 states have call predecessors, (2059), 510 states have return successors, (2059), 2049 states have call predecessors, (2059), 2059 states have call successors, (2059) [2021-11-13 18:24:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 10989 transitions. [2021-11-13 18:24:55,308 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 10989 transitions. Word has length 316 [2021-11-13 18:24:55,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:55,309 INFO L470 AbstractCegarLoop]: Abstraction has 8112 states and 10989 transitions. [2021-11-13 18:24:55,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 10989 transitions. [2021-11-13 18:24:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-13 18:24:55,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:55,317 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:24:55,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:55,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-13 18:24:55,518 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:55,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:55,519 INFO L85 PathProgramCache]: Analyzing trace with hash 692489733, now seen corresponding path program 1 times [2021-11-13 18:24:55,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:55,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559098700] [2021-11-13 18:24:55,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:55,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:55,716 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:24:55,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982202848] [2021-11-13 18:24:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:55,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:55,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:55,718 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:55,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 18:24:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:57,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 4422 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:24:57,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:24:58,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:24:58,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:58,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559098700] [2021-11-13 18:24:58,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:24:58,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982202848] [2021-11-13 18:24:58,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982202848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:58,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:58,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:24:58,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334653077] [2021-11-13 18:24:58,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:58,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:58,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:58,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:58,876 INFO L87 Difference]: Start difference. First operand 8112 states and 10989 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:24:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:59,359 INFO L93 Difference]: Finished difference Result 16191 states and 21948 transitions. [2021-11-13 18:24:59,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:59,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 317 [2021-11-13 18:24:59,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:59,389 INFO L225 Difference]: With dead ends: 16191 [2021-11-13 18:24:59,389 INFO L226 Difference]: Without dead ends: 8112 [2021-11-13 18:24:59,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:59,411 INFO L933 BasicCegarLoop]: 3839 mSDtfsCounter, 3653 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3653 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:59,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3653 Valid, 3839 Invalid, 1 Unknown, 0 Unchecked, 7.13ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.40ms Time] [2021-11-13 18:24:59,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2021-11-13 18:25:00,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 8112. [2021-11-13 18:25:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 5542 states have (on average 1.2392638036809815) internal successors, (6868), 5603 states have internal predecessors, (6868), 2059 states have call successors, (2059), 511 states have call predecessors, (2059), 510 states have return successors, (2059), 2049 states have call predecessors, (2059), 2059 states have call successors, (2059) [2021-11-13 18:25:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 10986 transitions. [2021-11-13 18:25:00,218 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 10986 transitions. Word has length 317 [2021-11-13 18:25:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:00,218 INFO L470 AbstractCegarLoop]: Abstraction has 8112 states and 10986 transitions. [2021-11-13 18:25:00,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:25:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 10986 transitions. [2021-11-13 18:25:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-13 18:25:00,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:00,229 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:25:00,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:00,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 18:25:00,430 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:25:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1977286517, now seen corresponding path program 1 times [2021-11-13 18:25:00,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:25:00,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895731609] [2021-11-13 18:25:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:00,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:25:00,631 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:25:00,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069994538] [2021-11-13 18:25:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:00,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:00,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:25:00,633 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:25:00,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-13 18:25:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:02,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 4423 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:25:03,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:25:03,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:25:03,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895731609] [2021-11-13 18:25:03,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:25:03,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069994538] [2021-11-13 18:25:03,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069994538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:03,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:03,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:25:03,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874970351] [2021-11-13 18:25:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:03,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:25:03,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:25:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:25:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:03,933 INFO L87 Difference]: Start difference. First operand 8112 states and 10986 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:25:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:04,952 INFO L93 Difference]: Finished difference Result 24254 states and 32863 transitions. [2021-11-13 18:25:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:25:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 318 [2021-11-13 18:25:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:05,007 INFO L225 Difference]: With dead ends: 24254 [2021-11-13 18:25:05,007 INFO L226 Difference]: Without dead ends: 16175 [2021-11-13 18:25:05,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:05,031 INFO L933 BasicCegarLoop]: 4845 mSDtfsCounter, 3652 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3652 SdHoareTripleChecker+Valid, 8622 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.05ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:05,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3652 Valid, 8622 Invalid, 5 Unknown, 0 Unchecked, 14.05ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 7.12ms Time] [2021-11-13 18:25:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16175 states. [2021-11-13 18:25:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16175 to 16171. [2021-11-13 18:25:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16171 states, 11052 states have (on average 1.239685124864278) internal successors, (13701), 11180 states have internal predecessors, (13701), 4100 states have call successors, (4100), 1022 states have call predecessors, (4100), 1018 states have return successors, (4100), 4072 states have call predecessors, (4100), 4100 states have call successors, (4100) [2021-11-13 18:25:06,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16171 states to 16171 states and 21901 transitions. [2021-11-13 18:25:06,157 INFO L78 Accepts]: Start accepts. Automaton has 16171 states and 21901 transitions. Word has length 318 [2021-11-13 18:25:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:06,158 INFO L470 AbstractCegarLoop]: Abstraction has 16171 states and 21901 transitions. [2021-11-13 18:25:06,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 18:25:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 16171 states and 21901 transitions. [2021-11-13 18:25:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-13 18:25:06,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:06,166 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2021-11-13 18:25:06,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:06,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:06,367 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:25:06,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:06,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2005915668, now seen corresponding path program 1 times [2021-11-13 18:25:06,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:25:06,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372097073] [2021-11-13 18:25:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:06,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:25:06,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:25:06,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145163667] [2021-11-13 18:25:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:06,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:06,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:25:06,569 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:25:06,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 18:25:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:08,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 4422 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:08,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2021-11-13 18:25:09,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:25:09,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:25:09,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372097073] [2021-11-13 18:25:09,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:25:09,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145163667] [2021-11-13 18:25:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145163667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:09,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:09,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:25:09,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386352588] [2021-11-13 18:25:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:09,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:25:09,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:25:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:25:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:09,424 INFO L87 Difference]: Start difference. First operand 16171 states and 21901 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-13 18:25:11,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:25:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:13,031 INFO L93 Difference]: Finished difference Result 37282 states and 50469 transitions. [2021-11-13 18:25:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:25:13,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 318 [2021-11-13 18:25:13,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:13,138 INFO L225 Difference]: With dead ends: 37282 [2021-11-13 18:25:13,138 INFO L226 Difference]: Without dead ends: 21144 [2021-11-13 18:25:13,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:13,188 INFO L933 BasicCegarLoop]: 5323 mSDtfsCounter, 2664 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2196.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 9045 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.69ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2359.28ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:13,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2664 Valid, 9045 Invalid, 94 Unknown, 0 Unchecked, 14.69ms Time], IncrementalHoareTripleChecker [19 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2359.28ms Time] [2021-11-13 18:25:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21144 states. [2021-11-13 18:25:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21144 to 21138. [2021-11-13 18:25:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21138 states, 14490 states have (on average 1.2398895790200137) internal successors, (17966), 14657 states have internal predecessors, (17966), 5294 states have call successors, (5294), 1358 states have call predecessors, (5294), 1353 states have return successors, (5294), 5256 states have call predecessors, (5294), 5294 states have call successors, (5294) [2021-11-13 18:25:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21138 states to 21138 states and 28554 transitions. [2021-11-13 18:25:15,107 INFO L78 Accepts]: Start accepts. Automaton has 21138 states and 28554 transitions. Word has length 318 [2021-11-13 18:25:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:15,108 INFO L470 AbstractCegarLoop]: Abstraction has 21138 states and 28554 transitions. [2021-11-13 18:25:15,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-13 18:25:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 21138 states and 28554 transitions. [2021-11-13 18:25:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-13 18:25:15,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:15,121 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:15,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:15,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-11-13 18:25:15,323 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:25:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1082601343, now seen corresponding path program 1 times [2021-11-13 18:25:15,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:25:15,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404139075] [2021-11-13 18:25:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:15,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:25:15,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:25:15,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181273115] [2021-11-13 18:25:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:15,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:15,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:25:15,561 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:25:15,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 18:25:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:17,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 4616 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:17,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-13 18:25:18,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:25:18,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:25:18,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404139075] [2021-11-13 18:25:18,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:25:18,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181273115] [2021-11-13 18:25:18,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181273115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:18,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:18,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:25:18,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821828526] [2021-11-13 18:25:18,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:18,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:25:18,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:25:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:25:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:18,884 INFO L87 Difference]: Start difference. First operand 21138 states and 28554 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-13 18:25:20,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:25:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:23,096 INFO L93 Difference]: Finished difference Result 49096 states and 66276 transitions. [2021-11-13 18:25:23,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:25:23,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 370 [2021-11-13 18:25:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:23,211 INFO L225 Difference]: With dead ends: 49096 [2021-11-13 18:25:23,211 INFO L226 Difference]: Without dead ends: 27991 [2021-11-13 18:25:23,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:23,263 INFO L933 BasicCegarLoop]: 4717 mSDtfsCounter, 3351 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2187.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3351 SdHoareTripleChecker+Valid, 8049 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.38ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2369.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:23,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3351 Valid, 8049 Invalid, 95 Unknown, 0 Unchecked, 14.38ms Time], IncrementalHoareTripleChecker [31 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 2369.83ms Time] [2021-11-13 18:25:23,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27991 states. [2021-11-13 18:25:25,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27991 to 27985. [2021-11-13 18:25:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27985 states, 19266 states have (on average 1.241150212810132) internal successors, (23912), 19482 states have internal predecessors, (23912), 6910 states have call successors, (6910), 1814 states have call predecessors, (6910), 1808 states have return successors, (6910), 6860 states have call predecessors, (6910), 6910 states have call successors, (6910) [2021-11-13 18:25:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27985 states to 27985 states and 37732 transitions. [2021-11-13 18:25:25,808 INFO L78 Accepts]: Start accepts. Automaton has 27985 states and 37732 transitions. Word has length 370 [2021-11-13 18:25:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:25,808 INFO L470 AbstractCegarLoop]: Abstraction has 27985 states and 37732 transitions. [2021-11-13 18:25:25,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-13 18:25:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 27985 states and 37732 transitions. [2021-11-13 18:25:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-13 18:25:25,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:25,819 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:25:25,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:26,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-13 18:25:26,020 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:25:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:26,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1841468737, now seen corresponding path program 1 times [2021-11-13 18:25:26,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:25:26,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816295205] [2021-11-13 18:25:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:26,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:25:26,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:25:26,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388981061] [2021-11-13 18:25:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:26,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:26,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:25:26,213 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:25:26,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 18:25:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:28,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 4687 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:28,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2021-11-13 18:25:29,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:25:29,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:25:29,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816295205] [2021-11-13 18:25:29,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:25:29,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388981061] [2021-11-13 18:25:29,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388981061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:29,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:29,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:25:29,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897725952] [2021-11-13 18:25:29,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:29,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:25:29,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:25:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:25:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:29,498 INFO L87 Difference]: Start difference. First operand 27985 states and 37732 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-13 18:25:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:32,637 INFO L93 Difference]: Finished difference Result 60888 states and 82107 transitions. [2021-11-13 18:25:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:25:32,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 402 [2021-11-13 18:25:32,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:32,806 INFO L225 Difference]: With dead ends: 60888 [2021-11-13 18:25:32,806 INFO L226 Difference]: Without dead ends: 32936 [2021-11-13 18:25:32,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:32,909 INFO L933 BasicCegarLoop]: 5210 mSDtfsCounter, 3708 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3708 SdHoareTripleChecker+Valid, 7879 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.00ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 231.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:32,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3708 Valid, 7879 Invalid, 94 Unknown, 0 Unchecked, 15.00ms Time], IncrementalHoareTripleChecker [35 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 231.25ms Time] [2021-11-13 18:25:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32936 states. [2021-11-13 18:25:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32936 to 32930. [2021-11-13 18:25:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32930 states, 22692 states have (on average 1.2420676890534108) internal successors, (28185), 22947 states have internal predecessors, (28185), 8098 states have call successors, (8098), 2146 states have call predecessors, (8098), 2139 states have return successors, (8098), 8038 states have call predecessors, (8098), 8098 states have call successors, (8098) [2021-11-13 18:25:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32930 states to 32930 states and 44381 transitions. [2021-11-13 18:25:35,907 INFO L78 Accepts]: Start accepts. Automaton has 32930 states and 44381 transitions. Word has length 402 [2021-11-13 18:25:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:35,907 INFO L470 AbstractCegarLoop]: Abstraction has 32930 states and 44381 transitions. [2021-11-13 18:25:35,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-13 18:25:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 32930 states and 44381 transitions. [2021-11-13 18:25:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-11-13 18:25:35,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:35,919 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 14, 14, 14, 14, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:35,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:36,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:36,120 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:25:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash -252109699, now seen corresponding path program 1 times [2021-11-13 18:25:36,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:25:36,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867312810] [2021-11-13 18:25:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:36,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:25:36,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:25:36,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775258584] [2021-11-13 18:25:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:36,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:36,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:25:36,319 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:25:36,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-13 18:25:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:38,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 4706 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:38,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-11-13 18:25:39,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:25:39,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:25:39,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867312810] [2021-11-13 18:25:39,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:25:39,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775258584] [2021-11-13 18:25:39,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775258584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:39,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:39,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:25:39,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463317751] [2021-11-13 18:25:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:39,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:25:39,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:25:39,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:25:39,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:39,643 INFO L87 Difference]: Start difference. First operand 32930 states and 44381 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-13 18:25:41,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:25:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:44,961 INFO L93 Difference]: Finished difference Result 71036 states and 95673 transitions. [2021-11-13 18:25:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:25:44,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 424 [2021-11-13 18:25:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:45,099 INFO L225 Difference]: With dead ends: 71036 [2021-11-13 18:25:45,099 INFO L226 Difference]: Without dead ends: 38139 [2021-11-13 18:25:45,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:45,315 INFO L933 BasicCegarLoop]: 4801 mSDtfsCounter, 3316 mSDsluCounter, 3358 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2195.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 8159 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.80ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2316.53ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:45,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3316 Valid, 8159 Invalid, 85 Unknown, 0 Unchecked, 15.80ms Time], IncrementalHoareTripleChecker [20 Valid, 64 Invalid, 1 Unknown, 0 Unchecked, 2316.53ms Time] [2021-11-13 18:25:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38139 states. [2021-11-13 18:25:48,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38139 to 38133. [2021-11-13 18:25:48,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38133 states, 26316 states have (on average 1.2422100623195014) internal successors, (32690), 26610 states have internal predecessors, (32690), 9318 states have call successors, (9318), 2506 states have call predecessors, (9318), 2498 states have return successors, (9318), 9248 states have call predecessors, (9318), 9318 states have call successors, (9318) [2021-11-13 18:25:48,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38133 states to 38133 states and 51326 transitions. [2021-11-13 18:25:48,574 INFO L78 Accepts]: Start accepts. Automaton has 38133 states and 51326 transitions. Word has length 424 [2021-11-13 18:25:48,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:48,575 INFO L470 AbstractCegarLoop]: Abstraction has 38133 states and 51326 transitions. [2021-11-13 18:25:48,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-13 18:25:48,575 INFO L276 IsEmpty]: Start isEmpty. Operand 38133 states and 51326 transitions. [2021-11-13 18:25:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-13 18:25:48,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:48,586 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 14, 14, 14, 14, 9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:48,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-13 18:25:48,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-13 18:25:48,787 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:25:48,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash -203877475, now seen corresponding path program 1 times [2021-11-13 18:25:48,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:25:48,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72093236] [2021-11-13 18:25:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:48,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:25:48,995 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:25:48,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092678476] [2021-11-13 18:25:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:48,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:48,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:25:48,997 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:25:49,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca977055-39fd-42aa-91c5-d0f264c12b8b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 18:25:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:51,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 4719 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:25:51,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-11-13 18:25:52,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:25:52,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:25:52,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72093236] [2021-11-13 18:25:52,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:25:52,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092678476] [2021-11-13 18:25:52,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092678476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:25:52,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:25:52,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:25:52,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186166646] [2021-11-13 18:25:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:25:52,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:25:52,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:25:52,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:25:52,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:52,212 INFO L87 Difference]: Start difference. First operand 38133 states and 51326 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-13 18:25:56,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:56,153 INFO L93 Difference]: Finished difference Result 81190 states and 109247 transitions. [2021-11-13 18:25:56,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:25:56,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 433 [2021-11-13 18:25:56,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:56,367 INFO L225 Difference]: With dead ends: 81190 [2021-11-13 18:25:56,367 INFO L226 Difference]: Without dead ends: 43090 [2021-11-13 18:25:56,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:25:56,453 INFO L933 BasicCegarLoop]: 6264 mSDtfsCounter, 3358 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 248.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 9571 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.68ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 286.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:56,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3358 Valid, 9571 Invalid, 92 Unknown, 0 Unchecked, 17.68ms Time], IncrementalHoareTripleChecker [26 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 286.43ms Time] [2021-11-13 18:25:56,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43090 states.