./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ --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 bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef --- 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-dbf71c6-m [2022-10-17 10:13:28,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:13:28,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:13:28,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:13:28,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:13:28,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:13:28,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:13:28,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:13:28,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:13:28,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:13:28,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:13:28,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:13:28,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:13:28,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:13:28,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:13:28,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:13:28,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:13:28,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:13:28,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:13:28,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:13:28,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:13:28,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:13:28,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:13:28,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:13:28,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:13:28,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:13:28,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:13:28,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:13:28,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:13:28,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:13:28,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:13:28,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:13:28,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:13:28,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:13:28,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:13:28,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:13:28,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:13:28,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:13:28,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:13:28,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:13:28,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:13:28,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:13:28,975 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:13:28,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:13:28,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:13:28,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:13:28,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:13:28,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:13:28,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:13:28,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:13:28,979 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:13:28,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:13:28,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:13:28,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:13:28,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:13:28,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:13:28,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:13:28,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:13:28,982 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:13:28,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:13:28,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:13:28,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:13:28,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:13:28,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:13:28,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:13:28,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:13:28,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:13:28,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:13:28,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:13:28,987 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:13:28,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:13:28,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:13:28,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf300fda993e6da191f561c0f8e677f22a7de271b61b51439ca8ec3e0ecdedef [2022-10-17 10:13:29,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:13:29,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:13:29,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:13:29,308 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:13:29,309 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:13:29,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2022-10-17 10:13:29,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/data/bd84c52ca/236b5d119abc4b7c877bd39c4c58537e/FLAGac348d901 [2022-10-17 10:13:30,354 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:13:30,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2022-10-17 10:13:30,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/data/bd84c52ca/236b5d119abc4b7c877bd39c4c58537e/FLAGac348d901 [2022-10-17 10:13:30,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/data/bd84c52ca/236b5d119abc4b7c877bd39c4c58537e [2022-10-17 10:13:30,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:13:30,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:13:30,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:30,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:13:30,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:13:30,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:30" (1/1) ... [2022-10-17 10:13:30,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18855a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:30, skipping insertion in model container [2022-10-17 10:13:30,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:30" (1/1) ... [2022-10-17 10:13:30,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:13:30,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:13:32,027 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2022-10-17 10:13:32,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:32,158 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:13:32,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i[120339,120352] [2022-10-17 10:13:32,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:32,513 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:13:32,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32 WrapperNode [2022-10-17 10:13:32,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:32,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:32,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:13:32,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:13:32,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,698 INFO L138 Inliner]: procedures = 152, calls = 622, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 1750 [2022-10-17 10:13:32,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:32,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:13:32,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:13:32,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:13:32,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,868 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:13:32,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:13:32,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:13:32,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:13:32,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (1/1) ... [2022-10-17 10:13:32,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:13:32,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:32,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:32,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2ba464-4821-430a-9b45-b893efa7f5f7/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:13:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 10:13:33,021 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 10:13:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_alloc_resource [2022-10-17 10:13:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_alloc_resource [2022-10-17 10:13:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure add_interval [2022-10-17 10:13:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure add_interval [2022-10-17 10:13:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:13:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure sub_interval [2022-10-17 10:13:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure sub_interval [2022-10-17 10:13:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:13:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:13:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_mem_region [2022-10-17 10:13:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_mem_region [2022-10-17 10:13:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:13:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:13:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure free_region [2022-10-17 10:13:33,024 INFO L138 BoogieDeclarations]: Found implementation of procedure free_region [2022-10-17 10:13:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:13:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:13:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:13:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure __nonstatic_adjust_io_region [2022-10-17 10:13:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __nonstatic_adjust_io_region [2022-10-17 10:13:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:13:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:13:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:13:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:13:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_release_resource_db [2022-10-17 10:13:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_release_resource_db [2022-10-17 10:13:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure do_mem_probe [2022-10-17 10:13:33,027 INFO L138 BoogieDeclarations]: Found implementation of procedure do_mem_probe [2022-10-17 10:13:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_make_resource [2022-10-17 10:13:33,027 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_make_resource [2022-10-17 10:13:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:13:33,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:13:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_init [2022-10-17 10:13:33,028 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_init [2022-10-17 10:13:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure nonstatic_find_io [2022-10-17 10:13:33,028 INFO L138 BoogieDeclarations]: Found implementation of procedure nonstatic_find_io [2022-10-17 10:13:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:13:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 10:13:33,029 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 10:13:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure pccard_sysfs_add_rsrc [2022-10-17 10:13:33,029 INFO L138 BoogieDeclarations]: Found implementation of procedure pccard_sysfs_add_rsrc [2022-10-17 10:13:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:13:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure static_init [2022-10-17 10:13:33,030 INFO L138 BoogieDeclarations]: Found implementation of procedure static_init [2022-10-17 10:13:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:13:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:13:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure do_validate_mem [2022-10-17 10:13:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure do_validate_mem [2022-10-17 10:13:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_resource [2022-10-17 10:13:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_resource [2022-10-17 10:13:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_nonstatic_validate_mem [2022-10-17 10:13:33,032 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_nonstatic_validate_mem [2022-10-17 10:13:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:13:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure static_find_io [2022-10-17 10:13:33,033 INFO L138 BoogieDeclarations]: Found implementation of procedure static_find_io [2022-10-17 10:13:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2022-10-17 10:13:33,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2022-10-17 10:13:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure show_mem_db [2022-10-17 10:13:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure show_mem_db [2022-10-17 10:13:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_io [2022-10-17 10:13:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_io [2022-10-17 10:13:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:13:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-10-17 10:13:33,036 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-10-17 10:13:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:13:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 10:13:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 10:13:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 10:13:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 10:13:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:13:33,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:13:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-10-17 10:13:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-10-17 10:13:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:13:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-10-17 10:13:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-10-17 10:13:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_6 [2022-10-17 10:13:33,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_6 [2022-10-17 10:13:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_memory [2022-10-17 10:13:33,039 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_memory [2022-10-17 10:13:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_resource [2022-10-17 10:13:33,039 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_resource [2022-10-17 10:13:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pccard_static_ops_release_7 [2022-10-17 10:13:33,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pccard_static_ops_release_7 [2022-10-17 10:13:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:13:33,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:13:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2022-10-17 10:13:33,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ops_mutex_of_pcmcia_socket [2022-10-17 10:13:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure claim_region [2022-10-17 10:13:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_region [2022-10-17 10:13:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2022-10-17 10:13:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ops_mutex_of_pcmcia_socket [2022-10-17 10:13:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure show_io_db [2022-10-17 10:13:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure show_io_db [2022-10-17 10:13:33,661 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:13:33,664 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:13:35,980 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:13:36,005 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:13:36,005 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:13:36,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:36 BoogieIcfgContainer [2022-10-17 10:13:36,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:13:36,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:13:36,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:13:36,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:13:36,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:13:30" (1/3) ... [2022-10-17 10:13:36,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f165726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:13:36, skipping insertion in model container [2022-10-17 10:13:36,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:32" (2/3) ... [2022-10-17 10:13:36,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f165726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:13:36, skipping insertion in model container [2022-10-17 10:13:36,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:36" (3/3) ... [2022-10-17 10:13:36,021 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--pcmcia--pcmcia_rsrc.ko-main.cil.out.i [2022-10-17 10:13:36,040 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:13:36,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:13:36,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:13:36,131 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;@9a0b5a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:13:36,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:13:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 718 states, 551 states have (on average 1.455535390199637) internal successors, (802), 560 states have internal predecessors, (802), 123 states have call successors, (123), 42 states have call predecessors, (123), 42 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-10-17 10:13:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:13:36,156 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:36,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:36,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:36,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:36,163 INFO L85 PathProgramCache]: Analyzing trace with hash 194067530, now seen corresponding path program 1 times [2022-10-17 10:13:36,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:36,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87831523] [2022-10-17 10:13:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:36,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:36,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:36,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87831523] [2022-10-17 10:13:36,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87831523] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:36,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:36,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:13:36,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594812121] [2022-10-17 10:13:36,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:36,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:13:36,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:13:36,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:36,769 INFO L87 Difference]: Start difference. First operand has 718 states, 551 states have (on average 1.455535390199637) internal successors, (802), 560 states have internal predecessors, (802), 123 states have call successors, (123), 42 states have call predecessors, (123), 42 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:37,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:37,040 INFO L93 Difference]: Finished difference Result 2125 states and 3240 transitions. [2022-10-17 10:13:37,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:13:37,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-17 10:13:37,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:37,083 INFO L225 Difference]: With dead ends: 2125 [2022-10-17 10:13:37,083 INFO L226 Difference]: Without dead ends: 1406 [2022-10-17 10:13:37,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:37,103 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 994 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:37,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 2160 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:13:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2022-10-17 10:13:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1402. [2022-10-17 10:13:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1079 states have (on average 1.4355885078776645) internal successors, (1549), 1088 states have internal predecessors, (1549), 240 states have call successors, (240), 83 states have call predecessors, (240), 82 states have return successors, (234), 234 states have call predecessors, (234), 234 states have call successors, (234) [2022-10-17 10:13:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2023 transitions. [2022-10-17 10:13:37,317 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2023 transitions. Word has length 20 [2022-10-17 10:13:37,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:37,317 INFO L495 AbstractCegarLoop]: Abstraction has 1402 states and 2023 transitions. [2022-10-17 10:13:37,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2023 transitions. [2022-10-17 10:13:37,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 10:13:37,332 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:37,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:37,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:13:37,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:37,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1463287874, now seen corresponding path program 1 times [2022-10-17 10:13:37,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:37,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992912552] [2022-10-17 10:13:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:37,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:13:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:37,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:37,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992912552] [2022-10-17 10:13:37,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992912552] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:37,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:37,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:13:37,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838745083] [2022-10-17 10:13:37,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:37,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:13:37,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:13:37,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:13:37,506 INFO L87 Difference]: Start difference. First operand 1402 states and 2023 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:13:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:39,246 INFO L93 Difference]: Finished difference Result 4876 states and 7143 transitions. [2022-10-17 10:13:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:13:39,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-10-17 10:13:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:39,287 INFO L225 Difference]: With dead ends: 4876 [2022-10-17 10:13:39,288 INFO L226 Difference]: Without dead ends: 3477 [2022-10-17 10:13:39,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:13:39,302 INFO L413 NwaCegarLoop]: 1214 mSDtfsCounter, 1767 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:39,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 2746 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:13:39,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2022-10-17 10:13:39,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 2734. [2022-10-17 10:13:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2109 states have (on average 1.433854907539118) internal successors, (3024), 2122 states have internal predecessors, (3024), 460 states have call successors, (460), 165 states have call predecessors, (460), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2022-10-17 10:13:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 3938 transitions. [2022-10-17 10:13:39,568 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 3938 transitions. Word has length 28 [2022-10-17 10:13:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:39,569 INFO L495 AbstractCegarLoop]: Abstraction has 2734 states and 3938 transitions. [2022-10-17 10:13:39,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:13:39,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 3938 transitions. [2022-10-17 10:13:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:13:39,572 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:39,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:39,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:13:39,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:39,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash -900728339, now seen corresponding path program 1 times [2022-10-17 10:13:39,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:39,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232364707] [2022-10-17 10:13:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:39,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:39,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232364707] [2022-10-17 10:13:39,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232364707] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:39,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:39,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:13:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655129608] [2022-10-17 10:13:39,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:39,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:13:39,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:39,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:13:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:39,704 INFO L87 Difference]: Start difference. First operand 2734 states and 3938 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:39,886 INFO L93 Difference]: Finished difference Result 2736 states and 3939 transitions. [2022-10-17 10:13:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:13:39,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-17 10:13:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:39,905 INFO L225 Difference]: With dead ends: 2736 [2022-10-17 10:13:39,905 INFO L226 Difference]: Without dead ends: 2733 [2022-10-17 10:13:39,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:39,908 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 1005 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:39,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1023 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:13:39,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-10-17 10:13:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2733. [2022-10-17 10:13:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2109 states have (on average 1.4333807491702228) internal successors, (3023), 2121 states have internal predecessors, (3023), 459 states have call successors, (459), 165 states have call predecessors, (459), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2022-10-17 10:13:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 3936 transitions. [2022-10-17 10:13:40,103 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 3936 transitions. Word has length 22 [2022-10-17 10:13:40,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:40,103 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 3936 transitions. [2022-10-17 10:13:40,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 3936 transitions. [2022-10-17 10:13:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 10:13:40,106 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:40,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:40,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:13:40,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:40,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2141850950, now seen corresponding path program 1 times [2022-10-17 10:13:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:40,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056345898] [2022-10-17 10:13:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:40,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:40,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:40,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056345898] [2022-10-17 10:13:40,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056345898] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:40,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:40,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:13:40,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703043189] [2022-10-17 10:13:40,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:40,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:13:40,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:13:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:40,229 INFO L87 Difference]: Start difference. First operand 2733 states and 3936 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:40,432 INFO L93 Difference]: Finished difference Result 2735 states and 3937 transitions. [2022-10-17 10:13:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:13:40,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-17 10:13:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:40,461 INFO L225 Difference]: With dead ends: 2735 [2022-10-17 10:13:40,461 INFO L226 Difference]: Without dead ends: 2732 [2022-10-17 10:13:40,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:40,473 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 1002 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:40,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1021 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:13:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-10-17 10:13:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2022-10-17 10:13:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2109 states have (on average 1.4329065908013277) internal successors, (3022), 2120 states have internal predecessors, (3022), 458 states have call successors, (458), 165 states have call predecessors, (458), 164 states have return successors, (454), 454 states have call predecessors, (454), 454 states have call successors, (454) [2022-10-17 10:13:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3934 transitions. [2022-10-17 10:13:40,708 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3934 transitions. Word has length 23 [2022-10-17 10:13:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:40,708 INFO L495 AbstractCegarLoop]: Abstraction has 2732 states and 3934 transitions. [2022-10-17 10:13:40,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3934 transitions. [2022-10-17 10:13:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 10:13:40,711 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:40,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:40,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:13:40,711 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:40,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:40,712 INFO L85 PathProgramCache]: Analyzing trace with hash -666251475, now seen corresponding path program 1 times [2022-10-17 10:13:40,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:40,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635788303] [2022-10-17 10:13:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:40,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:40,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:13:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:40,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:40,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:40,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635788303] [2022-10-17 10:13:40,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635788303] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:40,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:40,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:13:40,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437057302] [2022-10-17 10:13:40,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:40,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:13:40,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:40,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:13:40,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:13:40,804 INFO L87 Difference]: Start difference. First operand 2732 states and 3934 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:13:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:42,563 INFO L93 Difference]: Finished difference Result 9542 states and 13944 transitions. [2022-10-17 10:13:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:13:42,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-10-17 10:13:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:42,624 INFO L225 Difference]: With dead ends: 9542 [2022-10-17 10:13:42,624 INFO L226 Difference]: Without dead ends: 6813 [2022-10-17 10:13:42,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:13:42,637 INFO L413 NwaCegarLoop]: 1316 mSDtfsCounter, 1712 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:42,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 2875 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 10:13:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6813 states. [2022-10-17 10:13:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6813 to 5344. [2022-10-17 10:13:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 4131 states have (on average 1.431130476882111) internal successors, (5912), 4150 states have internal predecessors, (5912), 884 states have call successors, (884), 329 states have call predecessors, (884), 328 states have return successors, (880), 880 states have call predecessors, (880), 880 states have call successors, (880) [2022-10-17 10:13:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 7676 transitions. [2022-10-17 10:13:43,165 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 7676 transitions. Word has length 30 [2022-10-17 10:13:43,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:43,165 INFO L495 AbstractCegarLoop]: Abstraction has 5344 states and 7676 transitions. [2022-10-17 10:13:43,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:13:43,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 7676 transitions. [2022-10-17 10:13:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 10:13:43,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:43,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:43,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:13:43,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1972533264, now seen corresponding path program 1 times [2022-10-17 10:13:43,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:43,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343174638] [2022-10-17 10:13:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:43,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:43,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343174638] [2022-10-17 10:13:43,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343174638] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:43,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:43,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:13:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879863924] [2022-10-17 10:13:43,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:43,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:13:43,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:13:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:43,275 INFO L87 Difference]: Start difference. First operand 5344 states and 7676 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:43,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:43,590 INFO L93 Difference]: Finished difference Result 5346 states and 7677 transitions. [2022-10-17 10:13:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:13:43,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-17 10:13:43,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:43,636 INFO L225 Difference]: With dead ends: 5346 [2022-10-17 10:13:43,636 INFO L226 Difference]: Without dead ends: 5343 [2022-10-17 10:13:43,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:43,642 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 999 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:43,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1019 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:13:43,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2022-10-17 10:13:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5343. [2022-10-17 10:13:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 4131 states have (on average 1.430888404744614) internal successors, (5911), 4149 states have internal predecessors, (5911), 883 states have call successors, (883), 329 states have call predecessors, (883), 328 states have return successors, (880), 880 states have call predecessors, (880), 880 states have call successors, (880) [2022-10-17 10:13:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 7674 transitions. [2022-10-17 10:13:44,114 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 7674 transitions. Word has length 24 [2022-10-17 10:13:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:44,115 INFO L495 AbstractCegarLoop]: Abstraction has 5343 states and 7674 transitions. [2022-10-17 10:13:44,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 7674 transitions. [2022-10-17 10:13:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-17 10:13:44,117 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:44,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:13:44,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1018657161, now seen corresponding path program 1 times [2022-10-17 10:13:44,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:44,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636755602] [2022-10-17 10:13:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:44,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:44,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:44,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636755602] [2022-10-17 10:13:44,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636755602] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:44,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:44,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:13:44,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329394012] [2022-10-17 10:13:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:44,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:13:44,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:44,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:13:44,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:44,196 INFO L87 Difference]: Start difference. First operand 5343 states and 7674 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:44,787 INFO L93 Difference]: Finished difference Result 11801 states and 16996 transitions. [2022-10-17 10:13:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:13:44,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-10-17 10:13:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:44,856 INFO L225 Difference]: With dead ends: 11801 [2022-10-17 10:13:44,857 INFO L226 Difference]: Without dead ends: 6454 [2022-10-17 10:13:44,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:44,885 INFO L413 NwaCegarLoop]: 1137 mSDtfsCounter, 947 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:44,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:13:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6454 states. [2022-10-17 10:13:45,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6454 to 6424. [2022-10-17 10:13:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6424 states, 4961 states have (on average 1.4192703084055633) internal successors, (7041), 4990 states have internal predecessors, (7041), 1044 states have call successors, (1044), 432 states have call predecessors, (1044), 418 states have return successors, (1064), 1025 states have call predecessors, (1064), 1040 states have call successors, (1064) [2022-10-17 10:13:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6424 states to 6424 states and 9149 transitions. [2022-10-17 10:13:45,509 INFO L78 Accepts]: Start accepts. Automaton has 6424 states and 9149 transitions. Word has length 25 [2022-10-17 10:13:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:45,509 INFO L495 AbstractCegarLoop]: Abstraction has 6424 states and 9149 transitions. [2022-10-17 10:13:45,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 6424 states and 9149 transitions. [2022-10-17 10:13:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 10:13:45,525 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:45,525 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:13:45,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:13:45,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:45,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:45,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1739739189, now seen corresponding path program 1 times [2022-10-17 10:13:45,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:45,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893317767] [2022-10-17 10:13:45,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:45,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-17 10:13:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:45,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:13:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:13:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:13:45,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:45,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893317767] [2022-10-17 10:13:45,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893317767] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:45,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:45,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:13:45,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181128586] [2022-10-17 10:13:45,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:45,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:13:45,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:45,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:13:45,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:13:45,786 INFO L87 Difference]: Start difference. First operand 6424 states and 9149 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:13:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:48,450 INFO L93 Difference]: Finished difference Result 10134 states and 14825 transitions. [2022-10-17 10:13:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:13:48,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2022-10-17 10:13:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:48,502 INFO L225 Difference]: With dead ends: 10134 [2022-10-17 10:13:48,502 INFO L226 Difference]: Without dead ends: 9074 [2022-10-17 10:13:48,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:13:48,514 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 1561 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:48,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 2718 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-17 10:13:48,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2022-10-17 10:13:49,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 6404. [2022-10-17 10:13:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6404 states, 4948 states have (on average 1.417946645109135) internal successors, (7016), 4980 states have internal predecessors, (7016), 1037 states have call successors, (1037), 429 states have call predecessors, (1037), 418 states have return successors, (1024), 1018 states have call predecessors, (1024), 1024 states have call successors, (1024) [2022-10-17 10:13:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 9077 transitions. [2022-10-17 10:13:49,159 INFO L78 Accepts]: Start accepts. Automaton has 6404 states and 9077 transitions. Word has length 57 [2022-10-17 10:13:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:49,160 INFO L495 AbstractCegarLoop]: Abstraction has 6404 states and 9077 transitions. [2022-10-17 10:13:49,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:13:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 6404 states and 9077 transitions. [2022-10-17 10:13:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:13:49,185 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:49,185 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:49,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:13:49,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:49,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:49,186 INFO L85 PathProgramCache]: Analyzing trace with hash -150469360, now seen corresponding path program 1 times [2022-10-17 10:13:49,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:49,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121678980] [2022-10-17 10:13:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:49,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:13:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:13:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-17 10:13:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:13:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-17 10:13:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-17 10:13:49,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:49,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121678980] [2022-10-17 10:13:49,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121678980] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:49,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:49,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:13:49,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137803034] [2022-10-17 10:13:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:49,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:13:49,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:13:49,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:13:49,605 INFO L87 Difference]: Start difference. First operand 6404 states and 9077 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:13:53,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:53,467 INFO L93 Difference]: Finished difference Result 24570 states and 35865 transitions. [2022-10-17 10:13:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:13:53,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 124 [2022-10-17 10:13:53,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:13:53,585 INFO L225 Difference]: With dead ends: 24570 [2022-10-17 10:13:53,585 INFO L226 Difference]: Without dead ends: 18169 [2022-10-17 10:13:53,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:13:53,619 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 2352 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 2925 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:13:53,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2448 Valid, 2925 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:13:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18169 states. [2022-10-17 10:13:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18169 to 12616. [2022-10-17 10:13:54,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12616 states, 9750 states have (on average 1.4143589743589744) internal successors, (13790), 9814 states have internal predecessors, (13790), 2029 states have call successors, (2029), 855 states have call predecessors, (2029), 836 states have return successors, (2008), 1994 states have call predecessors, (2008), 2008 states have call successors, (2008) [2022-10-17 10:13:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12616 states to 12616 states and 17827 transitions. [2022-10-17 10:13:54,939 INFO L78 Accepts]: Start accepts. Automaton has 12616 states and 17827 transitions. Word has length 124 [2022-10-17 10:13:54,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:13:54,939 INFO L495 AbstractCegarLoop]: Abstraction has 12616 states and 17827 transitions. [2022-10-17 10:13:54,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:13:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 12616 states and 17827 transitions. [2022-10-17 10:13:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:13:54,988 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:13:54,989 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:54,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:13:54,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:13:54,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1545033982, now seen corresponding path program 1 times [2022-10-17 10:13:54,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:54,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8895415] [2022-10-17 10:13:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:54,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:13:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:13:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:13:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:13:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:13:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:13:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-17 10:13:55,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:55,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8895415] [2022-10-17 10:13:55,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8895415] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:55,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:55,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:13:55,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966343011] [2022-10-17 10:13:55,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:55,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:13:55,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:13:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:13:55,443 INFO L87 Difference]: Start difference. First operand 12616 states and 17827 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)