./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-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_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/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_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/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_1d8b351f-806d-4e74-be5d-d6ffda48c50a/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 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:08:26,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:08:26,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:08:26,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:08:26,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:08:26,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:08:26,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:08:26,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:08:26,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:08:26,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:08:26,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:08:26,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:08:26,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:08:26,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:08:26,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:08:26,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:08:26,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:08:26,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:08:26,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:08:26,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:08:26,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:08:26,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:08:26,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:08:26,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:08:26,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:08:26,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:08:26,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:08:26,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:08:26,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:08:26,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:08:26,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:08:26,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:08:26,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:08:26,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:08:26,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:08:26,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:08:26,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:08:26,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:08:26,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:08:26,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:08:26,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:08:26,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 18:08:26,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:08:26,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:08:26,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:08:26,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:08:26,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:08:26,894 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:08:26,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:08:26,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:08:26,895 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:08:26,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:08:26,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:08:26,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:08:26,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:08:26,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:08:26,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:08:26,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:08:26,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:08:26,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:08:26,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:08:26,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:08:26,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:08:26,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:08:26,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:08:26,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:08:26,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:08:26,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:08:26,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:08:26,897 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:08:26,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:08:26,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:08:26,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:08:26,897 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_1d8b351f-806d-4e74-be5d-d6ffda48c50a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 [2021-12-06 18:08:27,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:08:27,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:08:27,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:08:27,098 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:08:27,098 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:08:27,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-12-06 18:08:27,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/data/bb87894cd/c12c0f04036e4979bec620337fdce9d6/FLAG15c47158a [2021-12-06 18:08:27,862 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:08:27,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-12-06 18:08:27,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/data/bb87894cd/c12c0f04036e4979bec620337fdce9d6/FLAG15c47158a [2021-12-06 18:08:28,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/data/bb87894cd/c12c0f04036e4979bec620337fdce9d6 [2021-12-06 18:08:28,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:08:28,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:08:28,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:08:28,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:08:28,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:08:28,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:08:28" (1/1) ... [2021-12-06 18:08:28,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e9daf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:28, skipping insertion in model container [2021-12-06 18:08:28,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:08:28" (1/1) ... [2021-12-06 18:08:28,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:08:28,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:08:29,343 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_1d8b351f-806d-4e74-be5d-d6ffda48c50a/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-12-06 18:08:30,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:08:30,658 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:08:30,759 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_1d8b351f-806d-4e74-be5d-d6ffda48c50a/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-12-06 18:08:30,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:08:31,055 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:08:31,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31 WrapperNode [2021-12-06 18:08:31,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:08:31,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:08:31,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:08:31,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:08:31,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,320 INFO L137 Inliner]: procedures = 382, calls = 4296, calls flagged for inlining = 180, calls inlined = 177, statements flattened = 8043 [2021-12-06 18:08:31,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:08:31,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:08:31,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:08:31,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:08:31,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:08:31,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:08:31,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:08:31,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:08:31,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (1/1) ... [2021-12-06 18:08:31,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:08:31,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:08:31,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:08:31,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:08:31,769 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2021-12-06 18:08:31,770 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2021-12-06 18:08:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2021-12-06 18:08:31,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2021-12-06 18:08:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-12-06 18:08:31,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-12-06 18:08:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-06 18:08:31,770 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-06 18:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2021-12-06 18:08:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2021-12-06 18:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2021-12-06 18:08:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2021-12-06 18:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2021-12-06 18:08:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2021-12-06 18:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 18:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 18:08:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2021-12-06 18:08:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2021-12-06 18:08:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-06 18:08:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-06 18:08:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 18:08:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 18:08:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-12-06 18:08:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-12-06 18:08:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-12-06 18:08:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-12-06 18:08:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2021-12-06 18:08:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2021-12-06 18:08:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2021-12-06 18:08:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2021-12-06 18:08:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2021-12-06 18:08:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2021-12-06 18:08:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 18:08:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 18:08:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2021-12-06 18:08:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2021-12-06 18:08:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2021-12-06 18:08:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2021-12-06 18:08:31,774 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2021-12-06 18:08:31,774 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2021-12-06 18:08:31,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2021-12-06 18:08:31,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2021-12-06 18:08:31,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2021-12-06 18:08:31,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2021-12-06 18:08:31,775 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2021-12-06 18:08:31,775 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2021-12-06 18:08:31,775 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2021-12-06 18:08:31,775 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2021-12-06 18:08:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2021-12-06 18:08:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2021-12-06 18:08:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2021-12-06 18:08:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2021-12-06 18:08:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-06 18:08:31,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-06 18:08:31,776 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2021-12-06 18:08:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2021-12-06 18:08:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-12-06 18:08:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-12-06 18:08:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2021-12-06 18:08:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2021-12-06 18:08:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 18:08:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 18:08:31,777 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-06 18:08:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-06 18:08:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-06 18:08:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-06 18:08:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2021-12-06 18:08:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2021-12-06 18:08:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 18:08:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 18:08:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-12-06 18:08:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-12-06 18:08:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 18:08:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 18:08:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-12-06 18:08:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-12-06 18:08:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2021-12-06 18:08:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2021-12-06 18:08:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-06 18:08:31,779 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-06 18:08:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-06 18:08:31,792 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-06 18:08:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 18:08:31,792 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 18:08:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2021-12-06 18:08:31,792 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2021-12-06 18:08:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2021-12-06 18:08:31,792 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2021-12-06 18:08:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:08:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2021-12-06 18:08:31,793 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2021-12-06 18:08:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2021-12-06 18:08:31,793 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2021-12-06 18:08:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2021-12-06 18:08:31,793 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2021-12-06 18:08:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:08:31,793 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2021-12-06 18:08:31,794 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2021-12-06 18:08:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-06 18:08:31,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-06 18:08:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2021-12-06 18:08:31,794 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2021-12-06 18:08:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2021-12-06 18:08:31,794 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2021-12-06 18:08:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-06 18:08:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2021-12-06 18:08:31,794 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2021-12-06 18:08:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 18:08:31,795 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 18:08:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-06 18:08:31,795 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-06 18:08:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:08:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:08:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2021-12-06 18:08:31,795 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2021-12-06 18:08:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2021-12-06 18:08:31,795 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2021-12-06 18:08:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2021-12-06 18:08:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2021-12-06 18:08:31,796 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 18:08:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 18:08:31,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_14 [2021-12-06 18:08:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_14 [2021-12-06 18:08:31,796 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-06 18:08:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-06 18:08:31,796 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2021-12-06 18:08:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2021-12-06 18:08:31,797 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2021-12-06 18:08:31,797 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2021-12-06 18:08:31,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 18:08:31,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 18:08:31,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 18:08:31,797 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2021-12-06 18:08:31,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2021-12-06 18:08:31,797 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-06 18:08:31,797 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-06 18:08:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 18:08:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 18:08:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2021-12-06 18:08:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2021-12-06 18:08:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 18:08:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2021-12-06 18:08:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2021-12-06 18:08:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2021-12-06 18:08:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2021-12-06 18:08:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2021-12-06 18:08:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2021-12-06 18:08:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:08:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-06 18:08:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-06 18:08:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2021-12-06 18:08:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2021-12-06 18:08:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2021-12-06 18:08:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2021-12-06 18:08:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 18:08:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 18:08:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-12-06 18:08:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-12-06 18:08:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-06 18:08:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-06 18:08:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2021-12-06 18:08:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2021-12-06 18:08:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2021-12-06 18:08:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2021-12-06 18:08:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-12-06 18:08:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-12-06 18:08:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-12-06 18:08:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-12-06 18:08:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2021-12-06 18:08:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2021-12-06 18:08:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2021-12-06 18:08:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2021-12-06 18:08:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2021-12-06 18:08:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2021-12-06 18:08:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-06 18:08:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-06 18:08:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:08:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-06 18:08:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-06 18:08:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2021-12-06 18:08:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2021-12-06 18:08:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2021-12-06 18:08:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2021-12-06 18:08:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2021-12-06 18:08:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2021-12-06 18:08:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 18:08:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 18:08:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2021-12-06 18:08:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2021-12-06 18:08:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-12-06 18:08:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2021-12-06 18:08:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2021-12-06 18:08:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2021-12-06 18:08:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2021-12-06 18:08:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2021-12-06 18:08:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2021-12-06 18:08:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:08:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:08:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-06 18:08:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-06 18:08:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-12-06 18:08:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-12-06 18:08:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2021-12-06 18:08:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2021-12-06 18:08:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-06 18:08:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-06 18:08:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:08:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-06 18:08:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-06 18:08:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_RXCB [2021-12-06 18:08:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_RXCB [2021-12-06 18:08:31,803 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 18:08:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 18:08:31,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-12-06 18:08:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-12-06 18:08:31,803 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2021-12-06 18:08:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2021-12-06 18:08:31,803 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2021-12-06 18:08:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2021-12-06 18:08:31,803 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-12-06 18:08:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-12-06 18:08:31,803 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2021-12-06 18:08:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2021-12-06 18:08:31,803 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2021-12-06 18:08:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2021-12-06 18:08:31,803 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2021-12-06 18:08:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2021-12-06 18:08:31,803 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-06 18:08:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-06 18:08:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-06 18:08:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-06 18:08:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 18:08:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 18:08:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2021-12-06 18:08:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2021-12-06 18:08:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2021-12-06 18:08:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2021-12-06 18:08:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2021-12-06 18:08:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2021-12-06 18:08:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2021-12-06 18:08:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2021-12-06 18:08:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2021-12-06 18:08:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2021-12-06 18:08:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2021-12-06 18:08:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2021-12-06 18:08:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:08:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2021-12-06 18:08:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2021-12-06 18:08:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2021-12-06 18:08:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2021-12-06 18:08:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2021-12-06 18:08:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2021-12-06 18:08:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2021-12-06 18:08:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2021-12-06 18:08:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2021-12-06 18:08:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2021-12-06 18:08:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-12-06 18:08:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-12-06 18:08:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-12-06 18:08:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:08:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:08:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-12-06 18:08:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-12-06 18:08:32,378 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:08:32,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:08:32,574 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 18:08:37,405 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:08:37,436 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:08:37,436 INFO L301 CfgBuilder]: Removed 81 assume(true) statements. [2021-12-06 18:08:37,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:08:37 BoogieIcfgContainer [2021-12-06 18:08:37,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:08:37,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:08:37,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:08:37,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:08:37,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:08:28" (1/3) ... [2021-12-06 18:08:37,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122c048b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:08:37, skipping insertion in model container [2021-12-06 18:08:37,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:08:31" (2/3) ... [2021-12-06 18:08:37,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122c048b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:08:37, skipping insertion in model container [2021-12-06 18:08:37,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:08:37" (3/3) ... [2021-12-06 18:08:37,447 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-12-06 18:08:37,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:08:37,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:08:37,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:08:37,500 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 18:08:37,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:08:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 3635 states, 2087 states have (on average 1.3143267848586488) internal successors, (2743), 2242 states have internal predecessors, (2743), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) [2021-12-06 18:08:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 18:08:37,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:37,625 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 18:08:37,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:08:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:37,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1146511857, now seen corresponding path program 1 times [2021-12-06 18:08:37,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:08:37,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642872302] [2021-12-06 18:08:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:37,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:08:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:08:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:08:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:08:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:08:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:08:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:08:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 18:08:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:08:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 18:08:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-06 18:08:38,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:08:38,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642872302] [2021-12-06 18:08:38,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642872302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:38,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:38,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:08:38,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051150672] [2021-12-06 18:08:38,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:38,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:08:38,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:08:38,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:08:38,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:08:38,354 INFO L87 Difference]: Start difference. First operand has 3635 states, 2087 states have (on average 1.3143267848586488) internal successors, (2743), 2242 states have internal predecessors, (2743), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 18:08:40,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:08:41,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:08:43,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:08:46,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:08:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:08:56,752 INFO L93 Difference]: Finished difference Result 10779 states and 17210 transitions. [2021-12-06 18:08:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:08:56,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2021-12-06 18:08:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:08:56,817 INFO L225 Difference]: With dead ends: 10779 [2021-12-06 18:08:56,817 INFO L226 Difference]: Without dead ends: 7107 [2021-12-06 18:08:56,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 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 18:08:56,853 INFO L933 BasicCegarLoop]: 4727 mSDtfsCounter, 7648 mSDsluCounter, 6220 mSDsCounter, 0 mSdLazyCounter, 6654 mSolverCounterSat, 10825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8148 SdHoareTripleChecker+Valid, 10947 SdHoareTripleChecker+Invalid, 17479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10825 IncrementalHoareTripleChecker+Valid, 6654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:08:56,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8148 Valid, 10947 Invalid, 17479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10825 Valid, 6654 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2021-12-06 18:08:56,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7107 states. [2021-12-06 18:08:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7107 to 6695. [2021-12-06 18:08:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6695 states, 3651 states have (on average 1.301287318542865) internal successors, (4751), 3791 states have internal predecessors, (4751), 2803 states have call successors, (2803), 241 states have call predecessors, (2803), 240 states have return successors, (2802), 2732 states have call predecessors, (2802), 2802 states have call successors, (2802) [2021-12-06 18:08:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6695 states to 6695 states and 10356 transitions. [2021-12-06 18:08:57,432 INFO L78 Accepts]: Start accepts. Automaton has 6695 states and 10356 transitions. Word has length 78 [2021-12-06 18:08:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:08:57,433 INFO L470 AbstractCegarLoop]: Abstraction has 6695 states and 10356 transitions. [2021-12-06 18:08:57,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 18:08:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6695 states and 10356 transitions. [2021-12-06 18:08:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 18:08:57,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:08:57,440 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-12-06 18:08:57,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:08:57,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:08:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:08:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash 673830489, now seen corresponding path program 1 times [2021-12-06 18:08:57,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:08:57,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964304952] [2021-12-06 18:08:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:08:57,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:08:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:08:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:08:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:08:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:08:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:08:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:08:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 18:08:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:08:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 18:08:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:08:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-06 18:08:57,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:08:57,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964304952] [2021-12-06 18:08:57,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964304952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:08:57,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:08:57,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:08:57,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623575702] [2021-12-06 18:08:57,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:08:57,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:08:57,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:08:57,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:08:57,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:08:57,816 INFO L87 Difference]: Start difference. First operand 6695 states and 10356 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 18:09:00,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:09:06,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:09:08,531 WARN L534 Checker$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 18:09:11,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:09:13,112 WARN L534 Checker$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 18:09:23,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:09:23,275 INFO L93 Difference]: Finished difference Result 20832 states and 32567 transitions. [2021-12-06 18:09:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:09:23,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2021-12-06 18:09:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:09:23,377 INFO L225 Difference]: With dead ends: 20832 [2021-12-06 18:09:23,377 INFO L226 Difference]: Without dead ends: 14154 [2021-12-06 18:09:23,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:09:23,413 INFO L933 BasicCegarLoop]: 5158 mSDtfsCounter, 7494 mSDsluCounter, 15609 mSDsCounter, 0 mSdLazyCounter, 12278 mSolverCounterSat, 10474 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7976 SdHoareTripleChecker+Valid, 20767 SdHoareTripleChecker+Invalid, 22756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10474 IncrementalHoareTripleChecker+Valid, 12278 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:09:23,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7976 Valid, 20767 Invalid, 22756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10474 Valid, 12278 Invalid, 4 Unknown, 0 Unchecked, 24.7s Time] [2021-12-06 18:09:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14154 states. [2021-12-06 18:09:24,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14154 to 13488. [2021-12-06 18:09:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 7373 states have (on average 1.3025905330259053) internal successors, (9604), 7673 states have internal predecessors, (9604), 5616 states have call successors, (5616), 481 states have call predecessors, (5616), 498 states have return successors, (5782), 5487 states have call predecessors, (5782), 5615 states have call successors, (5782) [2021-12-06 18:09:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 21002 transitions. [2021-12-06 18:09:24,342 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 21002 transitions. Word has length 81 [2021-12-06 18:09:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:09:24,343 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 21002 transitions. [2021-12-06 18:09:24,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 18:09:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 21002 transitions. [2021-12-06 18:09:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 18:09:24,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:09:24,360 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 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] [2021-12-06 18:09:24,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:09:24,361 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:09:24,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:09:24,361 INFO L85 PathProgramCache]: Analyzing trace with hash -451464136, now seen corresponding path program 1 times [2021-12-06 18:09:24,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:09:24,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125164601] [2021-12-06 18:09:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:09:24,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:09:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:09:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:09:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:09:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:09:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:09:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:09:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 18:09:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:09:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 18:09:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 18:09:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:09:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:09:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 18:09:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 18:09:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:09:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 18:09:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-06 18:09:24,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:09:24,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125164601] [2021-12-06 18:09:24,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125164601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:09:24,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:09:24,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:09:24,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372505213] [2021-12-06 18:09:24,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:09:24,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:09:24,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:09:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:09:24,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:09:24,818 INFO L87 Difference]: Start difference. First operand 13488 states and 21002 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 18:09:26,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:09:27,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:09:31,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 18:09:33,089 WARN L534 Checker$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 18:09:38,283 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 18:09:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:09:46,193 INFO L93 Difference]: Finished difference Result 37710 states and 59166 transitions. [2021-12-06 18:09:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:09:46,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 158 [2021-12-06 18:09:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:09:46,341 INFO L225 Difference]: With dead ends: 37710 [2021-12-06 18:09:46,341 INFO L226 Difference]: Without dead ends: 24244 [2021-12-06 18:09:46,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:09:46,393 INFO L933 BasicCegarLoop]: 4478 mSDtfsCounter, 7653 mSDsluCounter, 6019 mSDsCounter, 0 mSdLazyCounter, 6238 mSolverCounterSat, 13155 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8782 SdHoareTripleChecker+Valid, 10497 SdHoareTripleChecker+Invalid, 19396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13155 IncrementalHoareTripleChecker+Valid, 6238 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:09:46,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8782 Valid, 10497 Invalid, 19396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13155 Valid, 6238 Invalid, 3 Unknown, 0 Unchecked, 20.4s Time] [2021-12-06 18:09:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24244 states. [2021-12-06 18:09:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24244 to 23296. [2021-12-06 18:09:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23296 states, 12317 states have (on average 1.3027522935779816) internal successors, (16046), 12807 states have internal predecessors, (16046), 10078 states have call successors, (10078), 857 states have call predecessors, (10078), 900 states have return successors, (10383), 9907 states have call predecessors, (10383), 10077 states have call successors, (10383) [2021-12-06 18:09:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23296 states to 23296 states and 36507 transitions. [2021-12-06 18:09:47,943 INFO L78 Accepts]: Start accepts. Automaton has 23296 states and 36507 transitions. Word has length 158 [2021-12-06 18:09:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:09:47,943 INFO L470 AbstractCegarLoop]: Abstraction has 23296 states and 36507 transitions. [2021-12-06 18:09:47,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 18:09:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 23296 states and 36507 transitions. [2021-12-06 18:09:47,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 18:09:47,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:09:47,957 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:09:47,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:09:47,958 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:09:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:09:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1345413806, now seen corresponding path program 1 times [2021-12-06 18:09:47,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:09:47,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302572921] [2021-12-06 18:09:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:09:47,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:09:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:48,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:09:48,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302572921] [2021-12-06 18:09:48,165 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 18:09:48,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542819791] [2021-12-06 18:09:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:09:48,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:09:48,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:09:48,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:09:48,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:09:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:09:48,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 4966 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:09:48,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:09:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-06 18:09:49,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:09:49,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542819791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:09:49,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:09:49,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:09:49,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003916251] [2021-12-06 18:09:49,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:09:49,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:09:49,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:09:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:09:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:09:49,328 INFO L87 Difference]: Start difference. First operand 23296 states and 36507 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:09:56,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:09:56,459 INFO L93 Difference]: Finished difference Result 69860 states and 109531 transitions. [2021-12-06 18:09:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:09:56,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 177 [2021-12-06 18:09:56,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:09:56,811 INFO L225 Difference]: With dead ends: 69860 [2021-12-06 18:09:56,812 INFO L226 Difference]: Without dead ends: 46586 [2021-12-06 18:09:56,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:09:56,921 INFO L933 BasicCegarLoop]: 6652 mSDtfsCounter, 5141 mSDsluCounter, 9920 mSDsCounter, 0 mSdLazyCounter, 5681 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5145 SdHoareTripleChecker+Valid, 16572 SdHoareTripleChecker+Invalid, 5697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:09:56,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5145 Valid, 16572 Invalid, 5697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 5681 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-06 18:09:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46586 states. [2021-12-06 18:09:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46586 to 46578. [2021-12-06 18:09:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46578 states, 24623 states have (on average 1.3028875441660237) internal successors, (32081), 25611 states have internal predecessors, (32081), 20146 states have call successors, (20146), 1713 states have call predecessors, (20146), 1808 states have return successors, (20805), 19805 states have call predecessors, (20805), 20145 states have call successors, (20805) [2021-12-06 18:10:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46578 states to 46578 states and 73032 transitions. [2021-12-06 18:10:00,082 INFO L78 Accepts]: Start accepts. Automaton has 46578 states and 73032 transitions. Word has length 177 [2021-12-06 18:10:00,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:00,082 INFO L470 AbstractCegarLoop]: Abstraction has 46578 states and 73032 transitions. [2021-12-06 18:10:00,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:10:00,083 INFO L276 IsEmpty]: Start isEmpty. Operand 46578 states and 73032 transitions. [2021-12-06 18:10:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-06 18:10:00,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:00,095 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:00,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:10:00,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:00,296 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:00,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:00,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1720930785, now seen corresponding path program 1 times [2021-12-06 18:10:00,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:00,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650856049] [2021-12-06 18:10:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:00,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:10:00,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:00,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650856049] [2021-12-06 18:10:00,495 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 18:10:00,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045241786] [2021-12-06 18:10:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:00,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:00,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:00,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:00,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:10:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:10:01,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 4964 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:10:01,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-06 18:10:01,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:10:01,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045241786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:10:01,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:10:01,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:10:01,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784170815] [2021-12-06 18:10:01,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:10:01,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:10:01,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:01,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:10:01,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:10:01,503 INFO L87 Difference]: Start difference. First operand 46578 states and 73032 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:10:11,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:11,841 INFO L93 Difference]: Finished difference Result 139706 states and 219162 transitions. [2021-12-06 18:10:11,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:10:11,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 176 [2021-12-06 18:10:11,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:12,456 INFO L225 Difference]: With dead ends: 139706 [2021-12-06 18:10:12,457 INFO L226 Difference]: Without dead ends: 93150 [2021-12-06 18:10:12,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:10:12,673 INFO L933 BasicCegarLoop]: 6652 mSDtfsCounter, 5110 mSDsluCounter, 12859 mSDsCounter, 0 mSdLazyCounter, 5690 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5114 SdHoareTripleChecker+Valid, 19511 SdHoareTripleChecker+Invalid, 5706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:12,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5114 Valid, 19511 Invalid, 5706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 5690 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-12-06 18:10:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93150 states. [2021-12-06 18:10:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93150 to 93142. [2021-12-06 18:10:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93142 states, 49235 states have (on average 1.3029552147862293) internal successors, (64151), 51219 states have internal predecessors, (64151), 40282 states have call successors, (40282), 3425 states have call predecessors, (40282), 3624 states have return successors, (41689), 39601 states have call predecessors, (41689), 40281 states have call successors, (41689) [2021-12-06 18:10:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93142 states to 93142 states and 146122 transitions. [2021-12-06 18:10:19,361 INFO L78 Accepts]: Start accepts. Automaton has 93142 states and 146122 transitions. Word has length 176 [2021-12-06 18:10:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:19,362 INFO L470 AbstractCegarLoop]: Abstraction has 93142 states and 146122 transitions. [2021-12-06 18:10:19,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:10:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand 93142 states and 146122 transitions. [2021-12-06 18:10:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 18:10:19,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:19,375 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:19,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:10:19,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:19,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:19,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1952723066, now seen corresponding path program 1 times [2021-12-06 18:10:19,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:19,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391193725] [2021-12-06 18:10:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:19,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:10:19,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:19,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391193725] [2021-12-06 18:10:19,807 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 18:10:19,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302932217] [2021-12-06 18:10:19,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:19,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:19,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:19,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:19,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:10:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:10:20,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 4968 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:10:20,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-06 18:10:20,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:10:20,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302932217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:10:20,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:10:20,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:10:20,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885324958] [2021-12-06 18:10:20,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:10:20,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:10:20,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:10:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:10:20,765 INFO L87 Difference]: Start difference. First operand 93142 states and 146122 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:10:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:10:35,284 INFO L93 Difference]: Finished difference Result 279398 states and 438592 transitions. [2021-12-06 18:10:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:10:35,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 178 [2021-12-06 18:10:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:10:36,398 INFO L225 Difference]: With dead ends: 279398 [2021-12-06 18:10:36,398 INFO L226 Difference]: Without dead ends: 186278 [2021-12-06 18:10:36,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:10:36,813 INFO L933 BasicCegarLoop]: 6602 mSDtfsCounter, 5140 mSDsluCounter, 9920 mSDsCounter, 0 mSdLazyCounter, 5681 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 16522 SdHoareTripleChecker+Invalid, 5697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:10:36,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5144 Valid, 16522 Invalid, 5697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 5681 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-12-06 18:10:36,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186278 states. [2021-12-06 18:10:48,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186278 to 186270. [2021-12-06 18:10:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186270 states, 98459 states have (on average 1.30298906143674) internal successors, (128291), 102435 states have internal predecessors, (128291), 80554 states have call successors, (80554), 6849 states have call predecessors, (80554), 7256 states have return successors, (83585), 79193 states have call predecessors, (83585), 80553 states have call successors, (83585) [2021-12-06 18:10:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186270 states to 186270 states and 292430 transitions. [2021-12-06 18:10:49,846 INFO L78 Accepts]: Start accepts. Automaton has 186270 states and 292430 transitions. Word has length 178 [2021-12-06 18:10:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:10:49,846 INFO L470 AbstractCegarLoop]: Abstraction has 186270 states and 292430 transitions. [2021-12-06 18:10:49,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:10:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 186270 states and 292430 transitions. [2021-12-06 18:10:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:10:49,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:10:49,861 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:10:49,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:10:50,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:50,062 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:10:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:10:50,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1335531467, now seen corresponding path program 1 times [2021-12-06 18:10:50,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:10:50,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382027533] [2021-12-06 18:10:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:50,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:10:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:10:50,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:10:50,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382027533] [2021-12-06 18:10:50,282 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 18:10:50,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370576579] [2021-12-06 18:10:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:10:50,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:10:50,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:10:50,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:10:50,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:10:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:10:51,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 4962 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:10:51,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:10:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-06 18:10:51,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:10:51,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370576579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:10:51,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:10:51,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:10:51,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346077243] [2021-12-06 18:10:51,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:10:51,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:10:51,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:10:51,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:10:51,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:10:51,360 INFO L87 Difference]: Start difference. First operand 186270 states and 292430 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:11:15,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:15,194 INFO L93 Difference]: Finished difference Result 558782 states and 877980 transitions. [2021-12-06 18:11:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:11:15,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 175 [2021-12-06 18:11:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:17,599 INFO L225 Difference]: With dead ends: 558782 [2021-12-06 18:11:17,599 INFO L226 Difference]: Without dead ends: 372290 [2021-12-06 18:11:18,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:11:18,533 INFO L933 BasicCegarLoop]: 8036 mSDtfsCounter, 5139 mSDsluCounter, 9908 mSDsCounter, 0 mSdLazyCounter, 5688 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5143 SdHoareTripleChecker+Valid, 17944 SdHoareTripleChecker+Invalid, 5703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 5688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:18,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5143 Valid, 17944 Invalid, 5703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 5688 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-12-06 18:11:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372290 states. [2021-12-06 18:11:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372290 to 372026. [2021-12-06 18:11:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372026 states, 196503 states have (on average 1.3033846811499061) internal successors, (256119), 204679 states have internal predecessors, (256119), 161022 states have call successors, (161022), 13689 states have call predecessors, (161022), 14500 states have return successors, (167669), 158041 states have call predecessors, (167669), 161021 states have call successors, (167669) [2021-12-06 18:11:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372026 states to 372026 states and 584810 transitions. [2021-12-06 18:11:46,516 INFO L78 Accepts]: Start accepts. Automaton has 372026 states and 584810 transitions. Word has length 175 [2021-12-06 18:11:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:46,516 INFO L470 AbstractCegarLoop]: Abstraction has 372026 states and 584810 transitions. [2021-12-06 18:11:46,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 18:11:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 372026 states and 584810 transitions. [2021-12-06 18:11:46,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-06 18:11:46,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:46,661 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:46,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 18:11:46,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 18:11:46,863 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:46,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1889189756, now seen corresponding path program 1 times [2021-12-06 18:11:46,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:46,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008689126] [2021-12-06 18:11:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:46,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:11:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:11:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:11:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:11:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:11:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:11:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 18:11:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:11:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 18:11:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:47,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 18:11:47,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:47,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008689126] [2021-12-06 18:11:47,339 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 18:11:47,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743039175] [2021-12-06 18:11:47,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:47,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:47,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:47,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:47,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:11:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:48,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 5011 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:11:48,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-06 18:11:48,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:11:48,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743039175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:48,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:48,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:11:48,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005700298] [2021-12-06 18:11:48,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:48,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:11:48,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:11:48,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:11:48,525 INFO L87 Difference]: Start difference. First operand 372026 states and 584810 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 18:12:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:12:17,348 INFO L93 Difference]: Finished difference Result 744286 states and 1170229 transitions. [2021-12-06 18:12:17,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:12:17,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 191 [2021-12-06 18:12:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:12:19,855 INFO L225 Difference]: With dead ends: 744286 [2021-12-06 18:12:19,855 INFO L226 Difference]: Without dead ends: 372282 [2021-12-06 18:12:21,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:12:21,968 INFO L933 BasicCegarLoop]: 5195 mSDtfsCounter, 5155 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 5654 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5159 SdHoareTripleChecker+Valid, 9906 SdHoareTripleChecker+Invalid, 5682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:12:21,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5159 Valid, 9906 Invalid, 5682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5654 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2021-12-06 18:12:22,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372282 states. [2021-12-06 18:12:46,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372282 to 372282. [2021-12-06 18:12:46,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372282 states, 196631 states have (on average 1.303187188184976) internal successors, (256247), 204935 states have internal predecessors, (256247), 161022 states have call successors, (161022), 13689 states have call predecessors, (161022), 14628 states have return successors, (167925), 158041 states have call predecessors, (167925), 161021 states have call successors, (167925) [2021-12-06 18:12:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372282 states to 372282 states and 585194 transitions. [2021-12-06 18:12:49,892 INFO L78 Accepts]: Start accepts. Automaton has 372282 states and 585194 transitions. Word has length 191 [2021-12-06 18:12:49,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:12:49,892 INFO L470 AbstractCegarLoop]: Abstraction has 372282 states and 585194 transitions. [2021-12-06 18:12:49,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 18:12:49,892 INFO L276 IsEmpty]: Start isEmpty. Operand 372282 states and 585194 transitions. [2021-12-06 18:12:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 18:12:49,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:12:49,918 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:12:49,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:12:50,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:50,120 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:12:50,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:12:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1916428749, now seen corresponding path program 1 times [2021-12-06 18:12:50,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:12:50,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526443419] [2021-12-06 18:12:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:50,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:12:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:12:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:12:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:12:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:12:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:12:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:12:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 18:12:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:12:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 18:12:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 18:12:50,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:12:50,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526443419] [2021-12-06 18:12:50,459 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 18:12:50,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023915650] [2021-12-06 18:12:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:12:50,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:12:50,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:12:50,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:12:50,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:12:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:12:51,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 5009 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:12:51,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:12:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-06 18:12:51,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:12:51,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023915650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:12:51,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:12:51,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:12:51,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41057286] [2021-12-06 18:12:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:12:51,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:12:51,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:12:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:12:51,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:12:51,547 INFO L87 Difference]: Start difference. First operand 372282 states and 585194 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 18:13:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:35,175 INFO L93 Difference]: Finished difference Result 1116802 states and 1755520 transitions. [2021-12-06 18:13:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:13:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 190 [2021-12-06 18:13:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:41,478 INFO L225 Difference]: With dead ends: 1116802 [2021-12-06 18:13:41,478 INFO L226 Difference]: Without dead ends: 744542 [2021-12-06 18:13:44,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:13:44,363 INFO L933 BasicCegarLoop]: 6715 mSDtfsCounter, 5098 mSDsluCounter, 12995 mSDsCounter, 0 mSdLazyCounter, 5670 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5102 SdHoareTripleChecker+Valid, 19710 SdHoareTripleChecker+Invalid, 5698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:44,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5102 Valid, 19710 Invalid, 5698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 5670 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-12-06 18:13:45,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744542 states. [2021-12-06 18:14:33,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744542 to 744022. [2021-12-06 18:14:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744022 states, 392731 states have (on average 1.3035971186384574) internal successors, (511963), 409851 states have internal predecessors, (511963), 322034 states have call successors, (322034), 27377 states have call predecessors, (322034), 29256 states have return successors, (335585), 315561 states have call predecessors, (335585), 322033 states have call successors, (335585) [2021-12-06 18:14:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744022 states to 744022 states and 1169582 transitions. [2021-12-06 18:14:41,484 INFO L78 Accepts]: Start accepts. Automaton has 744022 states and 1169582 transitions. Word has length 190 [2021-12-06 18:14:41,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:14:41,485 INFO L470 AbstractCegarLoop]: Abstraction has 744022 states and 1169582 transitions. [2021-12-06 18:14:41,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 18:14:41,485 INFO L276 IsEmpty]: Start isEmpty. Operand 744022 states and 1169582 transitions. [2021-12-06 18:14:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-06 18:14:41,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:14:41,517 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:14:41,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:14:41,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:41,719 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:14:41,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:14:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1308019919, now seen corresponding path program 1 times [2021-12-06 18:14:41,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:14:41,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915466960] [2021-12-06 18:14:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:41,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:14:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:14:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:14:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:14:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:14:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:41,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:14:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:41,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:14:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:41,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 18:14:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:14:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:42,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 18:14:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:42,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 18:14:42,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:14:42,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915466960] [2021-12-06 18:14:42,054 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 18:14:42,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227832199] [2021-12-06 18:14:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:14:42,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:14:42,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:14:42,055 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:14:42,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:14:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:14:42,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 5015 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:14:42,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:14:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-06 18:14:43,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:14:43,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227832199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:14:43,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:14:43,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:14:43,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867093396] [2021-12-06 18:14:43,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:14:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:14:43,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:14:43,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:14:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:14:43,069 INFO L87 Difference]: Start difference. First operand 744022 states and 1169582 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 18:15:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:15:28,703 INFO L93 Difference]: Finished difference Result 1116282 states and 1754745 transitions. [2021-12-06 18:15:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:15:28,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 193 [2021-12-06 18:15:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:15:34,203 INFO L225 Difference]: With dead ends: 1116282 [2021-12-06 18:15:34,203 INFO L226 Difference]: Without dead ends: 744022 [2021-12-06 18:15:36,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:15:36,646 INFO L933 BasicCegarLoop]: 5195 mSDtfsCounter, 5130 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 5651 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5134 SdHoareTripleChecker+Valid, 9906 SdHoareTripleChecker+Invalid, 5679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:15:36,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5134 Valid, 9906 Invalid, 5679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5651 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2021-12-06 18:15:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744022 states. [2021-12-06 18:16:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744022 to 744022. [2021-12-06 18:16:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744022 states, 392731 states have (on average 1.3035971186384574) internal successors, (511963), 409851 states have internal predecessors, (511963), 322034 states have call successors, (322034), 27377 states have call predecessors, (322034), 29256 states have return successors, (335073), 315561 states have call predecessors, (335073), 322033 states have call successors, (335073) [2021-12-06 18:16:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744022 states to 744022 states and 1169070 transitions. [2021-12-06 18:16:35,197 INFO L78 Accepts]: Start accepts. Automaton has 744022 states and 1169070 transitions. Word has length 193 [2021-12-06 18:16:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:16:35,197 INFO L470 AbstractCegarLoop]: Abstraction has 744022 states and 1169070 transitions. [2021-12-06 18:16:35,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 18:16:35,198 INFO L276 IsEmpty]: Start isEmpty. Operand 744022 states and 1169070 transitions. [2021-12-06 18:16:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-06 18:16:35,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:16:35,231 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:16:35,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:16:35,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:16:35,433 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:16:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:16:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1060972698, now seen corresponding path program 1 times [2021-12-06 18:16:35,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:16:35,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631544279] [2021-12-06 18:16:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:16:35,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:16:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:16:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 18:16:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 18:16:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:16:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 18:16:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 18:16:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 18:16:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:16:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 18:16:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:35,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 18:16:35,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:16:35,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631544279] [2021-12-06 18:16:35,719 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 18:16:35,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136844309] [2021-12-06 18:16:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:16:35,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:16:35,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:16:35,720 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:16:35,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8b351f-806d-4e74-be5d-d6ffda48c50a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:16:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:16:36,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 5013 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:16:36,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:16:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-06 18:16:36,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:16:36,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136844309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:16:36,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:16:36,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:16:36,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116004027] [2021-12-06 18:16:36,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:16:36,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:16:36,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:16:36,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:16:36,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:16:36,913 INFO L87 Difference]: Start difference. First operand 744022 states and 1169070 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22)