./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa --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 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:47:00,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:47:00,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:47:00,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:47:00,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:47:00,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:47:00,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:47:00,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:47:00,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:47:00,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:47:00,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:47:00,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:47:00,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:47:00,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:47:00,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:47:00,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:47:00,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:47:00,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:47:00,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:47:00,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:47:00,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:47:00,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:47:00,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:47:00,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:47:00,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:47:00,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:47:00,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:47:00,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:47:00,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:47:00,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:47:00,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:47:00,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:47:00,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:47:00,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:47:00,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:47:00,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:47:00,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:47:00,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:47:00,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:47:00,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:47:00,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:47:00,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 19:47:00,253 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:47:00,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:47:00,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:47:00,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:47:00,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:47:00,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:47:00,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:47:00,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:47:00,256 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:47:00,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:47:00,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:47:00,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:47:00,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:47:00,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:47:00,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:47:00,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:47:00,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:47:00,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:47:00,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:47:00,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:47:00,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:47:00,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:47:00,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:47:00,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:47:00,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:47:00,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:47:00,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:47:00,260 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:47:00,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:47:00,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:47:00,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:47:00,261 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_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 [2021-12-06 19:47:00,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:47:00,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:47:00,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:47:00,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:47:00,472 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:47:00,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-12-06 19:47:00,518 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/data/70c8da75a/9f546475c5f04b13987f4bdc57f43841/FLAG2a9531308 [2021-12-06 19:47:01,162 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:47:01,162 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-12-06 19:47:01,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/data/70c8da75a/9f546475c5f04b13987f4bdc57f43841/FLAG2a9531308 [2021-12-06 19:47:01,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/data/70c8da75a/9f546475c5f04b13987f4bdc57f43841 [2021-12-06 19:47:01,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:47:01,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:47:01,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:47:01,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:47:01,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:47:01,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:47:01" (1/1) ... [2021-12-06 19:47:01,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525df3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:01, skipping insertion in model container [2021-12-06 19:47:01,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:47:01" (1/1) ... [2021-12-06 19:47:01,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:47:01,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:47:04,262 WARN L230 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_4fe14884-589d-4765-9847-ad4279157f1d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2021-12-06 19:47:04,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:47:04,377 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:47:04,725 WARN L230 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_4fe14884-589d-4765-9847-ad4279157f1d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2021-12-06 19:47:04,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:47:04,891 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:47:04,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04 WrapperNode [2021-12-06 19:47:04,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:47:04,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:47:04,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:47:04,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:47:04,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:04,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:05,149 INFO L137 Inliner]: procedures = 440, calls = 4514, calls flagged for inlining = 181, calls inlined = 178, statements flattened = 8251 [2021-12-06 19:47:05,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:47:05,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:47:05,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:47:05,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:47:05,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:05,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:05,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:05,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:05,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:05,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:05,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:05,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:47:05,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:47:05,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:47:05,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:47:05,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (1/1) ... [2021-12-06 19:47:05,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:47:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:47:05,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:47:05,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:47:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2021-12-06 19:47:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2021-12-06 19:47:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-12-06 19:47:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-12-06 19:47:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2021-12-06 19:47:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2021-12-06 19:47:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2021-12-06 19:47:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2021-12-06 19:47:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-06 19:47:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-06 19:47:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 19:47:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 19:47:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-06 19:47:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-06 19:47:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 19:47:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 19:47:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2021-12-06 19:47:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2021-12-06 19:47:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2021-12-06 19:47:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2021-12-06 19:47:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2021-12-06 19:47:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2021-12-06 19:47:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-12-06 19:47:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-12-06 19:47:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2021-12-06 19:47:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2021-12-06 19:47:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-12-06 19:47:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-12-06 19:47:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-06 19:47:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-06 19:47:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-12-06 19:47:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-12-06 19:47:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-06 19:47:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-06 19:47:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 19:47:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 19:47:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2021-12-06 19:47:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2021-12-06 19:47:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2021-12-06 19:47:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2021-12-06 19:47:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2021-12-06 19:47:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2021-12-06 19:47:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2021-12-06 19:47:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2021-12-06 19:47:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2021-12-06 19:47:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2021-12-06 19:47:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2021-12-06 19:47:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2021-12-06 19:47:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 19:47:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 19:47:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-06 19:47:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-06 19:47:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:47:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2021-12-06 19:47:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2021-12-06 19:47:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2021-12-06 19:47:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2021-12-06 19:47:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-06 19:47:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-06 19:47:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2021-12-06 19:47:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2021-12-06 19:47:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 19:47:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2021-12-06 19:47:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2021-12-06 19:47:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-06 19:47:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-06 19:47:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 19:47:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 19:47:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2021-12-06 19:47:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2021-12-06 19:47:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 19:47:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2021-12-06 19:47:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2021-12-06 19:47:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2021-12-06 19:47:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2021-12-06 19:47:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:47:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_10 [2021-12-06 19:47:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_10 [2021-12-06 19:47:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-06 19:47:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-06 19:47:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2021-12-06 19:47:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2021-12-06 19:47:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 19:47:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 19:47:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-12-06 19:47:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-12-06 19:47:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-06 19:47:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-06 19:47:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-12-06 19:47:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-12-06 19:47:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2021-12-06 19:47:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2021-12-06 19:47:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2021-12-06 19:47:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2021-12-06 19:47:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-06 19:47:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-06 19:47:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-06 19:47:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-06 19:47:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2021-12-06 19:47:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2021-12-06 19:47:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2021-12-06 19:47:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2021-12-06 19:47:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2021-12-06 19:47:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2021-12-06 19:47:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 19:47:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 19:47:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-12-06 19:47:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-12-06 19:47:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:47:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:47:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-06 19:47:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-06 19:47:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-12-06 19:47:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-12-06 19:47:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2021-12-06 19:47:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2021-12-06 19:47:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-06 19:47:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-06 19:47:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:47:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 19:47:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 19:47:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_10 [2021-12-06 19:47:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_10 [2021-12-06 19:47:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2021-12-06 19:47:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2021-12-06 19:47:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2021-12-06 19:47:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2021-12-06 19:47:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2021-12-06 19:47:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2021-12-06 19:47:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_resume [2021-12-06 19:47:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_resume [2021-12-06 19:47:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2021-12-06 19:47:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2021-12-06 19:47:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2021-12-06 19:47:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2021-12-06 19:47:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2021-12-06 19:47:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2021-12-06 19:47:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2021-12-06 19:47:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2021-12-06 19:47:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2021-12-06 19:47:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2021-12-06 19:47:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-12-06 19:47:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-12-06 19:47:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:47:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:47:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-06 19:47:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-06 19:47:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2021-12-06 19:47:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2021-12-06 19:47:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 19:47:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 19:47:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2021-12-06 19:47:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2021-12-06 19:47:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 19:47:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 19:47:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-12-06 19:47:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-12-06 19:47:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-12-06 19:47:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-12-06 19:47:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2021-12-06 19:47:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2021-12-06 19:47:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2021-12-06 19:47:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2021-12-06 19:47:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_9 [2021-12-06 19:47:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_9 [2021-12-06 19:47:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2021-12-06 19:47:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2021-12-06 19:47:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2021-12-06 19:47:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2021-12-06 19:47:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2021-12-06 19:47:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2021-12-06 19:47:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2021-12-06 19:47:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2021-12-06 19:47:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2021-12-06 19:47:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2021-12-06 19:47:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2021-12-06 19:47:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2021-12-06 19:47:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2021-12-06 19:47:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2021-12-06 19:47:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 19:47:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 19:47:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-06 19:47:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-06 19:47:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-06 19:47:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-06 19:47:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2021-12-06 19:47:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2021-12-06 19:47:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 19:47:05,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 19:47:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-12-06 19:47:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-12-06 19:47:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 19:47:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 19:47:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2021-12-06 19:47:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2021-12-06 19:47:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2021-12-06 19:47:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2021-12-06 19:47:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:47:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2021-12-06 19:47:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2021-12-06 19:47:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:47:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2021-12-06 19:47:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2021-12-06 19:47:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-06 19:47:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-06 19:47:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:47:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2021-12-06 19:47:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2021-12-06 19:47:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-12-06 19:47:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-12-06 19:47:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-06 19:47:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-06 19:47:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure _ieee80211_hw_set [2021-12-06 19:47:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure _ieee80211_hw_set [2021-12-06 19:47:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2021-12-06 19:47:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2021-12-06 19:47:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2021-12-06 19:47:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2021-12-06 19:47:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2021-12-06 19:47:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2021-12-06 19:47:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_beacon_work [2021-12-06 19:47:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_beacon_work [2021-12-06 19:47:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2021-12-06 19:47:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2021-12-06 19:47:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-12-06 19:47:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-12-06 19:47:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2021-12-06 19:47:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2021-12-06 19:47:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2021-12-06 19:47:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2021-12-06 19:47:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2021-12-06 19:47:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2021-12-06 19:47:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:47:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2021-12-06 19:47:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2021-12-06 19:47:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-12-06 19:47:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-12-06 19:47:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 19:47:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 19:47:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2021-12-06 19:47:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2021-12-06 19:47:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2021-12-06 19:47:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2021-12-06 19:47:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2021-12-06 19:47:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2021-12-06 19:47:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-06 19:47:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-06 19:47:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-06 19:47:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-06 19:47:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-12-06 19:47:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-12-06 19:47:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2021-12-06 19:47:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2021-12-06 19:47:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-12-06 19:47:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-12-06 19:47:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2021-12-06 19:47:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2021-12-06 19:47:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-06 19:47:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-06 19:47:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-06 19:47:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-06 19:47:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2021-12-06 19:47:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2021-12-06 19:47:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2021-12-06 19:47:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2021-12-06 19:47:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:47:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2021-12-06 19:47:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2021-12-06 19:47:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2021-12-06 19:47:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2021-12-06 19:47:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2021-12-06 19:47:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2021-12-06 19:47:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2021-12-06 19:47:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2021-12-06 19:47:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-12-06 19:47:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-12-06 19:47:06,201 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:47:06,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:47:06,540 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 19:47:11,800 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:47:11,822 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:47:11,822 INFO L301 CfgBuilder]: Removed 78 assume(true) statements. [2021-12-06 19:47:11,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:47:11 BoogieIcfgContainer [2021-12-06 19:47:11,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:47:11,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:47:11,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:47:11,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:47:11,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:47:01" (1/3) ... [2021-12-06 19:47:11,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d07c21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:47:11, skipping insertion in model container [2021-12-06 19:47:11,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:47:04" (2/3) ... [2021-12-06 19:47:11,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d07c21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:47:11, skipping insertion in model container [2021-12-06 19:47:11,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:47:11" (3/3) ... [2021-12-06 19:47:11,832 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-12-06 19:47:11,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:47:11,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:47:11,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:47:11,893 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:47:11,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:47:11,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 3746 states, 2156 states have (on average 1.312152133580705) internal successors, (2829), 2311 states have internal predecessors, (2829), 1537 states have call successors, (1537), 130 states have call predecessors, (1537), 129 states have return successors, (1522), 1485 states have call predecessors, (1522), 1522 states have call successors, (1522) [2021-12-06 19:47:11,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-12-06 19:47:11,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:47:11,977 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:47:11,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:47:11,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:47:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1156017786, now seen corresponding path program 1 times [2021-12-06 19:47:11,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:47:11,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732350816] [2021-12-06 19:47:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:11,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:47:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:47:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:47:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 19:47:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 19:47:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:47:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 19:47:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 19:47:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 19:47:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:12,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:47:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 19:47:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 19:47:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 19:47:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 19:47:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-06 19:47:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 19:47:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 19:47:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-06 19:47:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-06 19:47:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2021-12-06 19:47:13,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:47:13,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732350816] [2021-12-06 19:47:13,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732350816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:47:13,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:47:13,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:47:13,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441584786] [2021-12-06 19:47:13,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:47:13,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:47:13,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:47:13,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:47:13,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:47:13,315 INFO L87 Difference]: Start difference. First operand has 3746 states, 2156 states have (on average 1.312152133580705) internal successors, (2829), 2311 states have internal predecessors, (2829), 1537 states have call successors, (1537), 130 states have call predecessors, (1537), 129 states have return successors, (1522), 1485 states have call predecessors, (1522), 1522 states have call successors, (1522) Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:47:17,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:18,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:20,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:25,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:47:29,923 INFO L93 Difference]: Finished difference Result 7459 states and 11796 transitions. [2021-12-06 19:47:29,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:47:29,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 279 [2021-12-06 19:47:29,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:47:29,962 INFO L225 Difference]: With dead ends: 7459 [2021-12-06 19:47:29,963 INFO L226 Difference]: Without dead ends: 3690 [2021-12-06 19:47:29,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:47:29,995 INFO L933 BasicCegarLoop]: 4323 mSDtfsCounter, 2210 mSDsluCounter, 4090 mSDsCounter, 0 mSdLazyCounter, 3781 mSolverCounterSat, 4642 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 8413 SdHoareTripleChecker+Invalid, 8426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4642 IncrementalHoareTripleChecker+Valid, 3781 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:47:29,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2221 Valid, 8413 Invalid, 8426 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4642 Valid, 3781 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2021-12-06 19:47:30,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-12-06 19:47:30,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3484. [2021-12-06 19:47:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 1911 states have (on average 1.3003663003663004) internal successors, (2485), 1980 states have internal predecessors, (2485), 1444 states have call successors, (1444), 129 states have call predecessors, (1444), 128 states have return successors, (1443), 1406 states have call predecessors, (1443), 1443 states have call successors, (1443) [2021-12-06 19:47:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 5372 transitions. [2021-12-06 19:47:30,288 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 5372 transitions. Word has length 279 [2021-12-06 19:47:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:47:30,288 INFO L470 AbstractCegarLoop]: Abstraction has 3484 states and 5372 transitions. [2021-12-06 19:47:30,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 19:47:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 5372 transitions. [2021-12-06 19:47:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-12-06 19:47:30,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:47:30,294 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:47:30,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:47:30,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:47:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:47:30,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1870882658, now seen corresponding path program 1 times [2021-12-06 19:47:30,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:47:30,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95038213] [2021-12-06 19:47:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:30,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:47:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:47:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:47:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 19:47:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 19:47:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:47:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 19:47:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 19:47:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 19:47:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:47:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 19:47:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 19:47:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:30,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 19:47:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 19:47:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-06 19:47:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 19:47:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 19:47:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-06 19:47:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-06 19:47:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2021-12-06 19:47:31,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:47:31,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95038213] [2021-12-06 19:47:31,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95038213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:47:31,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:47:31,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:47:31,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488456074] [2021-12-06 19:47:31,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:47:31,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:47:31,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:47:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:47:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:47:31,190 INFO L87 Difference]: Start difference. First operand 3484 states and 5372 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-06 19:47:34,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:36,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:45,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:48,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 19:47:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:47:55,753 INFO L93 Difference]: Finished difference Result 10159 states and 15748 transitions. [2021-12-06 19:47:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:47:55,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 279 [2021-12-06 19:47:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:47:55,797 INFO L225 Difference]: With dead ends: 10159 [2021-12-06 19:47:55,797 INFO L226 Difference]: Without dead ends: 6715 [2021-12-06 19:47:55,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:47:55,813 INFO L933 BasicCegarLoop]: 5743 mSDtfsCounter, 6022 mSDsluCounter, 8944 mSDsCounter, 0 mSdLazyCounter, 8074 mSolverCounterSat, 9723 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6402 SdHoareTripleChecker+Valid, 14687 SdHoareTripleChecker+Invalid, 17799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9723 IncrementalHoareTripleChecker+Valid, 8074 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:47:55,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6402 Valid, 14687 Invalid, 17799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9723 Valid, 8074 Invalid, 2 Unknown, 0 Unchecked, 24.0s Time] [2021-12-06 19:47:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2021-12-06 19:47:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 6354. [2021-12-06 19:47:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6354 states, 3432 states have (on average 1.2998251748251748) internal successors, (4461), 3551 states have internal predecessors, (4461), 2675 states have call successors, (2675), 244 states have call predecessors, (2675), 246 states have return successors, (2687), 2620 states have call predecessors, (2687), 2674 states have call successors, (2687) [2021-12-06 19:47:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 9823 transitions. [2021-12-06 19:47:56,259 INFO L78 Accepts]: Start accepts. Automaton has 6354 states and 9823 transitions. Word has length 279 [2021-12-06 19:47:56,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:47:56,260 INFO L470 AbstractCegarLoop]: Abstraction has 6354 states and 9823 transitions. [2021-12-06 19:47:56,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-06 19:47:56,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6354 states and 9823 transitions. [2021-12-06 19:47:56,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-12-06 19:47:56,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:47:56,273 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:47:56,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:47:56,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:47:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:47:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1883363039, now seen corresponding path program 1 times [2021-12-06 19:47:56,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:47:56,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456564586] [2021-12-06 19:47:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:56,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:47:56,402 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:47:56,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139389697] [2021-12-06 19:47:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:56,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:47:56,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:47:56,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:47:56,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:47:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:57,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 5915 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:47:57,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:47:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:47:57,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:47:57,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:47:57,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456564586] [2021-12-06 19:47:57,946 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:47:57,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139389697] [2021-12-06 19:47:57,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139389697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:47:57,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:47:57,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:47:57,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829216883] [2021-12-06 19:47:57,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:47:57,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:47:57,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:47:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:47:57,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:47:57,948 INFO L87 Difference]: Start difference. First operand 6354 states and 9823 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:47:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:47:58,555 INFO L93 Difference]: Finished difference Result 19012 states and 29411 transitions. [2021-12-06 19:47:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:47:58,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 326 [2021-12-06 19:47:58,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:47:58,640 INFO L225 Difference]: With dead ends: 19012 [2021-12-06 19:47:58,641 INFO L226 Difference]: Without dead ends: 12698 [2021-12-06 19:47:58,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:47:58,673 INFO L933 BasicCegarLoop]: 6850 mSDtfsCounter, 5304 mSDsluCounter, 18990 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 25840 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:47:58,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 25840 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:47:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12698 states. [2021-12-06 19:47:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12698 to 12683. [2021-12-06 19:47:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12683 states, 6857 states have (on average 1.3007145982207962) internal successors, (8919), 7095 states have internal predecessors, (8919), 5331 states have call successors, (5331), 489 states have call predecessors, (5331), 494 states have return successors, (5368), 5222 states have call predecessors, (5368), 5330 states have call successors, (5368) [2021-12-06 19:47:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12683 states to 12683 states and 19618 transitions. [2021-12-06 19:47:59,668 INFO L78 Accepts]: Start accepts. Automaton has 12683 states and 19618 transitions. Word has length 326 [2021-12-06 19:47:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:47:59,669 INFO L470 AbstractCegarLoop]: Abstraction has 12683 states and 19618 transitions. [2021-12-06 19:47:59,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:47:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 12683 states and 19618 transitions. [2021-12-06 19:47:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-12-06 19:47:59,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:47:59,683 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:47:59,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:47:59,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:47:59,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:47:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:47:59,886 INFO L85 PathProgramCache]: Analyzing trace with hash -278816971, now seen corresponding path program 1 times [2021-12-06 19:47:59,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:47:59,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502105990] [2021-12-06 19:47:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:59,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:48:00,251 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:48:00,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092465180] [2021-12-06 19:48:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:00,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:00,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:48:00,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:48:00,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:48:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:01,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 5913 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:48:01,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:48:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:48:01,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:48:01,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:48:01,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502105990] [2021-12-06 19:48:01,614 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:48:01,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092465180] [2021-12-06 19:48:01,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092465180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:48:01,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:48:01,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:48:01,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014324938] [2021-12-06 19:48:01,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:48:01,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:48:01,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:48:01,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:48:01,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:48:01,615 INFO L87 Difference]: Start difference. First operand 12683 states and 19618 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:48:02,427 INFO L93 Difference]: Finished difference Result 38041 states and 58870 transitions. [2021-12-06 19:48:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:48:02,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 325 [2021-12-06 19:48:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:48:02,561 INFO L225 Difference]: With dead ends: 38041 [2021-12-06 19:48:02,561 INFO L226 Difference]: Without dead ends: 25398 [2021-12-06 19:48:02,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:48:02,619 INFO L933 BasicCegarLoop]: 7213 mSDtfsCounter, 5314 mSDsluCounter, 19729 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5318 SdHoareTripleChecker+Valid, 26942 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:48:02,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5318 Valid, 26942 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:48:02,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25398 states. [2021-12-06 19:48:04,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25398 to 25323. [2021-12-06 19:48:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25323 states, 13691 states have (on average 1.3015119421517785) internal successors, (17819), 14181 states have internal predecessors, (17819), 10641 states have call successors, (10641), 979 states have call predecessors, (10641), 990 states have return successors, (10748), 10410 states have call predecessors, (10748), 10640 states have call successors, (10748) [2021-12-06 19:48:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25323 states to 25323 states and 39208 transitions. [2021-12-06 19:48:04,198 INFO L78 Accepts]: Start accepts. Automaton has 25323 states and 39208 transitions. Word has length 325 [2021-12-06 19:48:04,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:48:04,198 INFO L470 AbstractCegarLoop]: Abstraction has 25323 states and 39208 transitions. [2021-12-06 19:48:04,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 25323 states and 39208 transitions. [2021-12-06 19:48:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-12-06 19:48:04,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:48:04,209 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:48:04,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:48:04,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:04,409 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:48:04,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:48:04,410 INFO L85 PathProgramCache]: Analyzing trace with hash -36668360, now seen corresponding path program 1 times [2021-12-06 19:48:04,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:48:04,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922893963] [2021-12-06 19:48:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:04,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:48:04,577 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:48:04,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062468796] [2021-12-06 19:48:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:04,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:04,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:48:04,579 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:48:04,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:48:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:05,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 5917 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:48:05,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:48:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:48:05,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:48:05,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:48:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922893963] [2021-12-06 19:48:05,932 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:48:05,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062468796] [2021-12-06 19:48:05,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062468796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:48:05,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:48:05,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:48:05,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930772250] [2021-12-06 19:48:05,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:48:05,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:48:05,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:48:05,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:48:05,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:48:05,935 INFO L87 Difference]: Start difference. First operand 25323 states and 39208 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:48:07,610 INFO L93 Difference]: Finished difference Result 76045 states and 117800 transitions. [2021-12-06 19:48:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:48:07,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 327 [2021-12-06 19:48:07,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:48:07,851 INFO L225 Difference]: With dead ends: 76045 [2021-12-06 19:48:07,852 INFO L226 Difference]: Without dead ends: 50762 [2021-12-06 19:48:07,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:48:07,948 INFO L933 BasicCegarLoop]: 6800 mSDtfsCounter, 5303 mSDsluCounter, 18890 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5307 SdHoareTripleChecker+Valid, 25690 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:48:07,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5307 Valid, 25690 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:48:07,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50762 states. [2021-12-06 19:48:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50762 to 50635. [2021-12-06 19:48:10,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50635 states, 27391 states have (on average 1.3017049395786937) internal successors, (35655), 28367 states have internal predecessors, (35655), 21259 states have call successors, (21259), 1961 states have call predecessors, (21259), 1984 states have return successors, (21562), 20802 states have call predecessors, (21562), 21258 states have call successors, (21562) [2021-12-06 19:48:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50635 states to 50635 states and 78476 transitions. [2021-12-06 19:48:11,206 INFO L78 Accepts]: Start accepts. Automaton has 50635 states and 78476 transitions. Word has length 327 [2021-12-06 19:48:11,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:48:11,207 INFO L470 AbstractCegarLoop]: Abstraction has 50635 states and 78476 transitions. [2021-12-06 19:48:11,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:11,207 INFO L276 IsEmpty]: Start isEmpty. Operand 50635 states and 78476 transitions. [2021-12-06 19:48:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-12-06 19:48:11,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:48:11,218 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:48:11,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:48:11,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:11,419 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:48:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:48:11,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1424307076, now seen corresponding path program 1 times [2021-12-06 19:48:11,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:48:11,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193000611] [2021-12-06 19:48:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:11,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:48:11,542 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:48:11,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061440635] [2021-12-06 19:48:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:11,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:11,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:48:11,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:48:11,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:48:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:12,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 5919 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:48:12,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:48:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:48:12,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:48:12,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:48:12,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193000611] [2021-12-06 19:48:12,874 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:48:12,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061440635] [2021-12-06 19:48:12,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061440635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:48:12,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:48:12,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:48:12,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420147334] [2021-12-06 19:48:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:48:12,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:48:12,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:48:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:48:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:48:12,876 INFO L87 Difference]: Start difference. First operand 50635 states and 78476 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:48:15,758 INFO L93 Difference]: Finished difference Result 152077 states and 235864 transitions. [2021-12-06 19:48:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:48:15,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 328 [2021-12-06 19:48:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:48:16,378 INFO L225 Difference]: With dead ends: 152077 [2021-12-06 19:48:16,379 INFO L226 Difference]: Without dead ends: 101482 [2021-12-06 19:48:16,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:48:16,570 INFO L933 BasicCegarLoop]: 6800 mSDtfsCounter, 5302 mSDsluCounter, 18890 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5306 SdHoareTripleChecker+Valid, 25690 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:48:16,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5306 Valid, 25690 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:48:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101482 states. [2021-12-06 19:48:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101482 to 101213. [2021-12-06 19:48:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101213 states, 54769 states have (on average 1.3018130694370904) internal successors, (71299), 56707 states have internal predecessors, (71299), 42471 states have call successors, (42471), 3925 states have call predecessors, (42471), 3972 states have return successors, (43326), 41566 states have call predecessors, (43326), 42470 states have call successors, (43326) [2021-12-06 19:48:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101213 states to 101213 states and 157096 transitions. [2021-12-06 19:48:23,155 INFO L78 Accepts]: Start accepts. Automaton has 101213 states and 157096 transitions. Word has length 328 [2021-12-06 19:48:23,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:48:23,156 INFO L470 AbstractCegarLoop]: Abstraction has 101213 states and 157096 transitions. [2021-12-06 19:48:23,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:23,156 INFO L276 IsEmpty]: Start isEmpty. Operand 101213 states and 157096 transitions. [2021-12-06 19:48:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-12-06 19:48:23,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:48:23,164 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:48:23,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:48:23,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:23,365 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:48:23,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:48:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash -724855501, now seen corresponding path program 1 times [2021-12-06 19:48:23,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:48:23,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252728778] [2021-12-06 19:48:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:23,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:48:23,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:48:23,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036278331] [2021-12-06 19:48:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:23,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:23,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:48:23,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:48:23,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:48:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:24,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 5905 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:48:24,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:48:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:48:24,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:48:24,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:48:24,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252728778] [2021-12-06 19:48:24,833 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:48:24,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036278331] [2021-12-06 19:48:24,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036278331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:48:24,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:48:24,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:48:24,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304546118] [2021-12-06 19:48:24,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:48:24,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:48:24,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:48:24,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:48:24,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:48:24,834 INFO L87 Difference]: Start difference. First operand 101213 states and 157096 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:48:28,584 INFO L93 Difference]: Finished difference Result 202770 states and 314678 transitions. [2021-12-06 19:48:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:48:28,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 330 [2021-12-06 19:48:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:48:29,076 INFO L225 Difference]: With dead ends: 202770 [2021-12-06 19:48:29,076 INFO L226 Difference]: Without dead ends: 101597 [2021-12-06 19:48:29,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:48:29,484 INFO L933 BasicCegarLoop]: 5375 mSDtfsCounter, 5297 mSDsluCounter, 10729 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5301 SdHoareTripleChecker+Valid, 16104 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:48:29,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5301 Valid, 16104 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:48:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101597 states. [2021-12-06 19:48:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101597 to 101501. [2021-12-06 19:48:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101501 states, 55025 states have (on average 1.3015720127214903) internal successors, (71619), 56963 states have internal predecessors, (71619), 42471 states have call successors, (42471), 3957 states have call predecessors, (42471), 4004 states have return successors, (43326), 41566 states have call predecessors, (43326), 42470 states have call successors, (43326) [2021-12-06 19:48:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101501 states to 101501 states and 157416 transitions. [2021-12-06 19:48:36,356 INFO L78 Accepts]: Start accepts. Automaton has 101501 states and 157416 transitions. Word has length 330 [2021-12-06 19:48:36,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:48:36,357 INFO L470 AbstractCegarLoop]: Abstraction has 101501 states and 157416 transitions. [2021-12-06 19:48:36,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 101501 states and 157416 transitions. [2021-12-06 19:48:36,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-12-06 19:48:36,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:48:36,365 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:48:36,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:48:36,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:36,567 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:48:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:48:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -661335607, now seen corresponding path program 1 times [2021-12-06 19:48:36,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:48:36,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654723978] [2021-12-06 19:48:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:36,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:48:36,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:48:36,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560915218] [2021-12-06 19:48:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:36,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:36,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:48:36,675 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:48:36,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:48:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:37,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 5903 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:48:37,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:48:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:48:37,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:48:37,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:48:37,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654723978] [2021-12-06 19:48:37,923 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:48:37,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560915218] [2021-12-06 19:48:37,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560915218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:48:37,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:48:37,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:48:37,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989034097] [2021-12-06 19:48:37,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:48:37,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:48:37,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:48:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:48:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:48:37,924 INFO L87 Difference]: Start difference. First operand 101501 states and 157416 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:48:42,120 INFO L93 Difference]: Finished difference Result 203442 states and 315382 transitions. [2021-12-06 19:48:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:48:42,121 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), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 329 [2021-12-06 19:48:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:48:42,672 INFO L225 Difference]: With dead ends: 203442 [2021-12-06 19:48:42,672 INFO L226 Difference]: Without dead ends: 101981 [2021-12-06 19:48:43,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:48:43,022 INFO L933 BasicCegarLoop]: 5375 mSDtfsCounter, 5298 mSDsluCounter, 10729 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5302 SdHoareTripleChecker+Valid, 16104 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:48:43,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5302 Valid, 16104 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:48:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101981 states. [2021-12-06 19:48:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101981 to 101789. [2021-12-06 19:48:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101789 states, 55281 states have (on average 1.301333188618151) internal successors, (71939), 57219 states have internal predecessors, (71939), 42471 states have call successors, (42471), 3989 states have call predecessors, (42471), 4036 states have return successors, (43326), 41566 states have call predecessors, (43326), 42470 states have call successors, (43326) [2021-12-06 19:48:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101789 states to 101789 states and 157736 transitions. [2021-12-06 19:48:49,281 INFO L78 Accepts]: Start accepts. Automaton has 101789 states and 157736 transitions. Word has length 329 [2021-12-06 19:48:49,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:48:49,282 INFO L470 AbstractCegarLoop]: Abstraction has 101789 states and 157736 transitions. [2021-12-06 19:48:49,282 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), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:49,282 INFO L276 IsEmpty]: Start isEmpty. Operand 101789 states and 157736 transitions. [2021-12-06 19:48:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-12-06 19:48:49,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:48:49,290 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:48:49,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:48:49,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:49,492 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:48:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:48:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1205499930, now seen corresponding path program 1 times [2021-12-06 19:48:49,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:48:49,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532772101] [2021-12-06 19:48:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:49,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:48:49,617 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:48:49,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269202301] [2021-12-06 19:48:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:49,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:49,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:48:49,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:48:49,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:48:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:50,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 5907 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:48:50,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:48:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:48:50,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:48:50,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:48:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532772101] [2021-12-06 19:48:50,883 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:48:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269202301] [2021-12-06 19:48:50,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269202301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:48:50,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:48:50,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:48:50,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259975363] [2021-12-06 19:48:50,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:48:50,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:48:50,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:48:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:48:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:48:50,884 INFO L87 Difference]: Start difference. First operand 101789 states and 157736 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:48:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:48:55,105 INFO L93 Difference]: Finished difference Result 204114 states and 316086 transitions. [2021-12-06 19:48:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:48:55,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 331 [2021-12-06 19:48:55,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:48:55,595 INFO L225 Difference]: With dead ends: 204114 [2021-12-06 19:48:55,596 INFO L226 Difference]: Without dead ends: 102365 [2021-12-06 19:48:56,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:48:56,142 INFO L933 BasicCegarLoop]: 5375 mSDtfsCounter, 5296 mSDsluCounter, 10729 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5300 SdHoareTripleChecker+Valid, 16104 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:48:56,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5300 Valid, 16104 Invalid, 21 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:48:56,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102365 states. [2021-12-06 19:49:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102365 to 102077. [2021-12-06 19:49:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102077 states, 55537 states have (on average 1.3010965662531286) internal successors, (72259), 57475 states have internal predecessors, (72259), 42471 states have call successors, (42471), 4021 states have call predecessors, (42471), 4068 states have return successors, (43326), 41566 states have call predecessors, (43326), 42470 states have call successors, (43326) [2021-12-06 19:49:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102077 states to 102077 states and 158056 transitions. [2021-12-06 19:49:02,849 INFO L78 Accepts]: Start accepts. Automaton has 102077 states and 158056 transitions. Word has length 331 [2021-12-06 19:49:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:02,850 INFO L470 AbstractCegarLoop]: Abstraction has 102077 states and 158056 transitions. [2021-12-06 19:49:02,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:49:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 102077 states and 158056 transitions. [2021-12-06 19:49:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-12-06 19:49:02,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:02,857 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:49:02,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:49:03,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:03,059 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:03,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:03,061 INFO L85 PathProgramCache]: Analyzing trace with hash 635654646, now seen corresponding path program 1 times [2021-12-06 19:49:03,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:03,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501782350] [2021-12-06 19:49:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:03,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:03,194 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:03,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400253342] [2021-12-06 19:49:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:03,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:03,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:03,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:03,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:49:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:04,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 5901 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:49:04,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:49:04,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:49:04,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:04,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501782350] [2021-12-06 19:49:04,503 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:04,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400253342] [2021-12-06 19:49:04,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400253342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:04,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:04,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:49:04,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855680858] [2021-12-06 19:49:04,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:04,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:49:04,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:04,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:49:04,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:49:04,504 INFO L87 Difference]: Start difference. First operand 102077 states and 158056 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:49:11,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:11,850 INFO L93 Difference]: Finished difference Result 305574 states and 472657 transitions. [2021-12-06 19:49:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:49:11,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 328 [2021-12-06 19:49:11,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:12,861 INFO L225 Difference]: With dead ends: 305574 [2021-12-06 19:49:12,861 INFO L226 Difference]: Without dead ends: 203537 [2021-12-06 19:49:13,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:49:13,404 INFO L933 BasicCegarLoop]: 7467 mSDtfsCounter, 5252 mSDsluCounter, 20240 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5256 SdHoareTripleChecker+Valid, 27707 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:13,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5256 Valid, 27707 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203537 states. [2021-12-06 19:49:25,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203537 to 201774. [2021-12-06 19:49:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201774 states, 109367 states have (on average 1.3000630903288926) internal successors, (142184), 113083 states have internal predecessors, (142184), 84373 states have call successors, (84373), 7938 states have call predecessors, (84373), 8033 states have return successors, (86084), 82532 states have call predecessors, (86084), 84372 states have call successors, (86084) [2021-12-06 19:49:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201774 states to 201774 states and 312641 transitions. [2021-12-06 19:49:27,565 INFO L78 Accepts]: Start accepts. Automaton has 201774 states and 312641 transitions. Word has length 328 [2021-12-06 19:49:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:27,565 INFO L470 AbstractCegarLoop]: Abstraction has 201774 states and 312641 transitions. [2021-12-06 19:49:27,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 19:49:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 201774 states and 312641 transitions. [2021-12-06 19:49:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-06 19:49:27,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:27,579 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:49:27,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 19:49:27,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 19:49:27,781 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1085912646, now seen corresponding path program 1 times [2021-12-06 19:49:27,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:27,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346929896] [2021-12-06 19:49:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:27,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:27,923 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:27,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783734019] [2021-12-06 19:49:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:27,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:27,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:27,924 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:27,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:49:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:28,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 5986 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:49:28,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:49:29,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:49:29,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:29,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346929896] [2021-12-06 19:49:29,136 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:29,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783734019] [2021-12-06 19:49:29,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783734019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:29,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:29,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:49:29,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394442811] [2021-12-06 19:49:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:29,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:49:29,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:29,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:49:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:49:29,138 INFO L87 Difference]: Start difference. First operand 201774 states and 312641 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:49:41,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:41,757 INFO L93 Difference]: Finished difference Result 505234 states and 782767 transitions. [2021-12-06 19:49:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:49:41,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 342 [2021-12-06 19:49:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:43,663 INFO L225 Difference]: With dead ends: 505234 [2021-12-06 19:49:43,663 INFO L226 Difference]: Without dead ends: 303500 [2021-12-06 19:49:44,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:49:44,540 INFO L933 BasicCegarLoop]: 6945 mSDtfsCounter, 5390 mSDsluCounter, 33079 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5394 SdHoareTripleChecker+Valid, 40024 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:44,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5394 Valid, 40024 Invalid, 72 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:49:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303500 states. [2021-12-06 19:50:04,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303500 to 302113. [2021-12-06 19:50:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302113 states, 163623 states have (on average 1.3001167317553155) internal successors, (212729), 169199 states have internal predecessors, (212729), 126455 states have call successors, (126455), 11859 states have call predecessors, (126455), 12034 states have return successors, (129350), 123718 states have call predecessors, (129350), 126454 states have call successors, (129350) [2021-12-06 19:50:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302113 states to 302113 states and 468534 transitions. [2021-12-06 19:50:06,893 INFO L78 Accepts]: Start accepts. Automaton has 302113 states and 468534 transitions. Word has length 342 [2021-12-06 19:50:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:50:06,894 INFO L470 AbstractCegarLoop]: Abstraction has 302113 states and 468534 transitions. [2021-12-06 19:50:06,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:50:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 302113 states and 468534 transitions. [2021-12-06 19:50:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-12-06 19:50:06,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:50:06,912 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:50:06,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 19:50:07,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 19:50:07,116 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:50:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:50:07,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1341582817, now seen corresponding path program 1 times [2021-12-06 19:50:07,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:50:07,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323430824] [2021-12-06 19:50:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:07,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:50:07,249 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:50:07,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322702707] [2021-12-06 19:50:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:07,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:50:07,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:50:07,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:50:07,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:50:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:08,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 5988 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:50:08,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:50:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:50:08,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:50:08,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:50:08,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323430824] [2021-12-06 19:50:08,508 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:50:08,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322702707] [2021-12-06 19:50:08,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322702707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:50:08,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:50:08,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:50:08,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473497490] [2021-12-06 19:50:08,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:50:08,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:50:08,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:50:08,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:50:08,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:50:08,509 INFO L87 Difference]: Start difference. First operand 302113 states and 468534 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:50:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:50:26,335 INFO L93 Difference]: Finished difference Result 706476 states and 1095153 transitions. [2021-12-06 19:50:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:50:26,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 343 [2021-12-06 19:50:26,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:50:28,795 INFO L225 Difference]: With dead ends: 706476 [2021-12-06 19:50:28,795 INFO L226 Difference]: Without dead ends: 404403 [2021-12-06 19:50:30,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:50:30,215 INFO L933 BasicCegarLoop]: 7385 mSDtfsCounter, 5390 mSDsluCounter, 34839 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5394 SdHoareTripleChecker+Valid, 42224 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:50:30,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5394 Valid, 42224 Invalid, 73 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:50:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404403 states. [2021-12-06 19:50:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404403 to 402964. [2021-12-06 19:50:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402964 states, 218263 states have (on average 1.2999088255911446) internal successors, (283722), 225795 states have internal predecessors, (283722), 168569 states have call successors, (168569), 15812 states have call predecessors, (168569), 16131 states have return successors, (172712), 164904 states have call predecessors, (172712), 168568 states have call successors, (172712) [2021-12-06 19:51:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402964 states to 402964 states and 625003 transitions. [2021-12-06 19:51:00,594 INFO L78 Accepts]: Start accepts. Automaton has 402964 states and 625003 transitions. Word has length 343 [2021-12-06 19:51:00,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:51:00,595 INFO L470 AbstractCegarLoop]: Abstraction has 402964 states and 625003 transitions. [2021-12-06 19:51:00,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:51:00,595 INFO L276 IsEmpty]: Start isEmpty. Operand 402964 states and 625003 transitions. [2021-12-06 19:51:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-12-06 19:51:00,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:51:00,620 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:51:00,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 19:51:00,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 19:51:00,822 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:51:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:51:00,823 INFO L85 PathProgramCache]: Analyzing trace with hash -767702995, now seen corresponding path program 1 times [2021-12-06 19:51:00,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:51:00,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456833952] [2021-12-06 19:51:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:51:00,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:51:00,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:51:00,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303428663] [2021-12-06 19:51:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:51:00,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:51:00,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:51:00,958 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:51:00,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 19:51:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:51:01,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 5990 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:51:01,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:51:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:51:02,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:51:02,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:51:02,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456833952] [2021-12-06 19:51:02,130 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:51:02,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303428663] [2021-12-06 19:51:02,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303428663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:51:02,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:51:02,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:51:02,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253808719] [2021-12-06 19:51:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:51:02,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:51:02,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:51:02,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:51:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:51:02,132 INFO L87 Difference]: Start difference. First operand 402964 states and 625003 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:51:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:51:26,220 INFO L93 Difference]: Finished difference Result 908102 states and 1407987 transitions. [2021-12-06 19:51:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:51:26,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 344 [2021-12-06 19:51:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:51:29,383 INFO L225 Difference]: With dead ends: 908102 [2021-12-06 19:51:29,383 INFO L226 Difference]: Without dead ends: 505178 [2021-12-06 19:51:31,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:51:31,447 INFO L933 BasicCegarLoop]: 7683 mSDtfsCounter, 5390 mSDsluCounter, 36031 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5394 SdHoareTripleChecker+Valid, 43714 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:51:31,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5394 Valid, 43714 Invalid, 73 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:51:31,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505178 states. [2021-12-06 19:52:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505178 to 403116. [2021-12-06 19:52:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403116 states, 218375 states have (on average 1.2997550085861478) internal successors, (283834), 225915 states have internal predecessors, (283834), 168569 states have call successors, (168569), 15812 states have call predecessors, (168569), 16171 states have return successors, (172764), 164936 states have call predecessors, (172764), 168568 states have call successors, (172764) [2021-12-06 19:52:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403116 states to 403116 states and 625167 transitions. [2021-12-06 19:52:05,220 INFO L78 Accepts]: Start accepts. Automaton has 403116 states and 625167 transitions. Word has length 344 [2021-12-06 19:52:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:52:05,221 INFO L470 AbstractCegarLoop]: Abstraction has 403116 states and 625167 transitions. [2021-12-06 19:52:05,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:52:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 403116 states and 625167 transitions. [2021-12-06 19:52:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-12-06 19:52:05,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:52:05,240 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:52:05,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 19:52:05,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 19:52:05,441 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:52:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:52:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2052992431, now seen corresponding path program 1 times [2021-12-06 19:52:05,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:52:05,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160505595] [2021-12-06 19:52:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:52:05,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:52:05,540 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:52:05,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894594277] [2021-12-06 19:52:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:52:05,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:52:05,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:52:05,541 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:52:05,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 19:52:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:52:06,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 5994 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 19:52:06,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:52:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:52:07,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:52:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:52:07,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:52:07,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160505595] [2021-12-06 19:52:07,569 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:52:07,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894594277] [2021-12-06 19:52:07,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894594277] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:52:07,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:52:07,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2021-12-06 19:52:07,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668517027] [2021-12-06 19:52:07,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:52:07,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 19:52:07,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:52:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 19:52:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:52:07,571 INFO L87 Difference]: Start difference. First operand 403116 states and 625167 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 9 states have internal predecessors, (132), 4 states have call successors, (59), 4 states have call predecessors, (59), 5 states have return successors, (54), 4 states have call predecessors, (54), 3 states have call successors, (54) [2021-12-06 19:52:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:52:51,073 INFO L93 Difference]: Finished difference Result 1009163 states and 1564744 transitions. [2021-12-06 19:52:51,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 19:52:51,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 9 states have internal predecessors, (132), 4 states have call successors, (59), 4 states have call predecessors, (59), 5 states have return successors, (54), 4 states have call predecessors, (54), 3 states have call successors, (54) Word has length 345 [2021-12-06 19:52:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:52:54,995 INFO L225 Difference]: With dead ends: 1009163 [2021-12-06 19:52:54,995 INFO L226 Difference]: Without dead ends: 606087 [2021-12-06 19:52:56,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 680 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 19:52:56,969 INFO L933 BasicCegarLoop]: 10726 mSDtfsCounter, 15307 mSDsluCounter, 47491 mSDsCounter, 0 mSdLazyCounter, 10385 mSolverCounterSat, 5218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15321 SdHoareTripleChecker+Valid, 58217 SdHoareTripleChecker+Invalid, 15603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5218 IncrementalHoareTripleChecker+Valid, 10385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:52:56,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15321 Valid, 58217 Invalid, 15603 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5218 Valid, 10385 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2021-12-06 19:52:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606087 states. [2021-12-06 19:53:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606087 to 403180. [2021-12-06 19:53:31,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403180 states, 218391 states have (on average 1.2997330476072733) internal successors, (283850), 225995 states have internal predecessors, (283850), 168569 states have call successors, (168569), 15812 states have call predecessors, (168569), 16219 states have return successors, (172876), 164920 states have call predecessors, (172876), 168568 states have call successors, (172876) [2021-12-06 19:53:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403180 states to 403180 states and 625295 transitions. [2021-12-06 19:53:34,795 INFO L78 Accepts]: Start accepts. Automaton has 403180 states and 625295 transitions. Word has length 345 [2021-12-06 19:53:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:34,796 INFO L470 AbstractCegarLoop]: Abstraction has 403180 states and 625295 transitions. [2021-12-06 19:53:34,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 9 states have internal predecessors, (132), 4 states have call successors, (59), 4 states have call predecessors, (59), 5 states have return successors, (54), 4 states have call predecessors, (54), 3 states have call successors, (54) [2021-12-06 19:53:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 403180 states and 625295 transitions. [2021-12-06 19:53:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-12-06 19:53:34,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:34,819 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 19:53:34,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-06 19:53:35,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 19:53:35,021 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:53:35,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1640469850, now seen corresponding path program 1 times [2021-12-06 19:53:35,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:35,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747917258] [2021-12-06 19:53:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:35,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:35,178 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:53:35,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697913911] [2021-12-06 19:53:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:35,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:53:35,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:53:35,179 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:53:35,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe14884-589d-4765-9847-ad4279157f1d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 19:53:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:36,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 5992 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:53:36,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:53:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-12-06 19:53:36,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:53:36,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:36,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747917258] [2021-12-06 19:53:36,381 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:53:36,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697913911] [2021-12-06 19:53:36,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697913911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:53:36,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:53:36,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:53:36,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065267147] [2021-12-06 19:53:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:53:36,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:53:36,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:53:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:53:36,383 INFO L87 Difference]: Start difference. First operand 403180 states and 625295 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27)