./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS --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 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 01:52:34,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:52:34,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:52:34,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:52:34,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:52:34,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:52:34,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:52:34,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:52:34,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:52:34,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:52:34,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:52:34,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:52:34,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:52:34,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:52:34,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:52:34,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:52:34,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:52:34,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:52:34,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:52:34,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:52:34,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:52:34,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:52:34,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:52:34,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:52:34,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:52:34,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:52:34,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:52:34,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:52:34,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:52:34,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:52:34,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:52:34,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:52:34,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:52:34,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:52:34,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:52:34,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:52:34,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:52:34,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:52:34,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:52:34,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:52:34,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:52:34,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-23 01:52:34,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:52:34,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:52:34,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:52:34,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:52:34,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:52:34,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:52:34,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:52:34,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:52:34,915 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:52:34,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:52:34,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:52:34,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:52:34,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:52:34,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:52:34,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:52:34,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:52:34,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:52:34,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:52:34,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:52:34,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:52:34,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:52:34,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:52:34,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:52:34,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:52:34,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:52:34,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:52:34,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:52:34,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:52:34,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:52:34,920 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:52:34,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:52:34,921 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-11-23 01:52:35,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:52:35,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:52:35,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:52:35,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:52:35,200 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:52:35,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-23 01:52:38,259 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:52:38,764 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:52:38,767 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-23 01:52:38,807 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/data/b228fb5ca/971f937d62c34238bd893bca176858a5/FLAG8f0fc6d1c [2022-11-23 01:52:38,819 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/data/b228fb5ca/971f937d62c34238bd893bca176858a5 [2022-11-23 01:52:38,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:52:38,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:52:38,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:52:38,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:52:38,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:52:38,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:38" (1/1) ... [2022-11-23 01:52:38,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f2d886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:38, skipping insertion in model container [2022-11-23 01:52:38,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:38" (1/1) ... [2022-11-23 01:52:38,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:52:38,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:52:40,228 WARN L237 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_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-23 01:52:40,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:52:40,263 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:52:40,589 WARN L237 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_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-23 01:52:40,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:52:40,686 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:52:40,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40 WrapperNode [2022-11-23 01:52:40,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:52:40,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:52:40,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:52:40,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:52:40,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:40,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:40,874 INFO L138 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2777 [2022-11-23 01:52:40,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:52:40,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:52:40,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:52:40,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:52:40,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:40,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:40,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:40,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:40,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:40,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:41,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:41,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:41,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:52:41,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:52:41,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:52:41,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:52:41,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (1/1) ... [2022-11-23 01:52:41,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:52:41,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:52:41,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:52:41,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:52:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 01:52:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-23 01:52:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 01:52:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 01:52:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 01:52:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 01:52:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 01:52:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-23 01:52:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-23 01:52:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-23 01:52:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-23 01:52:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 01:52:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 01:52:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 01:52:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 01:52:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 01:52:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 01:52:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 01:52:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 01:52:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-11-23 01:52:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-11-23 01:52:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-23 01:52:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-23 01:52:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 01:52:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 01:52:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-23 01:52:41,192 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-23 01:52:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 01:52:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-23 01:52:41,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-23 01:52:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-23 01:52:41,193 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-23 01:52:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 01:52:41,193 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 01:52:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 01:52:41,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 01:52:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 01:52:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 01:52:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-23 01:52:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-23 01:52:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 01:52:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-23 01:52:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-23 01:52:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-23 01:52:41,196 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-23 01:52:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:52:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 01:52:41,197 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 01:52:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-23 01:52:41,197 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-23 01:52:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 01:52:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 01:52:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 01:52:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 01:52:41,198 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 01:52:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 01:52:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-23 01:52:41,199 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-23 01:52:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 01:52:41,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 01:52:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 01:52:41,201 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 01:52:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-23 01:52:41,201 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-23 01:52:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-23 01:52:41,202 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-23 01:52:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 01:52:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-23 01:52:41,202 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-23 01:52:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 01:52:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-23 01:52:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-23 01:52:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-23 01:52:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-23 01:52:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 01:52:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 01:52:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 01:52:41,204 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 01:52:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 01:52:41,204 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 01:52:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 01:52:41,205 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 01:52:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 01:52:41,206 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 01:52:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 01:52:41,206 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 01:52:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 01:52:41,207 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 01:52:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:52:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-23 01:52:41,208 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-23 01:52:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-23 01:52:41,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-23 01:52:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-23 01:52:41,208 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-23 01:52:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 01:52:41,208 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 01:52:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 01:52:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:52:41,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:52:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-23 01:52:41,209 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-23 01:52:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-23 01:52:41,210 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-23 01:52:41,761 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:52:41,764 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:52:44,787 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:52:44,813 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:52:44,813 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 01:52:44,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:44 BoogieIcfgContainer [2022-11-23 01:52:44,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:52:44,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:52:44,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:52:44,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:52:44,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:38" (1/3) ... [2022-11-23 01:52:44,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d98e111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:44, skipping insertion in model container [2022-11-23 01:52:44,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40" (2/3) ... [2022-11-23 01:52:44,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d98e111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:44, skipping insertion in model container [2022-11-23 01:52:44,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:44" (3/3) ... [2022-11-23 01:52:44,836 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-23 01:52:44,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:52:44,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:52:44,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:52:44,958 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2cf4cc1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:52:44,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:52:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 964 states, 712 states have (on average 1.4297752808988764) internal successors, (1018), 739 states have internal predecessors, (1018), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-11-23 01:52:44,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 01:52:44,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:44,988 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:52:44,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:44,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:44,994 INFO L85 PathProgramCache]: Analyzing trace with hash 350663452, now seen corresponding path program 1 times [2022-11-23 01:52:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:45,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998829830] [2022-11-23 01:52:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:45,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:52:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:52:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:45,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:52:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 01:52:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 01:52:45,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:45,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998829830] [2022-11-23 01:52:45,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998829830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:45,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:45,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:52:45,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33346050] [2022-11-23 01:52:45,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:52:45,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:45,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:52:45,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:52:45,648 INFO L87 Difference]: Start difference. First operand has 964 states, 712 states have (on average 1.4297752808988764) internal successors, (1018), 739 states have internal predecessors, (1018), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 01:52:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:47,532 INFO L93 Difference]: Finished difference Result 1942 states and 2905 transitions. [2022-11-23 01:52:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:52:47,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2022-11-23 01:52:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:47,559 INFO L225 Difference]: With dead ends: 1942 [2022-11-23 01:52:47,566 INFO L226 Difference]: Without dead ends: 943 [2022-11-23 01:52:47,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:52:47,582 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 1570 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:47,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 1594 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 01:52:47,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-11-23 01:52:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 925. [2022-11-23 01:52:47,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 682 states have (on average 1.4193548387096775) internal successors, (968), 706 states have internal predecessors, (968), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-23 01:52:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1366 transitions. [2022-11-23 01:52:47,754 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1366 transitions. Word has length 59 [2022-11-23 01:52:47,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:47,755 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1366 transitions. [2022-11-23 01:52:47,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 01:52:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1366 transitions. [2022-11-23 01:52:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 01:52:47,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:47,765 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:52:47,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:52:47,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:47,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash 774310174, now seen corresponding path program 1 times [2022-11-23 01:52:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:47,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478035336] [2022-11-23 01:52:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:47,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:52:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:52:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:52:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:47,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:47,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 01:52:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 01:52:47,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:47,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478035336] [2022-11-23 01:52:47,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478035336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:47,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:47,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 01:52:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901486864] [2022-11-23 01:52:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:52:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:52:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:52:47,990 INFO L87 Difference]: Start difference. First operand 925 states and 1366 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 01:52:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:50,037 INFO L93 Difference]: Finished difference Result 1851 states and 2740 transitions. [2022-11-23 01:52:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:52:50,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-23 01:52:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:50,044 INFO L225 Difference]: With dead ends: 1851 [2022-11-23 01:52:50,045 INFO L226 Difference]: Without dead ends: 943 [2022-11-23 01:52:50,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:52:50,049 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 421 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:50,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 3109 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 01:52:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-11-23 01:52:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 925. [2022-11-23 01:52:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 682 states have (on average 1.4178885630498534) internal successors, (967), 706 states have internal predecessors, (967), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-23 01:52:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1365 transitions. [2022-11-23 01:52:50,107 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1365 transitions. Word has length 59 [2022-11-23 01:52:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:50,108 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1365 transitions. [2022-11-23 01:52:50,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 01:52:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1365 transitions. [2022-11-23 01:52:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 01:52:50,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:50,112 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:52:50,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:52:50,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash 447329547, now seen corresponding path program 1 times [2022-11-23 01:52:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:50,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589239316] [2022-11-23 01:52:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:50,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:52:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:50,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:52:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:50,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:52:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:50,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:52:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 01:52:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589239316] [2022-11-23 01:52:50,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589239316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:50,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:50,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 01:52:50,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56462137] [2022-11-23 01:52:50,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:50,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:52:50,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:50,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:52:50,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:52:50,415 INFO L87 Difference]: Start difference. First operand 925 states and 1365 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 01:52:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:53,154 INFO L93 Difference]: Finished difference Result 1454 states and 2221 transitions. [2022-11-23 01:52:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 01:52:53,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-11-23 01:52:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:53,164 INFO L225 Difference]: With dead ends: 1454 [2022-11-23 01:52:53,164 INFO L226 Difference]: Without dead ends: 1452 [2022-11-23 01:52:53,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:52:53,166 INFO L413 NwaCegarLoop]: 1749 mSDtfsCounter, 1335 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 4912 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:53,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 4912 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 01:52:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2022-11-23 01:52:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 927. [2022-11-23 01:52:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 684 states have (on average 1.4166666666666667) internal successors, (969), 708 states have internal predecessors, (969), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-23 01:52:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1367 transitions. [2022-11-23 01:52:53,245 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1367 transitions. Word has length 62 [2022-11-23 01:52:53,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:53,245 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 1367 transitions. [2022-11-23 01:52:53,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 01:52:53,246 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1367 transitions. [2022-11-23 01:52:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 01:52:53,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:53,251 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:52:53,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:52:53,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:53,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:53,252 INFO L85 PathProgramCache]: Analyzing trace with hash 519397019, now seen corresponding path program 1 times [2022-11-23 01:52:53,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:53,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483293866] [2022-11-23 01:52:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:53,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:53,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:52:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:53,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:52:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:53,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:52:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:53,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:52:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:53,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 01:52:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 01:52:53,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:53,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483293866] [2022-11-23 01:52:53,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483293866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:53,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:53,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 01:52:53,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323754285] [2022-11-23 01:52:53,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:53,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:52:53,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:52:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:52:53,478 INFO L87 Difference]: Start difference. First operand 927 states and 1367 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:52:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:56,122 INFO L93 Difference]: Finished difference Result 2364 states and 3566 transitions. [2022-11-23 01:52:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:52:56,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-11-23 01:52:56,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:56,133 INFO L225 Difference]: With dead ends: 2364 [2022-11-23 01:52:56,133 INFO L226 Difference]: Without dead ends: 1456 [2022-11-23 01:52:56,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:52:56,147 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 2025 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:56,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 2979 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 01:52:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2022-11-23 01:52:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 928. [2022-11-23 01:52:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 685 states have (on average 1.416058394160584) internal successors, (970), 709 states have internal predecessors, (970), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-23 01:52:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1368 transitions. [2022-11-23 01:52:56,235 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1368 transitions. Word has length 72 [2022-11-23 01:52:56,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:56,238 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 1368 transitions. [2022-11-23 01:52:56,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:52:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1368 transitions. [2022-11-23 01:52:56,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 01:52:56,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:56,250 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:52:56,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 01:52:56,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1249255684, now seen corresponding path program 1 times [2022-11-23 01:52:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:56,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010840438] [2022-11-23 01:52:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:56,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:52:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:52:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:56,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:52:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:52:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:56,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:52:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:52:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 01:52:56,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:56,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010840438] [2022-11-23 01:52:56,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010840438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:56,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:56,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:52:56,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894051585] [2022-11-23 01:52:56,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:56,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:52:56,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:52:56,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:52:56,556 INFO L87 Difference]: Start difference. First operand 928 states and 1368 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:53:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:00,596 INFO L93 Difference]: Finished difference Result 2229 states and 3464 transitions. [2022-11-23 01:53:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 01:53:00,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-11-23 01:53:00,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:00,610 INFO L225 Difference]: With dead ends: 2229 [2022-11-23 01:53:00,611 INFO L226 Difference]: Without dead ends: 2227 [2022-11-23 01:53:00,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:53:00,614 INFO L413 NwaCegarLoop]: 2175 mSDtfsCounter, 2704 mSDsluCounter, 5511 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2901 SdHoareTripleChecker+Valid, 7686 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:00,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2901 Valid, 7686 Invalid, 3810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [764 Valid, 3046 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 01:53:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2022-11-23 01:53:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 930. [2022-11-23 01:53:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 686 states have (on average 1.4154518950437318) internal successors, (971), 709 states have internal predecessors, (971), 200 states have call successors, (200), 43 states have call predecessors, (200), 43 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2022-11-23 01:53:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1371 transitions. [2022-11-23 01:53:00,770 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1371 transitions. Word has length 74 [2022-11-23 01:53:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:00,773 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1371 transitions. [2022-11-23 01:53:00,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:53:00,773 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1371 transitions. [2022-11-23 01:53:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-23 01:53:00,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:00,778 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:53:00,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 01:53:00,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:00,779 INFO L85 PathProgramCache]: Analyzing trace with hash -265642255, now seen corresponding path program 1 times [2022-11-23 01:53:00,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:00,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726178507] [2022-11-23 01:53:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:00,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:53:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:00,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:53:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:00,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:53:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:01,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:53:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:53:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 01:53:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:01,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 01:53:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:01,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 01:53:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 01:53:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 01:53:01,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:01,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726178507] [2022-11-23 01:53:01,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726178507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:01,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:01,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:53:01,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965624572] [2022-11-23 01:53:01,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:01,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:53:01,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:53:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:53:01,077 INFO L87 Difference]: Start difference. First operand 930 states and 1371 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 01:53:02,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:02,985 INFO L93 Difference]: Finished difference Result 1888 states and 2776 transitions. [2022-11-23 01:53:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:53:02,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2022-11-23 01:53:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:02,991 INFO L225 Difference]: With dead ends: 1888 [2022-11-23 01:53:02,991 INFO L226 Difference]: Without dead ends: 977 [2022-11-23 01:53:02,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:53:02,994 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 1478 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:02,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1526 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 01:53:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-11-23 01:53:03,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 950. [2022-11-23 01:53:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 700 states have (on average 1.4071428571428573) internal successors, (985), 723 states have internal predecessors, (985), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-23 01:53:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1389 transitions. [2022-11-23 01:53:03,188 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1389 transitions. Word has length 104 [2022-11-23 01:53:03,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:03,189 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1389 transitions. [2022-11-23 01:53:03,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 01:53:03,189 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1389 transitions. [2022-11-23 01:53:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 01:53:03,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:03,195 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:53:03,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 01:53:03,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:03,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:03,195 INFO L85 PathProgramCache]: Analyzing trace with hash 992830187, now seen corresponding path program 1 times [2022-11-23 01:53:03,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:03,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504688944] [2022-11-23 01:53:03,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:03,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:53:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:53:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:53:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:53:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:53:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 01:53:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-23 01:53:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 01:53:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 01:53:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 01:53:03,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:03,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504688944] [2022-11-23 01:53:03,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504688944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:03,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:03,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 01:53:03,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40407783] [2022-11-23 01:53:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:03,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:53:03,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:53:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:53:03,511 INFO L87 Difference]: Start difference. First operand 950 states and 1389 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 01:53:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:06,229 INFO L93 Difference]: Finished difference Result 2401 states and 3601 transitions. [2022-11-23 01:53:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:53:06,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-11-23 01:53:06,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:06,237 INFO L225 Difference]: With dead ends: 2401 [2022-11-23 01:53:06,238 INFO L226 Difference]: Without dead ends: 1490 [2022-11-23 01:53:06,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:53:06,242 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 2077 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:06,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 3174 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 01:53:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2022-11-23 01:53:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 954. [2022-11-23 01:53:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 704 states have (on average 1.40625) internal successors, (990), 727 states have internal predecessors, (990), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-23 01:53:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1394 transitions. [2022-11-23 01:53:06,367 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1394 transitions. Word has length 106 [2022-11-23 01:53:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:06,369 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1394 transitions. [2022-11-23 01:53:06,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 01:53:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1394 transitions. [2022-11-23 01:53:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-23 01:53:06,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:06,374 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:53:06,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 01:53:06,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1872017422, now seen corresponding path program 1 times [2022-11-23 01:53:06,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:06,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886980892] [2022-11-23 01:53:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:06,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:53:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:53:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:53:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:53:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:53:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 01:53:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 01:53:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 01:53:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 01:53:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 01:53:06,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:06,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886980892] [2022-11-23 01:53:06,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886980892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:06,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:06,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:53:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966751778] [2022-11-23 01:53:06,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:06,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:53:06,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:53:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:53:06,577 INFO L87 Difference]: Start difference. First operand 954 states and 1394 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 01:53:08,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:08,196 INFO L93 Difference]: Finished difference Result 1897 states and 2793 transitions. [2022-11-23 01:53:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:53:08,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-11-23 01:53:08,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:08,205 INFO L225 Difference]: With dead ends: 1897 [2022-11-23 01:53:08,205 INFO L226 Difference]: Without dead ends: 982 [2022-11-23 01:53:08,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:53:08,210 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 417 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:08,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2305 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 01:53:08,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-11-23 01:53:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 954. [2022-11-23 01:53:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 704 states have (on average 1.4019886363636365) internal successors, (987), 727 states have internal predecessors, (987), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-23 01:53:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1391 transitions. [2022-11-23 01:53:08,381 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1391 transitions. Word has length 109 [2022-11-23 01:53:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:08,381 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1391 transitions. [2022-11-23 01:53:08,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 01:53:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1391 transitions. [2022-11-23 01:53:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 01:53:08,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:08,389 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:53:08,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 01:53:08,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:08,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:08,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1211480099, now seen corresponding path program 1 times [2022-11-23 01:53:08,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:08,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820637276] [2022-11-23 01:53:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:08,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:53:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:53:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:53:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:53:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:53:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 01:53:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 01:53:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 01:53:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 01:53:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 01:53:08,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:08,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820637276] [2022-11-23 01:53:08,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820637276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:53:08,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285740548] [2022-11-23 01:53:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:08,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:53:08,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:08,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:53:08,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:53:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:09,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 01:53:09,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:53:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 01:53:09,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:53:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 01:53:09,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285740548] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:53:09,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:53:09,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2022-11-23 01:53:09,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931001860] [2022-11-23 01:53:09,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:53:09,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 01:53:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 01:53:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:53:09,630 INFO L87 Difference]: Start difference. First operand 954 states and 1391 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-23 01:53:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:15,988 INFO L93 Difference]: Finished difference Result 3921 states and 6044 transitions. [2022-11-23 01:53:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 01:53:15,991 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 112 [2022-11-23 01:53:15,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:16,006 INFO L225 Difference]: With dead ends: 3921 [2022-11-23 01:53:16,006 INFO L226 Difference]: Without dead ends: 3006 [2022-11-23 01:53:16,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:53:16,011 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 4883 mSDsluCounter, 6318 mSDsCounter, 0 mSdLazyCounter, 5709 mSolverCounterSat, 1781 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5296 SdHoareTripleChecker+Valid, 7869 SdHoareTripleChecker+Invalid, 7490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1781 IncrementalHoareTripleChecker+Valid, 5709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:16,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5296 Valid, 7869 Invalid, 7490 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1781 Valid, 5709 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 01:53:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2022-11-23 01:53:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 961. [2022-11-23 01:53:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 711 states have (on average 1.40084388185654) internal successors, (996), 734 states have internal predecessors, (996), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-23 01:53:16,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1400 transitions. [2022-11-23 01:53:16,168 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1400 transitions. Word has length 112 [2022-11-23 01:53:16,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:16,169 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1400 transitions. [2022-11-23 01:53:16,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-23 01:53:16,169 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1400 transitions. [2022-11-23 01:53:16,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 01:53:16,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:16,174 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-23 01:53:16,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 01:53:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:53:16,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash 556670062, now seen corresponding path program 1 times [2022-11-23 01:53:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:16,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784978204] [2022-11-23 01:53:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:53:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:53:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:53:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:53:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:53:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 01:53:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 01:53:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 01:53:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 01:53:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:53:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 01:53:17,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:17,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784978204] [2022-11-23 01:53:17,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784978204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:53:17,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955700293] [2022-11-23 01:53:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:17,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:53:17,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:17,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:53:17,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:53:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:18,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 01:53:18,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:53:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 01:53:18,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:53:18,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955700293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:18,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:53:18,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-23 01:53:18,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874161039] [2022-11-23 01:53:18,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:18,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:53:18,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:53:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:53:18,145 INFO L87 Difference]: Start difference. First operand 961 states and 1400 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 01:53:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:18,827 INFO L93 Difference]: Finished difference Result 2655 states and 3989 transitions. [2022-11-23 01:53:18,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:53:18,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-11-23 01:53:18,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:18,836 INFO L225 Difference]: With dead ends: 2655 [2022-11-23 01:53:18,836 INFO L226 Difference]: Without dead ends: 1733 [2022-11-23 01:53:18,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:53:18,839 INFO L413 NwaCegarLoop]: 2096 mSDtfsCounter, 1176 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 5527 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:18,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 5527 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 01:53:18,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2022-11-23 01:53:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 963. [2022-11-23 01:53:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 713 states have (on average 1.399719495091164) internal successors, (998), 736 states have internal predecessors, (998), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-23 01:53:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1402 transitions. [2022-11-23 01:53:18,995 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1402 transitions. Word has length 121 [2022-11-23 01:53:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:18,996 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1402 transitions. [2022-11-23 01:53:18,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 01:53:18,996 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1402 transitions. [2022-11-23 01:53:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 01:53:19,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:19,001 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:53:19,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:53:19,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 01:53:19,209 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash -555566991, now seen corresponding path program 1 times [2022-11-23 01:53:19,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:19,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436862371] [2022-11-23 01:53:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:53:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:53:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:53:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:53:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:53:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 01:53:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 01:53:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 01:53:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 01:53:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 01:53:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-23 01:53:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-23 01:53:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 01:53:19,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:19,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436862371] [2022-11-23 01:53:19,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436862371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:19,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:19,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:53:19,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337576818] [2022-11-23 01:53:19,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:19,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:53:19,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:53:19,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:53:19,424 INFO L87 Difference]: Start difference. First operand 963 states and 1402 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 01:53:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:21,789 INFO L93 Difference]: Finished difference Result 2313 states and 3441 transitions. [2022-11-23 01:53:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:53:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-11-23 01:53:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:21,797 INFO L225 Difference]: With dead ends: 2313 [2022-11-23 01:53:21,797 INFO L226 Difference]: Without dead ends: 1389 [2022-11-23 01:53:21,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:53:21,800 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 831 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:21,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 3432 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 01:53:21,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2022-11-23 01:53:21,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 965. [2022-11-23 01:53:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 715 states have (on average 1.3986013986013985) internal successors, (1000), 738 states have internal predecessors, (1000), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-23 01:53:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1404 transitions. [2022-11-23 01:53:21,972 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1404 transitions. Word has length 130 [2022-11-23 01:53:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:21,973 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1404 transitions. [2022-11-23 01:53:21,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 01:53:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1404 transitions. [2022-11-23 01:53:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-23 01:53:21,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:21,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-23 01:53:21,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 01:53:21,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:21,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:21,979 INFO L85 PathProgramCache]: Analyzing trace with hash 863642065, now seen corresponding path program 1 times [2022-11-23 01:53:21,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:21,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117941495] [2022-11-23 01:53:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:21,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:53:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:53:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:53:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 01:53:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:53:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 01:53:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 01:53:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 01:53:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 01:53:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:23,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 01:53:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-23 01:53:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-23 01:53:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-23 01:53:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 01:53:23,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:23,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117941495] [2022-11-23 01:53:23,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117941495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:53:23,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646311810] [2022-11-23 01:53:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:23,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:53:23,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:23,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:53:23,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 01:53:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:23,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-23 01:53:23,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:53:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 01:53:23,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:53:23,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646311810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:23,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:53:23,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 10 [2022-11-23 01:53:23,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626144645] [2022-11-23 01:53:23,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:23,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:53:23,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:53:23,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:53:23,720 INFO L87 Difference]: Start difference. First operand 965 states and 1404 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 01:53:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:24,136 INFO L93 Difference]: Finished difference Result 1912 states and 2797 transitions. [2022-11-23 01:53:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 01:53:24,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-11-23 01:53:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:24,142 INFO L225 Difference]: With dead ends: 1912 [2022-11-23 01:53:24,143 INFO L226 Difference]: Without dead ends: 973 [2022-11-23 01:53:24,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:53:24,146 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 42 mSDsluCounter, 9478 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 10839 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:24,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 10839 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:53:24,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-11-23 01:53:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 967. [2022-11-23 01:53:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 716 states have (on average 1.3980446927374302) internal successors, (1001), 740 states have internal predecessors, (1001), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-23 01:53:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1406 transitions. [2022-11-23 01:53:24,311 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1406 transitions. Word has length 138 [2022-11-23 01:53:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:24,312 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1406 transitions. [2022-11-23 01:53:24,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 01:53:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1406 transitions. [2022-11-23 01:53:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-23 01:53:24,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:24,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:53:24,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 01:53:24,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 01:53:24,527 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:24,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash 708032517, now seen corresponding path program 1 times [2022-11-23 01:53:24,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:24,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393604166] [2022-11-23 01:53:24,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:24,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:53:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:53:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:53:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 01:53:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 01:53:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-23 01:53:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 01:53:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 01:53:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 01:53:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 01:53:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:53:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-23 01:53:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-23 01:53:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 01:53:25,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:25,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393604166] [2022-11-23 01:53:25,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393604166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:25,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:25,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:53:25,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032911815] [2022-11-23 01:53:25,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:53:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:53:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:53:25,284 INFO L87 Difference]: Start difference. First operand 967 states and 1406 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 01:53:29,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:29,765 INFO L93 Difference]: Finished difference Result 2846 states and 4288 transitions. [2022-11-23 01:53:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:53:29,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-11-23 01:53:29,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:29,774 INFO L225 Difference]: With dead ends: 2846 [2022-11-23 01:53:29,775 INFO L226 Difference]: Without dead ends: 1920 [2022-11-23 01:53:29,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:53:29,778 INFO L413 NwaCegarLoop]: 1851 mSDtfsCounter, 1779 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 8375 SdHoareTripleChecker+Invalid, 4115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:29,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 8375 Invalid, 4115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [381 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 01:53:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2022-11-23 01:53:29,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 972. [2022-11-23 01:53:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 720 states have (on average 1.3958333333333333) internal successors, (1005), 744 states have internal predecessors, (1005), 202 states have call successors, (202), 47 states have call predecessors, (202), 49 states have return successors, (207), 201 states have call predecessors, (207), 202 states have call successors, (207) [2022-11-23 01:53:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1414 transitions. [2022-11-23 01:53:29,948 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1414 transitions. Word has length 141 [2022-11-23 01:53:29,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:29,948 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1414 transitions. [2022-11-23 01:53:29,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 01:53:29,949 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1414 transitions. [2022-11-23 01:53:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-23 01:53:29,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:29,954 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:53:29,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 01:53:29,954 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash 879956115, now seen corresponding path program 2 times [2022-11-23 01:53:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:29,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913847326] [2022-11-23 01:53:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:29,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:53:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 01:53:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:53:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 01:53:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 01:53:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-23 01:53:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 01:53:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 01:53:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 01:53:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 01:53:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-23 01:53:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-23 01:53:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-23 01:53:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 01:53:38,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:38,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913847326] [2022-11-23 01:53:38,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913847326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:53:38,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931349252] [2022-11-23 01:53:38,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 01:53:38,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:53:38,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:38,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:53:38,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 01:54:20,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 01:54:20,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:54:20,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 196 conjunts are in the unsatisfiable core [2022-11-23 01:54:20,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:20,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 01:54:21,654 INFO L321 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2022-11-23 01:54:21,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 60 [2022-11-23 01:54:21,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 01:54:22,121 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 01:54:22,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-23 01:54:22,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 01:54:23,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 01:54:23,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 01:54:23,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-23 01:54:23,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 01:54:23,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-23 01:54:23,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 01:54:23,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 01:54:23,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 01:54:23,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-23 01:54:24,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2022-11-23 01:54:24,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2022-11-23 01:54:24,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-23 01:54:24,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-23 01:54:24,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-23 01:54:24,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-23 01:54:24,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 01:54:24,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 01:54:24,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-23 01:54:24,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 01:54:24,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 01:54:24,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-23 01:54:24,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 01:54:24,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 01:54:24,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-23 01:54:25,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-23 01:54:25,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-23 01:54:25,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 01:54:25,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 01:54:25,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-23 01:54:25,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-23 01:54:26,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 437 treesize of output 257 [2022-11-23 01:54:26,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 01:54:26,853 INFO L321 Elim1Store]: treesize reduction 43, result has 27.1 percent of original size [2022-11-23 01:54:26,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 381 treesize of output 254 [2022-11-23 01:54:26,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 01:54:26,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 180 [2022-11-23 01:54:26,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 148 [2022-11-23 01:54:26,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 123 [2022-11-23 01:54:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:54:26,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:54:27,112 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1256 (Array Int Int)) (v_ArrVal_1255 (Array Int Int)) (v_ArrVal_1254 (Array Int Int))) (let ((.cse0 (mod (let ((.cse1 (+ |c_ULTIMATE.start_slip_open_~sl~12#1.offset| 12))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1255) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1254) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)) (+ 112 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1256) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)))) 4294967296))) (or (not (<= .cse0 2147483647)) (< .cse0 1)))) is different from false [2022-11-23 01:54:27,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931349252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:54:27,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 01:54:27,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33] total 59 [2022-11-23 01:54:27,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864010478] [2022-11-23 01:54:27,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 01:54:27,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-23 01:54:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:54:27,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-23 01:54:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3359, Unknown=1, NotChecked=116, Total=3660 [2022-11-23 01:54:27,133 INFO L87 Difference]: Start difference. First operand 972 states and 1414 transitions. Second operand has 59 states, 57 states have (on average 3.6140350877192984) internal successors, (206), 49 states have internal predecessors, (206), 17 states have call successors, (30), 7 states have call predecessors, (30), 11 states have return successors, (29), 21 states have call predecessors, (29), 17 states have call successors, (29) [2022-11-23 01:54:44,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:54:46,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:54:49,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:54:50,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:54:53,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:55:40,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:55:41,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:55:43,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:55:46,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:55:48,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:55:51,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:55:54,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:55:56,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:55:59,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:56:02,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:56:04,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:06,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:08,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:56:12,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:16,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:19,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:22,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:24,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:56:27,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:29,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:31,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:33,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:56:37,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:56:40,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:43,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:45,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:47,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:50,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:56:52,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:53,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:56:55,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:03,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:05,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:07,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:10,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:12,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:57:15,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:17,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:19,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:21,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:22,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:57:24,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:27,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:29,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:57:32,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:34,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:37,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:39,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:41,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:57:43,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:57:45,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 01:58:04,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:58:31,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:58:34,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:58:37,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:58:39,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:58:41,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:58:44,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:58:45,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:58:48,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:58:50,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:59:06,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:59:08,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:59:15,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:59:17,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:59:20,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:59:22,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 01:59:44,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:00:15,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:01:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:01:15,175 INFO L93 Difference]: Finished difference Result 11171 states and 17607 transitions. [2022-11-23 02:01:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-23 02:01:15,176 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 57 states have (on average 3.6140350877192984) internal successors, (206), 49 states have internal predecessors, (206), 17 states have call successors, (30), 7 states have call predecessors, (30), 11 states have return successors, (29), 21 states have call predecessors, (29), 17 states have call successors, (29) Word has length 144 [2022-11-23 02:01:15,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:01:15,243 INFO L225 Difference]: With dead ends: 11171 [2022-11-23 02:01:15,244 INFO L226 Difference]: Without dead ends: 11169 [2022-11-23 02:01:15,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 148 SyntacticMatches, 11 SemanticMatches, 152 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6906 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1695, Invalid=21564, Unknown=1, NotChecked=302, Total=23562 [2022-11-23 02:01:15,254 INFO L413 NwaCegarLoop]: 3616 mSDtfsCounter, 24327 mSDsluCounter, 91670 mSDsCounter, 0 mSdLazyCounter, 163164 mSolverCounterSat, 22888 mSolverCounterUnsat, 56 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 371.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24528 SdHoareTripleChecker+Valid, 95286 SdHoareTripleChecker+Invalid, 186108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.3s SdHoareTripleChecker+Time, 22888 IncrementalHoareTripleChecker+Valid, 163164 IncrementalHoareTripleChecker+Invalid, 56 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 389.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:01:15,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24528 Valid, 95286 Invalid, 186108 Unknown, 0 Unchecked, 1.3s Time], IncrementalHoareTripleChecker [22888 Valid, 163164 Invalid, 56 Unknown, 0 Unchecked, 389.8s Time] [2022-11-23 02:01:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11169 states. [2022-11-23 02:01:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11169 to 3756. [2022-11-23 02:01:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 2784 states have (on average 1.4102011494252873) internal successors, (3926), 2878 states have internal predecessors, (3926), 772 states have call successors, (772), 193 states have call predecessors, (772), 199 states have return successors, (826), 744 states have call predecessors, (826), 772 states have call successors, (826) [2022-11-23 02:01:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5524 transitions. [2022-11-23 02:01:16,522 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5524 transitions. Word has length 144 [2022-11-23 02:01:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:01:16,522 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 5524 transitions. [2022-11-23 02:01:16,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 57 states have (on average 3.6140350877192984) internal successors, (206), 49 states have internal predecessors, (206), 17 states have call successors, (30), 7 states have call predecessors, (30), 11 states have return successors, (29), 21 states have call predecessors, (29), 17 states have call successors, (29) [2022-11-23 02:01:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5524 transitions. [2022-11-23 02:01:16,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-23 02:01:16,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:01:16,549 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:01:16,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:16,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 02:01:16,765 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:01:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:16,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1272591306, now seen corresponding path program 1 times [2022-11-23 02:01:16,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:16,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883401604] [2022-11-23 02:01:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:16,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:01:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:01:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 02:01:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:01:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:01:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 02:01:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 02:01:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 02:01:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 02:01:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 02:01:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 02:01:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:01:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-23 02:01:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-23 02:01:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-23 02:01:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-23 02:01:17,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:17,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883401604] [2022-11-23 02:01:17,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883401604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:17,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:01:17,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:01:17,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360968145] [2022-11-23 02:01:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:17,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:01:17,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:01:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:01:17,268 INFO L87 Difference]: Start difference. First operand 3756 states and 5524 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 02:01:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:01:20,932 INFO L93 Difference]: Finished difference Result 4734 states and 6968 transitions. [2022-11-23 02:01:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:01:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2022-11-23 02:01:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:01:20,950 INFO L225 Difference]: With dead ends: 4734 [2022-11-23 02:01:20,950 INFO L226 Difference]: Without dead ends: 3799 [2022-11-23 02:01:20,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:01:20,955 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 420 mSDsluCounter, 3603 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 4538 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:01:20,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 4538 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 02:01:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2022-11-23 02:01:22,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3752. [2022-11-23 02:01:22,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3752 states, 2781 states have (on average 1.4102840704782453) internal successors, (3922), 2875 states have internal predecessors, (3922), 771 states have call successors, (771), 193 states have call predecessors, (771), 199 states have return successors, (825), 743 states have call predecessors, (825), 771 states have call successors, (825) [2022-11-23 02:01:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 5518 transitions. [2022-11-23 02:01:22,027 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 5518 transitions. Word has length 148 [2022-11-23 02:01:22,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:01:22,027 INFO L495 AbstractCegarLoop]: Abstraction has 3752 states and 5518 transitions. [2022-11-23 02:01:22,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 02:01:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 5518 transitions. [2022-11-23 02:01:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-23 02:01:22,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:01:22,037 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:01:22,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:01:22,037 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:01:22,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:22,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1468998264, now seen corresponding path program 1 times [2022-11-23 02:01:22,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:22,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420620448] [2022-11-23 02:01:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:22,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:01:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:01:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 02:01:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:01:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 02:01:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:01:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 02:01:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:01:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 02:01:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 02:01:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 02:01:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:01:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-23 02:01:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-23 02:01:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 02:01:24,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:24,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420620448] [2022-11-23 02:01:24,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420620448] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:24,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534938059] [2022-11-23 02:01:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:24,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:24,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:24,364 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:24,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:01:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:26,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-23 02:01:26,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:26,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-11-23 02:01:26,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-23 02:01:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:01:26,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:01:26,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534938059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:26,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:01:26,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 17 [2022-11-23 02:01:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983457684] [2022-11-23 02:01:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:26,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 02:01:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:26,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 02:01:26,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:01:26,702 INFO L87 Difference]: Start difference. First operand 3752 states and 5518 transitions. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 13 states have internal predecessors, (114), 4 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 02:01:33,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:35,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:36,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:40,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:42,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:45,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:48,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:55,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:57,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:01:59,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:01,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:03,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:06,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:10,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:11,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:13,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:16,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:25,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:27,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:29,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:33,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:02:45,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:02:45,487 INFO L93 Difference]: Finished difference Result 23168 states and 36358 transitions. [2022-11-23 02:02:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 02:02:45,488 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 13 states have internal predecessors, (114), 4 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 147 [2022-11-23 02:02:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:02:45,576 INFO L225 Difference]: With dead ends: 23168 [2022-11-23 02:02:45,576 INFO L226 Difference]: Without dead ends: 19456 [2022-11-23 02:02:45,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 174 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=282, Invalid=1698, Unknown=0, NotChecked=0, Total=1980 [2022-11-23 02:02:45,594 INFO L413 NwaCegarLoop]: 2590 mSDtfsCounter, 7229 mSDsluCounter, 26914 mSDsCounter, 0 mSdLazyCounter, 16817 mSolverCounterSat, 3695 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7234 SdHoareTripleChecker+Valid, 29504 SdHoareTripleChecker+Invalid, 20524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3695 IncrementalHoareTripleChecker+Valid, 16817 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:02:45,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7234 Valid, 29504 Invalid, 20524 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3695 Valid, 16817 Invalid, 12 Unknown, 0 Unchecked, 69.2s Time] [2022-11-23 02:02:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19456 states. [2022-11-23 02:02:47,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19456 to 5537. [2022-11-23 02:02:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5537 states, 4100 states have (on average 1.4126829268292682) internal successors, (5792), 4237 states have internal predecessors, (5792), 1130 states have call successors, (1130), 297 states have call predecessors, (1130), 306 states have return successors, (1225), 1079 states have call predecessors, (1225), 1130 states have call successors, (1225) [2022-11-23 02:02:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 8147 transitions. [2022-11-23 02:02:47,484 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 8147 transitions. Word has length 147 [2022-11-23 02:02:47,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:02:47,484 INFO L495 AbstractCegarLoop]: Abstraction has 5537 states and 8147 transitions. [2022-11-23 02:02:47,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 13 states have internal predecessors, (114), 4 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 02:02:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 8147 transitions. [2022-11-23 02:02:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-23 02:02:47,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:02:47,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:02:47,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:02:47,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 02:02:47,715 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:02:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:02:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1279073080, now seen corresponding path program 1 times [2022-11-23 02:02:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:02:47,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202065521] [2022-11-23 02:02:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:02:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:02:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:47,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:02:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-23 02:02:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 02:02:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:02:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 02:02:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 02:02:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 02:02:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 02:02:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 02:02:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 02:02:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-23 02:02:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-23 02:02:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-23 02:02:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-23 02:02:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-23 02:02:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 02:02:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:02:48,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202065521] [2022-11-23 02:02:48,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202065521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:02:48,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878464494] [2022-11-23 02:02:48,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:02:48,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:02:48,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:02:48,071 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:02:48,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:02:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:48,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:02:48,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:02:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 02:02:48,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:02:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 02:02:49,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878464494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:02:49,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:02:49,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2022-11-23 02:02:49,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463626256] [2022-11-23 02:02:49,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:02:49,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:02:49,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:02:49,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:02:49,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:02:49,145 INFO L87 Difference]: Start difference. First operand 5537 states and 8147 transitions. Second operand has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 10 states have internal predecessors, (200), 7 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-23 02:03:01,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:01,234 INFO L93 Difference]: Finished difference Result 18906 states and 29062 transitions. [2022-11-23 02:03:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:03:01,235 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 10 states have internal predecessors, (200), 7 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 156 [2022-11-23 02:03:01,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:01,295 INFO L225 Difference]: With dead ends: 18906 [2022-11-23 02:03:01,295 INFO L226 Difference]: Without dead ends: 13409 [2022-11-23 02:03:01,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:03:01,315 INFO L413 NwaCegarLoop]: 1402 mSDtfsCounter, 6145 mSDsluCounter, 5099 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 2250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 6501 SdHoareTripleChecker+Invalid, 8251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2250 IncrementalHoareTripleChecker+Valid, 6001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:01,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6560 Valid, 6501 Invalid, 8251 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2250 Valid, 6001 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 02:03:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13409 states. [2022-11-23 02:03:03,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13409 to 5677. [2022-11-23 02:03:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 4225 states have (on average 1.413491124260355) internal successors, (5972), 4362 states have internal predecessors, (5972), 1145 states have call successors, (1145), 297 states have call predecessors, (1145), 306 states have return successors, (1240), 1094 states have call predecessors, (1240), 1145 states have call successors, (1240) [2022-11-23 02:03:03,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 8357 transitions. [2022-11-23 02:03:03,123 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 8357 transitions. Word has length 156 [2022-11-23 02:03:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:03,123 INFO L495 AbstractCegarLoop]: Abstraction has 5677 states and 8357 transitions. [2022-11-23 02:03:03,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 10 states have internal predecessors, (200), 7 states have call successors, (40), 4 states have call predecessors, (40), 3 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-23 02:03:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 8357 transitions. [2022-11-23 02:03:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-23 02:03:03,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:03,139 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:03:03,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-23 02:03:03,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 02:03:03,348 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:03,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1856477993, now seen corresponding path program 1 times [2022-11-23 02:03:03,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:03:03,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057095775] [2022-11-23 02:03:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:03,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:03:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:03:03,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:03:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:03:04,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:03:04,331 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:03:04,332 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 02:03:04,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 02:03:04,338 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:03:04,345 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:03:04,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:03:04 BoogieIcfgContainer [2022-11-23 02:03:04,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:03:04,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:03:04,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:03:04,535 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:03:04,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:44" (3/4) ... [2022-11-23 02:03:04,540 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 02:03:04,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:03:04,541 INFO L158 Benchmark]: Toolchain (without parser) took 625717.23ms. Allocated memory was 195.0MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 150.2MB in the beginning and 822.5MB in the end (delta: -672.3MB). Peak memory consumption was 724.4MB. Max. memory is 16.1GB. [2022-11-23 02:03:04,541 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:03:04,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1863.07ms. Allocated memory is still 195.0MB. Free memory was 150.2MB in the beginning and 107.3MB in the end (delta: 43.0MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2022-11-23 02:03:04,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 185.50ms. Allocated memory is still 195.0MB. Free memory was 107.3MB in the beginning and 91.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 02:03:04,542 INFO L158 Benchmark]: Boogie Preprocessor took 216.17ms. Allocated memory is still 195.0MB. Free memory was 91.5MB in the beginning and 128.3MB in the end (delta: -36.7MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2022-11-23 02:03:04,542 INFO L158 Benchmark]: RCFGBuilder took 3727.11ms. Allocated memory was 195.0MB in the beginning and 327.2MB in the end (delta: 132.1MB). Free memory was 128.3MB in the beginning and 203.4MB in the end (delta: -75.2MB). Peak memory consumption was 109.4MB. Max. memory is 16.1GB. [2022-11-23 02:03:04,543 INFO L158 Benchmark]: TraceAbstraction took 619709.88ms. Allocated memory was 327.2MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 203.4MB in the beginning and 822.5MB in the end (delta: -619.1MB). Peak memory consumption was 643.4MB. Max. memory is 16.1GB. [2022-11-23 02:03:04,543 INFO L158 Benchmark]: Witness Printer took 5.58ms. Allocated memory is still 1.6GB. Free memory is still 822.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:03:04,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1863.07ms. Allocated memory is still 195.0MB. Free memory was 150.2MB in the beginning and 107.3MB in the end (delta: 43.0MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 185.50ms. Allocated memory is still 195.0MB. Free memory was 107.3MB in the beginning and 91.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 216.17ms. Allocated memory is still 195.0MB. Free memory was 91.5MB in the beginning and 128.3MB in the end (delta: -36.7MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * RCFGBuilder took 3727.11ms. Allocated memory was 195.0MB in the beginning and 327.2MB in the end (delta: 132.1MB). Free memory was 128.3MB in the beginning and 203.4MB in the end (delta: -75.2MB). Peak memory consumption was 109.4MB. Max. memory is 16.1GB. * TraceAbstraction took 619709.88ms. Allocated memory was 327.2MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 203.4MB in the beginning and 822.5MB in the end (delta: -619.1MB). Peak memory consumption was 643.4MB. Max. memory is 16.1GB. * Witness Printer took 5.58ms. Allocated memory is still 1.6GB. Free memory is still 822.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 7129]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 4873, overapproximation of shiftRight at line 4735, overapproximation of bitwiseAnd at line 4735. Possible FailurePath: [L5034] static struct net_device **slip_devs ; [L5035] static int slip_maxdev = 256; [L5850-L5853] static struct net_device_ops const sl_netdev_ops = {& sl_init, & sl_uninit, & sl_open, & sl_close, & sl_xmit, 0, 0, 0, 0, 0, 0, & sl_ioctl, 0, & sl_change_mtu, 0, & sl_tx_timeout, & sl_get_stats64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L6723-L6726] static struct tty_ldisc_ops sl_ldisc = {21507, (char *)"slip", 0, 0, & slip_open, & slip_close, 0, 0, 0, 0, & slip_ioctl, & slip_compat_ioctl, 0, 0, & slip_hangup, & slip_receive_buf, & slip_write_wakeup, 0, & __this_module, 0}; [L6910] int LDV_IN_INTERRUPT ; VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L6913] int res_sl_init_14 ; [L6914] int res_sl_open_11 ; [L6915] int res_sl_close_10 ; [L6916] struct sk_buff *var_group2 ; [L6917] struct rtnl_link_stats64 var_group3 ; [L6918] int var_sl_change_mtu_12_p1 ; [L6919] struct ifreq var_group4 ; [L6920] int var_sl_ioctl_30_p2 ; [L6921] struct tty_struct var_group5 ; [L6922] int res_slip_open_21 ; [L6923] struct file *var_group6 ; [L6924] unsigned int var_slip_ioctl_28_p2 ; [L6925] unsigned long var_slip_ioctl_28_p3 ; [L6926] unsigned int var_slip_compat_ioctl_29_p2 ; [L6927] unsigned long var_slip_compat_ioctl_29_p3 ; [L6928] unsigned char const *var_slip_receive_buf_18_p1 ; [L6929] char *var_slip_receive_buf_18_p2 ; [L6930] int var_slip_receive_buf_18_p3 ; [L6931] unsigned long var_sl_keepalive_34_p0 ; [L6932] unsigned long var_sl_outfill_33_p0 ; [L6933] int ldv_s_sl_netdev_ops_net_device_ops ; [L6934] int ldv_s_sl_ldisc_tty_ldisc_ops ; [L6935] int tmp ; [L6936] int tmp___0 ; [L6937] int tmp___1 ; VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, var_group3={18446744073709547526:0}, var_group4={18446744073709547525:0}, var_group5={18446744073709547524:0}] [L6939] CALL, EXPR dev_alloc_skb(1U) VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, unknown-#in~arg0-unknown=1] [L7186] CALL, EXPR ldv_malloc(sizeof(struct sk_buff)) VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, unknown-#in~size-unknown=243] [L4847] COND FALSE !(__VERIFIER_nondet_int()) [L4852] return ((void *)0); VAL [\result={0:0}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=0, size=243, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, unknown-#in~size-unknown=243] [L7186] RET, EXPR ldv_malloc(sizeof(struct sk_buff)) VAL [__this_module={18446744073709551591:18446744073709551593}, arg0=1, LDV_IN_INTERRUPT=0, ldv_malloc(sizeof(struct sk_buff))={0:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, unknown-#in~arg0-unknown=1] [L7186] return ldv_malloc(sizeof(struct sk_buff)); [L6939] RET, EXPR dev_alloc_skb(1U) VAL [__this_module={18446744073709551591:18446744073709551593}, dev_alloc_skb(1U)={0:0}, LDV_IN_INTERRUPT=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, var_group3={18446744073709547526:0}, var_group4={18446744073709547525:0}, var_group5={18446744073709547524:0}] [L6939] var_group2 = dev_alloc_skb(1U) [L6940] ldv_s_sl_netdev_ops_net_device_ops = 0 [L6941] ldv_s_sl_ldisc_tty_ldisc_ops = 0 [L6942] LDV_IN_INTERRUPT = 1 [L6943] FCALL ldv_initialize() [L6944] FCALL ldv_handler_precall() VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, var_group2={0:0}, var_group3={18446744073709547526:0}, var_group4={18446744073709547525:0}, var_group5={18446744073709547524:0}] [L6945] CALL, EXPR slip_init() [L6729] int status ; [L6730] void *tmp ; VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L6732] COND FALSE !(slip_maxdev <= 3) VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L6740] CALL, EXPR kzalloc((unsigned long )slip_maxdev * 8UL, 208U) [L4871] void *tmp ; VAL [__this_module={18446744073709551591:18446744073709551593}, flags=208, LDV_IN_INTERRUPT=1, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, unknown-#in~flags-unknown=208, unknown-#in~size-unknown=2048] [L4873] CALL, EXPR kmalloc(size, flags | 32768U) VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4862] void *tmp___2 ; [L4864] CALL, EXPR __kmalloc(size, flags) [L4857] CALL, EXPR ldv_malloc(size) VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4847] COND TRUE __VERIFIER_nondet_int() [L4848] void *res = malloc(size); [L4849] CALL, EXPR ldv_is_err(res) [L4843] return ((unsigned long)ptr > ((unsigned long)-4095)); VAL [#in~ptr={18446744073709547521:0}, \result=0, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, ptr={18446744073709547521:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256] [L4849] RET, EXPR ldv_is_err(res) [L4849] CALL assume_abort_if_not(!ldv_is_err(res)) [L4838] COND FALSE !(!cond) VAL [__this_module={18446744073709551591:18446744073709551593}, cond=1, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, unknown-#in~cond-unknown=1] [L4849] RET assume_abort_if_not(!ldv_is_err(res)) [L4850] return res; VAL [\result={18446744073709547521:0}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, res={18446744073709547521:0}, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, unknown-#in~size-unknown=2048] [L4857] RET, EXPR ldv_malloc(size) VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, ldv_malloc(size)={18446744073709547521:0}, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, t=32768, unknown-#in~size-unknown=2048, unknown-#in~t-unknown=32768] [L4857] return ldv_malloc(size); [L4864] RET, EXPR __kmalloc(size, flags) [L4864] tmp___2 = __kmalloc(size, flags) [L4865] return (tmp___2); VAL [\result={18446744073709547521:0}, __this_module={18446744073709551591:18446744073709551593}, flags=32768, LDV_IN_INTERRUPT=1, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, tmp___2={18446744073709547521:0}, unknown-#in~flags-unknown=32768, unknown-#in~size-unknown=2048] [L4873] RET, EXPR kmalloc(size, flags | 32768U) VAL [__this_module={18446744073709551591:18446744073709551593}, flags=208, kmalloc(size, flags | 32768U)={18446744073709547521:0}, LDV_IN_INTERRUPT=1, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, unknown-#in~flags-unknown=208, unknown-#in~size-unknown=2048] [L4873] tmp = kmalloc(size, flags | 32768U) [L4874] return (tmp); VAL [\result={18446744073709547521:0}, __this_module={18446744073709551591:18446744073709551593}, flags=208, LDV_IN_INTERRUPT=1, size=2048, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={0:0}, slip_maxdev=256, tmp={18446744073709547521:0}, unknown-#in~flags-unknown=208, unknown-#in~size-unknown=2048] [L6740] RET, EXPR kzalloc((unsigned long )slip_maxdev * 8UL, 208U) [L6740] tmp = kzalloc((unsigned long )slip_maxdev * 8UL, 208U) [L6741] slip_devs = (struct net_device **)tmp VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp={18446744073709547521:0}] [L6742] COND FALSE !((unsigned long )slip_devs == (unsigned long )((struct net_device **)0)) [L6747] CALL, EXPR tty_register_ldisc(1, & sl_ldisc) [L7287] return __VERIFIER_nondet_int(); [L6747] RET, EXPR tty_register_ldisc(1, & sl_ldisc) [L6747] status = tty_register_ldisc(1, & sl_ldisc) [L6748] COND FALSE !(status != 0) VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, status=0, tmp={18446744073709547521:0}] [L6753] return (status); VAL [\result=0, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, status=0, tmp={18446744073709547521:0}] [L6945] RET, EXPR slip_init() [L6945] tmp = slip_init() [L6946] COND FALSE !(tmp != 0) VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=0, var_group2={0:0}, var_group3={18446744073709547526:0}, var_group4={18446744073709547525:0}, var_group5={18446744073709547524:0}] [L7076] tmp___1 = __VERIFIER_nondet_int() [L7077] COND TRUE (tmp___1 != 0 || ldv_s_sl_netdev_ops_net_device_ops != 0) || ldv_s_sl_ldisc_tty_ldisc_ops != 0 VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=0, tmp___1=-2, var_group2={0:0}, var_group3={18446744073709547526:0}, var_group4={18446744073709547525:0}, var_group5={18446744073709547524:0}] [L6952] tmp___0 = __VERIFIER_nondet_int() [L6954] case 0: [L6967] case 1: [L6980] case 2: [L6993] case 3: [L7001] case 4: [L7005] case 5: [L7009] case 6: [L7013] case 7: [L7017] case 8: [L7021] case 9: VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=0, tmp___0=9, tmp___1=-2, var_group2={0:0}, var_group3={18446744073709547526:0}, var_group4={18446744073709547525:0}, var_group5={18446744073709547524:0}] [L7022] COND TRUE ldv_s_sl_ldisc_tty_ldisc_ops == 0 VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=0, tmp___0=9, tmp___1=-2, var_group2={0:0}, var_group3={18446744073709547526:0}, var_group4={18446744073709547525:0}, var_group5={18446744073709547524:0}] [L7023] FCALL ldv_handler_precall() VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, ldv_s_sl_ldisc_tty_ldisc_ops=0, ldv_s_sl_netdev_ops_net_device_ops=0, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=0, tmp___0=9, tmp___1=-2, var_group2={0:0}, var_group3={18446744073709547526:0}, var_group4={18446744073709547525:0}, var_group5={18446744073709547524:0}] [L7024] CALL ldv_slip_open_3(&var_group5) [L7117] ldv_func_ret_type___1 ldv_func_res ; [L7118] int tmp ; [L7120] CALL, EXPR slip_open(tty) [L6037] struct slip *sl ; [L6038] int err ; [L6039] int tmp ; [L6040] dev_t tmp___0 ; [L6041] struct task_struct *tmp___1 ; [L6042] int tmp___2 ; [L6044] CALL, EXPR capable(12) [L7172] return __VERIFIER_nondet_int(); [L6044] RET, EXPR capable(12) [L6044] tmp = capable(12) [L6045] COND FALSE !(tmp == 0) [L6049] EXPR tty->ops [L6049] EXPR (tty->ops)->write VAL [#in~tty={18446744073709547524:0}, (tty->ops)->write={30:-29}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tty={18446744073709547524:0}, tty->ops={18446744073709551586:-3}] [L6049-L6051] COND FALSE !((unsigned long )(tty->ops)->write == (unsigned long )((int (* )(struct tty_struct * , unsigned char const * , int ))0)) [L6055] FCALL rtnl_lock() [L6056] CALL sl_sync() [L5925] int i ; [L5926] struct net_device *dev ; [L5927] struct slip *sl ; [L5928] void *tmp ; [L5930] i = 0 VAL [__this_module={18446744073709551591:18446744073709551593}, i=0, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L5951] COND TRUE i < slip_maxdev VAL [__this_module={18446744073709551591:18446744073709551593}, i=0, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L5933] EXPR slip_devs + (unsigned long )i [L5933] dev = *(slip_devs + (unsigned long )i) [L5934] COND FALSE !((unsigned long )dev == (unsigned long )((struct net_device *)0)) VAL [__this_module={18446744073709551591:18446744073709551593}, dev={2509:-2508}, i=0, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L5938] CALL, EXPR netdev_priv((struct net_device const *)dev) VAL [#in~dev={2509:-2508}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L4903] return ((void *)dev + 2496U); VAL [#in~dev={2509:-2508}, \result={2509:-12}, __this_module={18446744073709551591:18446744073709551593}, dev={2509:-2508}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L5938] RET, EXPR netdev_priv((struct net_device const *)dev) VAL [__this_module={18446744073709551591:18446744073709551593}, dev={2509:-2508}, i=0, LDV_IN_INTERRUPT=1, netdev_priv((struct net_device const *)dev)={2509:-12}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L5938] tmp = netdev_priv((struct net_device const *)dev) [L5939] sl = (struct slip *)tmp [L5940] EXPR sl->tty [L5940] (unsigned long )sl->tty != (unsigned long )((struct tty_struct *)0) || (unsigned int )sl->leased != 0U VAL [(unsigned long )sl->tty != (unsigned long )((struct tty_struct *)0) || (unsigned int )sl->leased != 0U=1, __this_module={18446744073709551591:18446744073709551593}, dev={2509:-2508}, i=0, LDV_IN_INTERRUPT=1, sl={2509:-12}, sl->tty={31:-30}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp={2509:-12}] [L5940] COND TRUE (unsigned long )sl->tty != (unsigned long )((struct tty_struct *)0) || (unsigned int )sl->leased != 0U [L5949] i = i + 1 VAL [__this_module={18446744073709551591:18446744073709551593}, dev={2509:-2508}, i=1, LDV_IN_INTERRUPT=1, sl={2509:-12}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp={2509:-12}] [L5951] COND TRUE i < slip_maxdev VAL [__this_module={18446744073709551591:18446744073709551593}, dev={2509:-2508}, i=1, LDV_IN_INTERRUPT=1, sl={2509:-12}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp={2509:-12}] [L5933] EXPR slip_devs + (unsigned long )i [L5933] dev = *(slip_devs + (unsigned long )i) [L5934] COND TRUE (unsigned long )dev == (unsigned long )((struct net_device *)0) VAL [__this_module={18446744073709551591:18446744073709551593}, dev={18446744073709551581:35}, i=1, LDV_IN_INTERRUPT=1, sl={2509:-12}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp={2509:-12}] [L6056] RET sl_sync() [L6057] EXPR tty->disc_data [L6057] sl = (struct slip *)tty->disc_data [L6058] err = -17 [L6059] (unsigned long )sl != (unsigned long )((struct slip *)0) && sl->magic == 21250 [L6059] EXPR sl->magic [L6059] (unsigned long )sl != (unsigned long )((struct slip *)0) && sl->magic == 21250 VAL [#in~tty={18446744073709547524:0}, (unsigned long )sl != (unsigned long )((struct slip *)0) && sl->magic == 21250=0, __this_module={18446744073709551591:18446744073709551593}, err=-17, LDV_IN_INTERRUPT=1, sl={-32:33}, sl->magic=18446744073709551589, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tty={18446744073709547524:0}] [L6059] COND FALSE !((unsigned long )sl != (unsigned long )((struct slip *)0) && sl->magic == 21250) [L6063] err = -23 VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, err=-23, LDV_IN_INTERRUPT=1, sl={-32:33}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tty={18446744073709547524:0}] [L6064] CALL, EXPR tty_devnum(tty) VAL [#in~arg0={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L7276] return __VERIFIER_nondet_uint(); [L6064] RET, EXPR tty_devnum(tty) VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, err=-23, LDV_IN_INTERRUPT=1, sl={-32:33}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tty={18446744073709547524:0}, tty_devnum(tty)=18446744073709551606] [L6064] tmp___0 = tty_devnum(tty) [L6065] CALL, EXPR sl_alloc(tmp___0) [L5961] int i ; [L5962] struct net_device *dev ; [L5963] struct slip *sl ; [L5964] void *tmp ; [L5965] int tmp___0 ; [L5966] char name[16U] ; [L5967] void *tmp___1 ; [L5968] struct lock_class_key __key ; [L5969] struct lock_class_key __key___0 ; [L5970] struct lock_class_key __key___1 ; [L5972] dev = 0 VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={0:0}, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L5973] COND FALSE !((unsigned long )slip_devs == (unsigned long )((struct net_device **)0)) [L5977] i = 0 VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={0:0}, i=0, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L5987] COND TRUE i < slip_maxdev VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={0:0}, i=0, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L5980] EXPR slip_devs + (unsigned long )i [L5980] dev = *(slip_devs + (unsigned long )i) [L5981] COND FALSE !((unsigned long )dev == (unsigned long )((struct net_device *)0)) [L5985] i = i + 1 VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={2509:-2508}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L5987] COND TRUE i < slip_maxdev VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={2509:-2508}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L5980] EXPR slip_devs + (unsigned long )i [L5980] dev = *(slip_devs + (unsigned long )i) [L5981] COND TRUE (unsigned long )dev == (unsigned long )((struct net_device *)0) VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={18446744073709551581:35}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L5992] COND FALSE !(i >= slip_maxdev) VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={18446744073709551581:35}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L5996] COND FALSE !((unsigned long )dev != (unsigned long )((struct net_device *)0)) VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={18446744073709551581:35}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L6008] COND TRUE (unsigned long )dev == (unsigned long )((struct net_device *)0) [L6010] CALL, EXPR alloc_netdev_mqs(472, (char const *)(& name), & sl_setup, 1U, 1U) [L7168] CALL, EXPR ldv_malloc(sizeof(struct net_device)) VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L4847] COND TRUE __VERIFIER_nondet_int() [L4848] void *res = malloc(size); [L4849] CALL, EXPR ldv_is_err(res) [L4843] return ((unsigned long)ptr > ((unsigned long)-4095)); VAL [#in~ptr={-4095:0}, \result=0, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, ptr={-4095:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L4849] RET, EXPR ldv_is_err(res) [L4849] CALL assume_abort_if_not(!ldv_is_err(res)) [L4838] COND FALSE !(!cond) VAL [__this_module={18446744073709551591:18446744073709551593}, cond=1, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~cond-unknown=1] [L4849] RET assume_abort_if_not(!ldv_is_err(res)) [L4850] return res; VAL [\result={-4095:0}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, res={-4095:0}, size=2255, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~size-unknown=2255] [L7168] RET, EXPR ldv_malloc(sizeof(struct net_device)) VAL [#in~arg1={18446744073709547527:0}, #in~arg2={-1:10}, __this_module={18446744073709551591:18446744073709551593}, arg0=472, arg1={18446744073709547527:0}, arg2={-1:10}, arg3=1, arg4=1, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct net_device))={-4095:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~arg0-unknown=472, unknown-#in~arg3-unknown=1, unknown-#in~arg4-unknown=1] [L7168] return ldv_malloc(sizeof(struct net_device)); [L6010] RET, EXPR alloc_netdev_mqs(472, (char const *)(& name), & sl_setup, 1U, 1U) [L6010] dev = alloc_netdev_mqs(472, (char const *)(& name), & sl_setup, 1U, 1U) [L6011] COND FALSE !((unsigned long )dev == (unsigned long )((struct net_device *)0)) [L6015] dev->base_addr = (unsigned long )i VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={-4095:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L6018] CALL, EXPR netdev_priv((struct net_device const *)dev) VAL [#in~dev={-4095:0}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L4903] return ((void *)dev + 2496U); VAL [#in~dev={-4095:0}, \result={-4095:2496}, __this_module={18446744073709551591:18446744073709551593}, dev={-4095:0}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L6018] RET, EXPR netdev_priv((struct net_device const *)dev) VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={-4095:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, netdev_priv((struct net_device const *)dev)={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~line-unknown=18446744073709551606] [L6018] tmp___1 = netdev_priv((struct net_device const *)dev) [L6019] sl = (struct slip *)tmp___1 [L6020] sl->magic = 21250 [L6021] sl->dev = dev [L6022] CALL spinlock_check(& sl->lock) [L4778] return (& lock->ldv_5934.rlock); VAL [#in~lock={-4095:2516}, \result={-4095:2516}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, lock={-4095:2516}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L6022] RET spinlock_check(& sl->lock) [L6023] FCALL __raw_spin_lock_init(& sl->lock.ldv_5934.rlock, "&(&sl->lock)->rlock", & __key) [L6024] sl->mode = 8U VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={-4095:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp___1={-4095:2496}, unknown-#in~line-unknown=18446744073709551606] [L6025] FCALL init_timer_key(& sl->keepalive_timer, "&sl->keepalive_timer", & __key___0) VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={-4095:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp___1={-4095:2496}, unknown-#in~line-unknown=18446744073709551606] [L6026] sl->keepalive_timer.data = (unsigned long )sl [L6027] sl->keepalive_timer.function = & sl_keepalive VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={-4095:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp___1={-4095:2496}, unknown-#in~line-unknown=18446744073709551606] [L6028] FCALL init_timer_key(& sl->outfill_timer, "&sl->outfill_timer", & __key___1) VAL [__key={18446744073709547523:0}, __key___0={18446744073709547528:0}, __key___1={18446744073709547529:0}, __this_module={18446744073709551591:18446744073709551593}, dev={-4095:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, name={18446744073709547527:0}, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp___1={-4095:2496}, unknown-#in~line-unknown=18446744073709551606] [L6029] sl->outfill_timer.data = (unsigned long )sl [L6030] sl->outfill_timer.function = & sl_outfill [L6031] *(slip_devs + (unsigned long )i) = dev [L6032] return (sl); [L6032] return (sl); [L6032] return (sl); [L6032] return (sl); [L6032] return (sl); VAL [\result={-4095:2496}, __this_module={18446744073709551591:18446744073709551593}, dev={-4095:0}, i=1, LDV_IN_INTERRUPT=1, line=4294967286, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp___1={-4095:2496}, unknown-#in~line-unknown=18446744073709551606] [L6065] RET, EXPR sl_alloc(tmp___0) [L6065] sl = sl_alloc(tmp___0) [L6066] COND FALSE !((unsigned long )sl == (unsigned long )((struct slip *)0)) [L6070] sl->tty = tty [L6071] tty->disc_data = (void *)sl VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, err=-23, LDV_IN_INTERRUPT=1, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tmp___0=4294967286, tty={18446744073709547524:0}] [L6072] CALL, EXPR tty_devnum(tty) VAL [#in~arg0={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L7276] return __VERIFIER_nondet_uint(); [L6072] RET, EXPR tty_devnum(tty) VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, err=-23, LDV_IN_INTERRUPT=1, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tmp___0=4294967286, tty={18446744073709547524:0}, tty_devnum(tty)=18446744073709551587] [L6072] sl->line = tty_devnum(tty) [L6073] CALL, EXPR get_current() VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L4746] struct task_struct *pfo_ret__ ; [L4749] case 1UL: [L4752] case 2UL: [L4755] case 4UL: [L4758] case 8UL: VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L4765] return (pfo_ret__); VAL [\result={18446744073709551597:-4}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, pfo_ret__={18446744073709551597:-4}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] [L6073] RET, EXPR get_current() VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, err=-23, get_current()={18446744073709551597:-4}, LDV_IN_INTERRUPT=1, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tmp___0=4294967286, tty={18446744073709547524:0}] [L6073] tmp___1 = get_current() [L6074] EXPR tmp___1->pid [L6074] sl->pid = tmp___1->pid [L6075] CALL, EXPR constant_test_bit(0U, (unsigned long const volatile *)(& sl->flags)) VAL [#in~addr={-4095:2668}, __this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, unknown-#in~nr-unknown=0] [L4735] EXPR addr + (unsigned long )(nr / 64U) [L4735] return ((int )((unsigned long )*(addr + (unsigned long )(nr / 64U)) >> ((int )nr & 63)) & 1); [L6075] RET, EXPR constant_test_bit(0U, (unsigned long const volatile *)(& sl->flags)) VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, constant_test_bit(0U, (unsigned long const volatile *)(& sl->flags))=42, err=-23, LDV_IN_INTERRUPT=1, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tmp___0=4294967286, tmp___1={18446744073709551597:-4}, tty={18446744073709547524:0}] [L6075] tmp___2 = constant_test_bit(0U, (unsigned long const volatile *)(& sl->flags)) [L6076] COND FALSE !(tmp___2 == 0) VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, err=-23, LDV_IN_INTERRUPT=1, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tmp___0=4294967286, tmp___1={18446744073709551597:-4}, tmp___2=42, tty={18446744073709547524:0}] [L6090] EXPR sl->keepalive VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, err=-23, LDV_IN_INTERRUPT=1, sl={-4095:2496}, sl->keepalive=512, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tmp___0=4294967286, tmp___1={18446744073709551597:-4}, tmp___2=42, tty={18446744073709547524:0}] [L6090] COND FALSE !((unsigned int )sl->keepalive != 0U) [L6095] EXPR sl->outfill VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, err=-23, LDV_IN_INTERRUPT=1, sl={-4095:2496}, sl->outfill=768, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tmp___0=4294967286, tmp___1={18446744073709551597:-4}, tmp___2=42, tty={18446744073709547524:0}] [L6095] COND FALSE !((unsigned int )sl->outfill != 0U) [L6100] FCALL rtnl_unlock() VAL [#in~tty={18446744073709547524:0}, __this_module={18446744073709551591:18446744073709551593}, err=-23, LDV_IN_INTERRUPT=1, sl={-4095:2496}, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256, tmp=1, tmp___0=4294967286, tmp___1={18446744073709551597:-4}, tmp___2=42, tty={18446744073709547524:0}] [L6101] tty->receive_room = 65536U [L6102] EXPR sl->dev [L6102] EXPR (sl->dev)->base_addr [L6102] return ((int )(sl->dev)->base_addr); [L7120] RET, EXPR slip_open(tty) [L7120] tmp = slip_open(tty) [L7121] ldv_func_res = tmp [L7122] CALL ldv_check_callback_ret_val(ldv_func_res) [L7135] COND FALSE !(ret_val <= 0) [L7137] CALL ldv_error() [L7129] reach_error() VAL [__this_module={18446744073709551591:18446744073709551593}, LDV_IN_INTERRUPT=1, sl_ldisc={29:0}, sl_netdev_ops={28:0}, slip_devs={18446744073709547521:0}, slip_maxdev=256] - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 964 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 619.4s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 537.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 mSolverCounterUnknown, 61612 SdHoareTripleChecker+Valid, 497.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58859 mSDsluCounter, 199156 SdHoareTripleChecker+Invalid, 471.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 171552 mSDsCounter, 34616 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 212155 IncrementalHoareTripleChecker+Invalid, 246839 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34616 mSolverCounterUnsat, 27604 mSDtfsCounter, 212155 mSolverCounterSat, 2.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1762 GetRequests, 1449 SyntacticMatches, 18 SemanticMatches, 295 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7393 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5677occurred in iteration=17, InterpolantAutomatonStates: 230, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.9s AutomataMinimizationTime, 17 MinimizatonAttempts, 36281 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 45.6s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 2858 NumberOfCodeBlocks, 2858 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2943 ConstructedInterpolants, 25 QuantifiedInterpolants, 11130 SizeOfPredicates, 84 NumberOfNonLiveVariables, 7079 ConjunctsInSsa, 294 ConjunctsInUnsatCore, 25 InterpolantComputations, 14 PerfectInterpolantSequences, 377/405 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 02:03:04,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS --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 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:03:07,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:03:07,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:03:07,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:03:07,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:03:07,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:03:07,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:03:07,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:03:07,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:03:07,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:03:07,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:03:07,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:03:07,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:03:07,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:03:07,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:03:07,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:03:07,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:03:07,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:03:07,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:03:07,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:03:07,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:03:07,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:03:07,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:03:07,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:03:07,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:03:07,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:03:07,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:03:07,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:03:07,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:03:07,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:03:07,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:03:07,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:03:07,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:03:07,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:03:07,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:03:07,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:03:07,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:03:07,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:03:07,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:03:07,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:03:07,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:03:07,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-23 02:03:07,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:03:07,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:03:07,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:03:07,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:03:07,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:03:07,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:03:07,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:03:07,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:03:07,465 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:03:07,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:03:07,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:03:07,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:03:07,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:03:07,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:03:07,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:03:07,469 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 02:03:07,469 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 02:03:07,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:03:07,470 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:03:07,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:03:07,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:03:07,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:03:07,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:03:07,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:03:07,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:03:07,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:03:07,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:03:07,473 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 02:03:07,474 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 02:03:07,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:03:07,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:03:07,475 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:03:07,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:03:07,476 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 02:03:07,476 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-11-23 02:03:07,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:03:08,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:03:08,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:03:08,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:03:08,007 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:03:08,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-23 02:03:11,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:03:12,015 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:03:12,016 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-23 02:03:12,065 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/data/6990dabb3/dce4e2b17066432486452d6128706f25/FLAG7fbaa2b8f [2022-11-23 02:03:12,095 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/data/6990dabb3/dce4e2b17066432486452d6128706f25 [2022-11-23 02:03:12,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:03:12,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:03:12,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:03:12,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:03:12,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:03:12,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:03:12" (1/1) ... [2022-11-23 02:03:12,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c957f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:12, skipping insertion in model container [2022-11-23 02:03:12,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:03:12" (1/1) ... [2022-11-23 02:03:12,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:03:12,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:03:13,764 WARN L237 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_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-23 02:03:13,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:03:13,873 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 02:03:13,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:03:14,273 WARN L237 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_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-23 02:03:14,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:03:14,333 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:03:14,588 WARN L237 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_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-23 02:03:14,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:03:14,701 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:03:14,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14 WrapperNode [2022-11-23 02:03:14,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:03:14,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:03:14,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:03:14,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:03:14,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:14,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:14,936 INFO L138 Inliner]: procedures = 170, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2683 [2022-11-23 02:03:14,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:03:14,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:03:14,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:03:14,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:03:14,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:14,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:14,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:14,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:15,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:15,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:15,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:15,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:15,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:03:15,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:03:15,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:03:15,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:03:15,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (1/1) ... [2022-11-23 02:03:15,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:03:15,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:03:15,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:03:15,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:03:15,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-23 02:03:15,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-23 02:03:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-23 02:03:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 02:03:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 02:03:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 02:03:15,319 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 02:03:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 02:03:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-23 02:03:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-23 02:03:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-23 02:03:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-23 02:03:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 02:03:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 02:03:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 02:03:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 02:03:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 02:03:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 02:03:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 02:03:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 02:03:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-11-23 02:03:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-11-23 02:03:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-23 02:03:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-23 02:03:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 02:03:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 02:03:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-23 02:03:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-23 02:03:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-23 02:03:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-23 02:03:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 02:03:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-23 02:03:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-23 02:03:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-23 02:03:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-23 02:03:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-23 02:03:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 02:03:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 02:03:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 02:03:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 02:03:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 02:03:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 02:03:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-23 02:03:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-23 02:03:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:03:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-23 02:03:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-23 02:03:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-23 02:03:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-23 02:03:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:03:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 02:03:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 02:03:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-23 02:03:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-23 02:03:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:03:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 02:03:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 02:03:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-23 02:03:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-23 02:03:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-23 02:03:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 02:03:15,329 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 02:03:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 02:03:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-23 02:03:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-23 02:03:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 02:03:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 02:03:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-23 02:03:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-23 02:03:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-23 02:03:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-23 02:03:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-23 02:03:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-23 02:03:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-23 02:03:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-23 02:03:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-23 02:03:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:03:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 02:03:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-23 02:03:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-23 02:03:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 02:03:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-23 02:03:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-23 02:03:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-23 02:03:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-23 02:03:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 02:03:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 02:03:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 02:03:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-23 02:03:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 02:03:15,335 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 02:03:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 02:03:15,335 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 02:03:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 02:03:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 02:03:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 02:03:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 02:03:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 02:03:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 02:03:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 02:03:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 02:03:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-23 02:03:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-23 02:03:15,341 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-23 02:03:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-23 02:03:15,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-23 02:03:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-23 02:03:15,342 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-23 02:03:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 02:03:15,343 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 02:03:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:03:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:03:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-23 02:03:15,347 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-23 02:03:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-23 02:03:15,349 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-23 02:03:15,962 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:03:15,965 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:03:35,293 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:03:35,317 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:03:35,322 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:03:35,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:03:35 BoogieIcfgContainer [2022-11-23 02:03:35,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:03:35,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:03:35,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:03:35,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:03:35,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:03:12" (1/3) ... [2022-11-23 02:03:35,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416ebdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:03:35, skipping insertion in model container [2022-11-23 02:03:35,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:03:14" (2/3) ... [2022-11-23 02:03:35,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416ebdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:03:35, skipping insertion in model container [2022-11-23 02:03:35,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:03:35" (3/3) ... [2022-11-23 02:03:35,341 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-23 02:03:35,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:03:35,363 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:03:35,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:03:35,471 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40e689c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:03:35,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:03:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 961 states, 709 states have (on average 1.4287729196050776) internal successors, (1013), 736 states have internal predecessors, (1013), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-11-23 02:03:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 02:03:35,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:35,514 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:35,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:35,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:35,521 INFO L85 PathProgramCache]: Analyzing trace with hash -409076956, now seen corresponding path program 1 times [2022-11-23 02:03:35,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:35,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199785623] [2022-11-23 02:03:35,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:35,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:35,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:35,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:35,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 02:03:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:36,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:03:36,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:03:36,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:03:36,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:03:36,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199785623] [2022-11-23 02:03:36,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199785623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:03:36,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:03:36,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:03:36,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783145939] [2022-11-23 02:03:36,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:03:36,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:03:36,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:03:36,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:03:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:03:36,478 INFO L87 Difference]: Start difference. First operand has 961 states, 709 states have (on average 1.4287729196050776) internal successors, (1013), 736 states have internal predecessors, (1013), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 02:03:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:36,767 INFO L93 Difference]: Finished difference Result 1918 states and 2864 transitions. [2022-11-23 02:03:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:03:36,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-23 02:03:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:36,803 INFO L225 Difference]: With dead ends: 1918 [2022-11-23 02:03:36,803 INFO L226 Difference]: Without dead ends: 922 [2022-11-23 02:03:36,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:03:36,821 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 1405 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:36,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 1411 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:03:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-11-23 02:03:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2022-11-23 02:03:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 679 states have (on average 1.4182621502209132) internal successors, (963), 703 states have internal predecessors, (963), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-23 02:03:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1361 transitions. [2022-11-23 02:03:37,008 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1361 transitions. Word has length 59 [2022-11-23 02:03:37,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:37,010 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1361 transitions. [2022-11-23 02:03:37,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 02:03:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1361 transitions. [2022-11-23 02:03:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 02:03:37,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:37,019 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:37,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:03:37,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:37,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash 14569766, now seen corresponding path program 1 times [2022-11-23 02:03:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:37,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395696007] [2022-11-23 02:03:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:37,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:37,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:37,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 02:03:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:37,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:03:37,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:03:37,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:03:37,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:03:37,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395696007] [2022-11-23 02:03:37,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395696007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:03:37,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:03:37,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:03:37,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587663969] [2022-11-23 02:03:37,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:03:37,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:03:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:03:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:03:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:03:37,836 INFO L87 Difference]: Start difference. First operand 922 states and 1361 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 02:03:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:38,064 INFO L93 Difference]: Finished difference Result 1827 states and 2699 transitions. [2022-11-23 02:03:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:03:38,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-23 02:03:38,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:38,073 INFO L225 Difference]: With dead ends: 1827 [2022-11-23 02:03:38,073 INFO L226 Difference]: Without dead ends: 922 [2022-11-23 02:03:38,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:03:38,077 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 1 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:38,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4075 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:03:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-11-23 02:03:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2022-11-23 02:03:38,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 679 states have (on average 1.4167893961708395) internal successors, (962), 703 states have internal predecessors, (962), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-23 02:03:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1360 transitions. [2022-11-23 02:03:38,177 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1360 transitions. Word has length 59 [2022-11-23 02:03:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:38,178 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1360 transitions. [2022-11-23 02:03:38,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 02:03:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1360 transitions. [2022-11-23 02:03:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 02:03:38,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:38,186 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:38,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:03:38,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:38,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:38,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:38,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1156177197, now seen corresponding path program 1 times [2022-11-23 02:03:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:38,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981951377] [2022-11-23 02:03:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:38,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:38,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:38,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 02:03:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:38,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 02:03:38,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:03:39,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:03:39,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:03:39,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981951377] [2022-11-23 02:03:39,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981951377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:03:39,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:03:39,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:03:39,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045368760] [2022-11-23 02:03:39,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:03:39,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:03:39,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:03:39,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:03:39,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:03:39,346 INFO L87 Difference]: Start difference. First operand 922 states and 1360 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 02:03:40,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:40,739 INFO L93 Difference]: Finished difference Result 1866 states and 2747 transitions. [2022-11-23 02:03:40,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:03:40,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2022-11-23 02:03:40,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:40,750 INFO L225 Difference]: With dead ends: 1866 [2022-11-23 02:03:40,750 INFO L226 Difference]: Without dead ends: 950 [2022-11-23 02:03:40,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:03:40,757 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 42 mSDsluCounter, 9484 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 10846 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:40,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 10846 Invalid, 66 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 02:03:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-11-23 02:03:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 944. [2022-11-23 02:03:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 694 states have (on average 1.4092219020172911) internal successors, (978), 719 states have internal predecessors, (978), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-23 02:03:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1381 transitions. [2022-11-23 02:03:40,822 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1381 transitions. Word has length 62 [2022-11-23 02:03:40,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:40,824 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1381 transitions. [2022-11-23 02:03:40,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 02:03:40,825 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1381 transitions. [2022-11-23 02:03:40,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 02:03:40,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:40,827 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:40,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:03:41,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:41,043 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:41,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1594030711, now seen corresponding path program 1 times [2022-11-23 02:03:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:41,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514972657] [2022-11-23 02:03:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:41,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:41,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:41,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:41,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 02:03:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:41,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:03:41,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:03:41,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:03:41,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:03:41,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514972657] [2022-11-23 02:03:41,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514972657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:03:41,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:03:41,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:03:41,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078396670] [2022-11-23 02:03:41,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:03:41,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:03:41,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:03:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:03:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:03:41,543 INFO L87 Difference]: Start difference. First operand 944 states and 1381 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 02:03:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:42,294 INFO L93 Difference]: Finished difference Result 1455 states and 2196 transitions. [2022-11-23 02:03:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:03:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2022-11-23 02:03:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:42,304 INFO L225 Difference]: With dead ends: 1455 [2022-11-23 02:03:42,304 INFO L226 Difference]: Without dead ends: 1453 [2022-11-23 02:03:42,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:03:42,307 INFO L413 NwaCegarLoop]: 2163 mSDtfsCounter, 915 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:42,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 5328 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 02:03:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-11-23 02:03:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 946. [2022-11-23 02:03:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 696 states have (on average 1.4080459770114941) internal successors, (980), 721 states have internal predecessors, (980), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-23 02:03:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1383 transitions. [2022-11-23 02:03:42,416 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1383 transitions. Word has length 65 [2022-11-23 02:03:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:42,417 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1383 transitions. [2022-11-23 02:03:42,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 02:03:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1383 transitions. [2022-11-23 02:03:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 02:03:42,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:42,420 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:42,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:03:42,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:42,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2133834646, now seen corresponding path program 1 times [2022-11-23 02:03:42,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:42,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206319820] [2022-11-23 02:03:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:42,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:42,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:42,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:42,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 02:03:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:43,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:03:43,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:03:43,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:03:43,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:03:43,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206319820] [2022-11-23 02:03:43,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206319820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:03:43,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:03:43,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:03:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529923486] [2022-11-23 02:03:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:03:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:03:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:03:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:03:43,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:03:43,202 INFO L87 Difference]: Start difference. First operand 946 states and 1383 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 02:03:44,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:44,034 INFO L93 Difference]: Finished difference Result 1458 states and 2199 transitions. [2022-11-23 02:03:44,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:03:44,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2022-11-23 02:03:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:44,059 INFO L225 Difference]: With dead ends: 1458 [2022-11-23 02:03:44,060 INFO L226 Difference]: Without dead ends: 1456 [2022-11-23 02:03:44,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:03:44,062 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 915 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:44,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 5336 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 02:03:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2022-11-23 02:03:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 946. [2022-11-23 02:03:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 696 states have (on average 1.4080459770114941) internal successors, (980), 721 states have internal predecessors, (980), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-23 02:03:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1383 transitions. [2022-11-23 02:03:44,231 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1383 transitions. Word has length 66 [2022-11-23 02:03:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:44,232 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1383 transitions. [2022-11-23 02:03:44,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 02:03:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1383 transitions. [2022-11-23 02:03:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 02:03:44,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:44,235 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:44,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-23 02:03:44,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:44,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:44,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2126255121, now seen corresponding path program 1 times [2022-11-23 02:03:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:44,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933777835] [2022-11-23 02:03:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:44,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:44,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:44,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:44,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 02:03:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:44,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:03:44,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:03:45,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:03:45,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:03:45,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933777835] [2022-11-23 02:03:45,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933777835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:03:45,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:03:45,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:03:45,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293543645] [2022-11-23 02:03:45,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:03:45,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:03:45,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:03:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:03:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:03:45,253 INFO L87 Difference]: Start difference. First operand 946 states and 1383 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:03:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:48,761 INFO L93 Difference]: Finished difference Result 2362 states and 3536 transitions. [2022-11-23 02:03:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:03:48,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 75 [2022-11-23 02:03:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:48,771 INFO L225 Difference]: With dead ends: 2362 [2022-11-23 02:03:48,771 INFO L226 Difference]: Without dead ends: 1457 [2022-11-23 02:03:48,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:03:48,807 INFO L413 NwaCegarLoop]: 1845 mSDtfsCounter, 1835 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:48,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 2795 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 02:03:48,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2022-11-23 02:03:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 947. [2022-11-23 02:03:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 697 states have (on average 1.4074605451936872) internal successors, (981), 722 states have internal predecessors, (981), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-23 02:03:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1384 transitions. [2022-11-23 02:03:48,916 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1384 transitions. Word has length 75 [2022-11-23 02:03:48,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:48,917 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1384 transitions. [2022-11-23 02:03:48,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:03:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1384 transitions. [2022-11-23 02:03:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 02:03:48,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:48,920 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:48,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:03:49,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:49,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1326022320, now seen corresponding path program 1 times [2022-11-23 02:03:49,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:49,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538996471] [2022-11-23 02:03:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:49,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:49,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:49,132 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:49,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 02:03:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:49,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:03:49,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:03:49,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:03:49,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:03:49,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538996471] [2022-11-23 02:03:49,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538996471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:03:49,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:03:49,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:03:49,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632055683] [2022-11-23 02:03:49,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:03:49,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:03:49,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:03:49,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:03:49,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:03:49,597 INFO L87 Difference]: Start difference. First operand 947 states and 1384 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:03:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:50,615 INFO L93 Difference]: Finished difference Result 1464 states and 2207 transitions. [2022-11-23 02:03:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:03:50,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-11-23 02:03:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:50,625 INFO L225 Difference]: With dead ends: 1464 [2022-11-23 02:03:50,625 INFO L226 Difference]: Without dead ends: 1462 [2022-11-23 02:03:50,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:03:50,627 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 1299 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 6996 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:50,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 6996 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 02:03:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-23 02:03:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 949. [2022-11-23 02:03:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 698 states have (on average 1.4068767908309456) internal successors, (982), 723 states have internal predecessors, (982), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-23 02:03:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1387 transitions. [2022-11-23 02:03:50,786 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1387 transitions. Word has length 77 [2022-11-23 02:03:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:50,787 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1387 transitions. [2022-11-23 02:03:50,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:03:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1387 transitions. [2022-11-23 02:03:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 02:03:50,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:50,790 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:50,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:03:51,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:51,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash 523121960, now seen corresponding path program 1 times [2022-11-23 02:03:51,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:51,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189615487] [2022-11-23 02:03:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:51,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:51,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:51,008 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:51,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 02:03:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:51,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:03:51,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:03:51,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:03:51,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:03:51,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189615487] [2022-11-23 02:03:51,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189615487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:03:51,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:03:51,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:03:51,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897410251] [2022-11-23 02:03:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:03:51,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:03:51,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:03:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:03:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:03:51,816 INFO L87 Difference]: Start difference. First operand 949 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 02:03:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:52,852 INFO L93 Difference]: Finished difference Result 1857 states and 2729 transitions. [2022-11-23 02:03:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:03:52,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-11-23 02:03:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:52,872 INFO L225 Difference]: With dead ends: 1857 [2022-11-23 02:03:52,873 INFO L226 Difference]: Without dead ends: 949 [2022-11-23 02:03:52,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:03:52,877 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 1305 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:52,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 1396 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 02:03:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-11-23 02:03:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2022-11-23 02:03:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 698 states have (on average 1.4054441260744985) internal successors, (981), 723 states have internal predecessors, (981), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-23 02:03:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1386 transitions. [2022-11-23 02:03:53,061 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1386 transitions. Word has length 85 [2022-11-23 02:03:53,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:53,062 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1386 transitions. [2022-11-23 02:03:53,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 02:03:53,062 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1386 transitions. [2022-11-23 02:03:53,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 02:03:53,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:53,065 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:53,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:03:53,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:53,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash 596960674, now seen corresponding path program 1 times [2022-11-23 02:03:53,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:53,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380372157] [2022-11-23 02:03:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:53,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:53,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:53,282 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:53,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-23 02:03:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:53,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:03:53,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:03:54,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:03:54,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:03:54,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380372157] [2022-11-23 02:03:54,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380372157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:03:54,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:03:54,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:03:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047578826] [2022-11-23 02:03:54,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:03:54,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:03:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:03:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:03:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:03:54,280 INFO L87 Difference]: Start difference. First operand 949 states and 1386 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 02:03:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:59,170 INFO L93 Difference]: Finished difference Result 2370 states and 3544 transitions. [2022-11-23 02:03:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:03:59,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-23 02:03:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:59,179 INFO L225 Difference]: With dead ends: 2370 [2022-11-23 02:03:59,180 INFO L226 Difference]: Without dead ends: 1462 [2022-11-23 02:03:59,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:03:59,184 INFO L413 NwaCegarLoop]: 1913 mSDtfsCounter, 2042 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:59,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 2858 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 02:03:59,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-23 02:03:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 953. [2022-11-23 02:03:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 702 states have (on average 1.4045584045584045) internal successors, (986), 727 states have internal predecessors, (986), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-23 02:03:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1391 transitions. [2022-11-23 02:03:59,445 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1391 transitions. Word has length 87 [2022-11-23 02:03:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:59,446 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1391 transitions. [2022-11-23 02:03:59,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 02:03:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1391 transitions. [2022-11-23 02:03:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 02:03:59,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:59,450 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:03:59,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-23 02:03:59,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:59,668 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:59,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash -272015955, now seen corresponding path program 1 times [2022-11-23 02:03:59,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:03:59,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748807154] [2022-11-23 02:03:59,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:59,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:03:59,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:03:59,674 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:03:59,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee95d5d5-dbab-4df1-acbb-dbc02174ebc3/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-23 02:04:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:00,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 02:04:00,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:04:00,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2022-11-23 02:04:00,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2022-11-23 02:04:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:04:00,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:04:00,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:04:00,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748807154] [2022-11-23 02:04:00,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748807154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:04:00,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:04:00,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:04:00,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564573043] [2022-11-23 02:04:00,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:04:00,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:04:00,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:04:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:04:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:04:00,786 INFO L87 Difference]: Start difference. First operand 953 states and 1391 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 02:04:02,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:09,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:18,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:21,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:23,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:29,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:48,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:50,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:51,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:53,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:55,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:56,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:04:57,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:00,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:03,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:05,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:07,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:38,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:40,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:42,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:44,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:47,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:48,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:50,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:05:52,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 02:06:01,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []