./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R --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 32bit --witnessprinter.graph.data.programhash 9dc54d5213c4407313cf4404e06f4e3ced3af047edaa52f6d33441570abdeda7 --- 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-38b53e6 [2022-11-25 16:46:44,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:46:44,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:46:44,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:46:44,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:46:44,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:46:44,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:46:44,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:46:44,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:46:44,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:46:44,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:46:44,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:46:44,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:46:44,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:46:44,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:46:44,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:46:44,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:46:44,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:46:44,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:46:44,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:46:44,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:46:44,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:46:44,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:46:44,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:46:44,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:46:44,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:46:44,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:46:44,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:46:44,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:46:44,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:46:44,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:46:44,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:46:44,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:46:44,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:46:44,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:46:44,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:46:44,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:46:44,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:46:44,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:46:44,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:46:44,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:46:44,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:46:44,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:46:44,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:46:44,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:46:44,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:46:44,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:46:44,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:46:44,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:46:44,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:46:44,954 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:46:44,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:46:44,954 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:46:44,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:46:44,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:46:44,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:46:44,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:46:44,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:46:44,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:46:44,956 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:46:44,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:46:44,957 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:46:44,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:46:44,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:46:44,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:46:44,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:46:44,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:46:44,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:46:44,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:46:44,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:46:44,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:46:44,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:46:44,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:46:44,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:46:44,960 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:46:44,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:46:44,960 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dc54d5213c4407313cf4404e06f4e3ced3af047edaa52f6d33441570abdeda7 [2022-11-25 16:46:45,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:46:45,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:46:45,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:46:45,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:46:45,229 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:46:45,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/email_spec0_product37.cil.c [2022-11-25 16:46:48,316 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:46:48,740 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:46:48,748 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c [2022-11-25 16:46:48,774 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/data/90547051f/d4ab76e5389a408c82113e8b7902c789/FLAGda83d396a [2022-11-25 16:46:48,921 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/data/90547051f/d4ab76e5389a408c82113e8b7902c789 [2022-11-25 16:46:48,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:46:48,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:46:48,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:46:48,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:46:48,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:46:48,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:46:48" (1/1) ... [2022-11-25 16:46:48,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7714cc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:48, skipping insertion in model container [2022-11-25 16:46:48,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:46:48" (1/1) ... [2022-11-25 16:46:48,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:46:49,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:46:49,193 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c[1542,1555] [2022-11-25 16:46:49,280 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,285 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,292 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,487 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,492 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,508 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,513 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,713 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:46:49,739 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:46:49,761 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/sv-benchmarks/c/product-lines/email_spec0_product37.cil.c[1542,1555] [2022-11-25 16:46:49,766 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,779 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,782 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,817 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,827 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,835 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,838 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,871 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:46:49,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:46:49,904 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:46:49,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49 WrapperNode [2022-11-25 16:46:49,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:46:49,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:46:49,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:46:49,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:46:49,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:49,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,018 INFO L138 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 51, calls inlined = 46, statements flattened = 829 [2022-11-25 16:46:50,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:46:50,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:46:50,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:46:50,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:46:50,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,062 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:46:50,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:46:50,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:46:50,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:46:50,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (1/1) ... [2022-11-25 16:46:50,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:46:50,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:50,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:46:50,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:46:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 16:46:50,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 16:46:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 16:46:50,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 16:46:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 16:46:50,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 16:46:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 16:46:50,225 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 16:46:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 16:46:50,225 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 16:46:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 16:46:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 16:46:50,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 16:46:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-25 16:46:50,227 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-25 16:46:50,227 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 16:46:50,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 16:46:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:46:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 16:46:50,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 16:46:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 16:46:50,229 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 16:46:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 16:46:50,229 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 16:46:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 16:46:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 16:46:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 16:46:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 16:46:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 16:46:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 16:46:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:46:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 16:46:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 16:46:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:46:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:46:50,480 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:46:50,483 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:46:51,382 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:46:51,400 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:46:51,402 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 16:46:51,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:46:51 BoogieIcfgContainer [2022-11-25 16:46:51,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:46:51,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:46:51,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:46:51,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:46:51,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:46:48" (1/3) ... [2022-11-25 16:46:51,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7a797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:46:51, skipping insertion in model container [2022-11-25 16:46:51,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:49" (2/3) ... [2022-11-25 16:46:51,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7a797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:46:51, skipping insertion in model container [2022-11-25 16:46:51,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:46:51" (3/3) ... [2022-11-25 16:46:51,420 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product37.cil.c [2022-11-25 16:46:51,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:46:51,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:46:51,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:46:51,541 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;@28346f04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:46:51,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 16:46:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 201 states have (on average 1.5223880597014925) internal successors, (306), 203 states have internal predecessors, (306), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-25 16:46:51,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 16:46:51,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:46:51,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:51,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:46:51,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1324119158, now seen corresponding path program 1 times [2022-11-25 16:46:51,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:51,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180449008] [2022-11-25 16:46:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:46:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:46:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:46:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:46:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 16:46:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 16:46:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 16:46:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 16:46:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 16:46:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 16:46:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 16:46:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 16:46:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 16:46:52,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:52,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180449008] [2022-11-25 16:46:52,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180449008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:52,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595881098] [2022-11-25 16:46:52,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:52,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:52,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:52,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:52,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:46:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 16:46:52,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 16:46:52,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:52,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595881098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:52,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:52,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-25 16:46:52,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070652398] [2022-11-25 16:46:52,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:52,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:46:52,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:53,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:46:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:46:53,036 INFO L87 Difference]: Start difference. First operand has 258 states, 201 states have (on average 1.5223880597014925) internal successors, (306), 203 states have internal predecessors, (306), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:46:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:46:53,111 INFO L93 Difference]: Finished difference Result 357 states and 518 transitions. [2022-11-25 16:46:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:46:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 97 [2022-11-25 16:46:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:46:53,125 INFO L225 Difference]: With dead ends: 357 [2022-11-25 16:46:53,126 INFO L226 Difference]: Without dead ends: 251 [2022-11-25 16:46:53,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:46:53,133 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:46:53,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:46:53,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-25 16:46:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-11-25 16:46:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 195 states have (on average 1.5128205128205128) internal successors, (295), 196 states have internal predecessors, (295), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-25 16:46:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 374 transitions. [2022-11-25 16:46:53,197 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 374 transitions. Word has length 97 [2022-11-25 16:46:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:46:53,199 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 374 transitions. [2022-11-25 16:46:53,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:46:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 374 transitions. [2022-11-25 16:46:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 16:46:53,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:46:53,204 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:53,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 16:46:53,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 16:46:53,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:46:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:53,413 INFO L85 PathProgramCache]: Analyzing trace with hash 916126259, now seen corresponding path program 1 times [2022-11-25 16:46:53,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:53,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290560580] [2022-11-25 16:46:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:53,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:46:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:46:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:46:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:46:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 16:46:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 16:46:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 16:46:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 16:46:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 16:46:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 16:46:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 16:46:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 16:46:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 16:46:53,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:53,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290560580] [2022-11-25 16:46:53,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290560580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:53,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783280547] [2022-11-25 16:46:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:53,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:53,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:53,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:53,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:46:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 16:46:54,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 16:46:54,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:54,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783280547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:54,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:54,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 16:46:54,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35135603] [2022-11-25 16:46:54,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:54,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:54,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:54,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:46:54,273 INFO L87 Difference]: Start difference. First operand 251 states and 374 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:46:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:46:54,328 INFO L93 Difference]: Finished difference Result 347 states and 499 transitions. [2022-11-25 16:46:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:54,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-11-25 16:46:54,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:46:54,334 INFO L225 Difference]: With dead ends: 347 [2022-11-25 16:46:54,334 INFO L226 Difference]: Without dead ends: 254 [2022-11-25 16:46:54,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:46:54,337 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:46:54,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 742 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:46:54,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-25 16:46:54,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2022-11-25 16:46:54,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 197 states have (on average 1.5076142131979695) internal successors, (297), 198 states have internal predecessors, (297), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-25 16:46:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 376 transitions. [2022-11-25 16:46:54,359 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 376 transitions. Word has length 98 [2022-11-25 16:46:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:46:54,359 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 376 transitions. [2022-11-25 16:46:54,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:46:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 376 transitions. [2022-11-25 16:46:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-25 16:46:54,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:46:54,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:54,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:54,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:54,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:46:54,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:54,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1193905333, now seen corresponding path program 1 times [2022-11-25 16:46:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:54,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573187883] [2022-11-25 16:46:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:54,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:46:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:46:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:46:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:46:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 16:46:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 16:46:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 16:46:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 16:46:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 16:46:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 16:46:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 16:46:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 16:46:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 16:46:54,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573187883] [2022-11-25 16:46:54,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573187883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486420551] [2022-11-25 16:46:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:54,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:54,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:54,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:46:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:46:55,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 16:46:55,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:55,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486420551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:55,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:55,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 16:46:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716722581] [2022-11-25 16:46:55,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:55,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:55,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:46:55,247 INFO L87 Difference]: Start difference. First operand 253 states and 376 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:46:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:46:55,290 INFO L93 Difference]: Finished difference Result 541 states and 819 transitions. [2022-11-25 16:46:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:55,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-11-25 16:46:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:46:55,297 INFO L225 Difference]: With dead ends: 541 [2022-11-25 16:46:55,297 INFO L226 Difference]: Without dead ends: 315 [2022-11-25 16:46:55,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:46:55,304 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 115 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:46:55,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 718 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:46:55,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-25 16:46:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 307. [2022-11-25 16:46:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 240 states have (on average 1.5291666666666666) internal successors, (367), 241 states have internal predecessors, (367), 51 states have call successors, (51), 15 states have call predecessors, (51), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-25 16:46:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 468 transitions. [2022-11-25 16:46:55,355 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 468 transitions. Word has length 107 [2022-11-25 16:46:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:46:55,356 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 468 transitions. [2022-11-25 16:46:55,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:46:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 468 transitions. [2022-11-25 16:46:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-25 16:46:55,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:46:55,367 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:55,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:55,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:55,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:46:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1043469568, now seen corresponding path program 1 times [2022-11-25 16:46:55,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:55,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443737322] [2022-11-25 16:46:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:55,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:46:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:46:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:46:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:46:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 16:46:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 16:46:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 16:46:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 16:46:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 16:46:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 16:46:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 16:46:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 16:46:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 16:46:55,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:55,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443737322] [2022-11-25 16:46:55,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443737322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:55,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268655209] [2022-11-25 16:46:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:55,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:55,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:55,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:55,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:46:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:56,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 16:46:56,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 16:46:56,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:56,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268655209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:56,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:56,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-25 16:46:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702705654] [2022-11-25 16:46:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:56,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:46:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:56,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:46:56,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:46:56,310 INFO L87 Difference]: Start difference. First operand 307 states and 468 transitions. Second operand has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 16:46:56,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:46:56,420 INFO L93 Difference]: Finished difference Result 605 states and 926 transitions. [2022-11-25 16:46:56,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:46:56,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-11-25 16:46:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:46:56,427 INFO L225 Difference]: With dead ends: 605 [2022-11-25 16:46:56,427 INFO L226 Difference]: Without dead ends: 309 [2022-11-25 16:46:56,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:46:56,433 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 133 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:46:56,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1307 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:46:56,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-25 16:46:56,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2022-11-25 16:46:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 241 states have (on average 1.5269709543568464) internal successors, (368), 243 states have internal predecessors, (368), 51 states have call successors, (51), 15 states have call predecessors, (51), 16 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2022-11-25 16:46:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 471 transitions. [2022-11-25 16:46:56,485 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 471 transitions. Word has length 108 [2022-11-25 16:46:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:46:56,485 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 471 transitions. [2022-11-25 16:46:56,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 16:46:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 471 transitions. [2022-11-25 16:46:56,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-25 16:46:56,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:46:56,489 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:56,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:56,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:56,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:46:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1886412003, now seen corresponding path program 1 times [2022-11-25 16:46:56,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:56,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315587633] [2022-11-25 16:46:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:56,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:46:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:46:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:46:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:56,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:46:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 16:46:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 16:46:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 16:46:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 16:46:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 16:46:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 16:46:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 16:46:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 16:46:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 16:46:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:57,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315587633] [2022-11-25 16:46:57,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315587633] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:46:57,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849527798] [2022-11-25 16:46:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:57,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:57,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:57,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:46:57,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:46:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:46:57,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:46:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 16:46:57,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:46:57,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849527798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:57,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:46:57,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-25 16:46:57,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849948567] [2022-11-25 16:46:57,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:57,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:46:57,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:57,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:46:57,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:46:57,412 INFO L87 Difference]: Start difference. First operand 309 states and 471 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 16:46:57,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:46:57,498 INFO L93 Difference]: Finished difference Result 607 states and 931 transitions. [2022-11-25 16:46:57,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:46:57,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2022-11-25 16:46:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:46:57,501 INFO L225 Difference]: With dead ends: 607 [2022-11-25 16:46:57,502 INFO L226 Difference]: Without dead ends: 311 [2022-11-25 16:46:57,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:46:57,504 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 132 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:46:57,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1296 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:46:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-25 16:46:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2022-11-25 16:46:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 242 states have (on average 1.524793388429752) internal successors, (369), 245 states have internal predecessors, (369), 51 states have call successors, (51), 15 states have call predecessors, (51), 17 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2022-11-25 16:46:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 477 transitions. [2022-11-25 16:46:57,528 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 477 transitions. Word has length 109 [2022-11-25 16:46:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:46:57,529 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 477 transitions. [2022-11-25 16:46:57,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 16:46:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 477 transitions. [2022-11-25 16:46:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 16:46:57,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:46:57,532 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:46:57,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:46:57,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:46:57,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:46:57,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:57,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1125567738, now seen corresponding path program 1 times [2022-11-25 16:46:57,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:57,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166650972] [2022-11-25 16:46:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:57,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:46:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:46:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:46:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:46:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:46:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 16:46:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 16:46:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 16:46:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 16:46:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 16:46:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 16:46:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 16:46:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 16:46:57,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:57,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166650972] [2022-11-25 16:46:57,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166650972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:57,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:57,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 16:46:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194519548] [2022-11-25 16:46:57,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:57,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 16:46:57,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 16:46:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:46:57,992 INFO L87 Difference]: Start difference. First operand 311 states and 477 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 16:47:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:00,180 INFO L93 Difference]: Finished difference Result 734 states and 1134 transitions. [2022-11-25 16:47:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 16:47:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-11-25 16:47:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:00,186 INFO L225 Difference]: With dead ends: 734 [2022-11-25 16:47:00,186 INFO L226 Difference]: Without dead ends: 446 [2022-11-25 16:47:00,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:47:00,189 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 811 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:00,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1044 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 16:47:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-25 16:47:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 311. [2022-11-25 16:47:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 242 states have (on average 1.524793388429752) internal successors, (369), 245 states have internal predecessors, (369), 51 states have call successors, (51), 15 states have call predecessors, (51), 17 states have return successors, (56), 50 states have call predecessors, (56), 50 states have call successors, (56) [2022-11-25 16:47:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 476 transitions. [2022-11-25 16:47:00,255 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 476 transitions. Word has length 110 [2022-11-25 16:47:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:00,257 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 476 transitions. [2022-11-25 16:47:00,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 16:47:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 476 transitions. [2022-11-25 16:47:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 16:47:00,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:00,263 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:00,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:47:00,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash -649999681, now seen corresponding path program 2 times [2022-11-25 16:47:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:00,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038681936] [2022-11-25 16:47:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:00,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 16:47:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 16:47:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 16:47:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 16:47:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 16:47:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 16:47:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 16:47:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 16:47:00,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:00,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038681936] [2022-11-25 16:47:00,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038681936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:00,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:00,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 16:47:00,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572803873] [2022-11-25 16:47:00,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:00,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 16:47:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 16:47:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:47:00,527 INFO L87 Difference]: Start difference. First operand 311 states and 476 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 16:47:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:02,472 INFO L93 Difference]: Finished difference Result 736 states and 1137 transitions. [2022-11-25 16:47:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 16:47:02,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-25 16:47:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:02,476 INFO L225 Difference]: With dead ends: 736 [2022-11-25 16:47:02,476 INFO L226 Difference]: Without dead ends: 448 [2022-11-25 16:47:02,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:47:02,478 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 806 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:02,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1044 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 16:47:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-25 16:47:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 313. [2022-11-25 16:47:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 51 states have call successors, (51), 15 states have call predecessors, (51), 18 states have return successors, (58), 50 states have call predecessors, (58), 50 states have call successors, (58) [2022-11-25 16:47:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 479 transitions. [2022-11-25 16:47:02,518 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 479 transitions. Word has length 111 [2022-11-25 16:47:02,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:02,519 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 479 transitions. [2022-11-25 16:47:02,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 16:47:02,519 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 479 transitions. [2022-11-25 16:47:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-25 16:47:02,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:02,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:02,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:47:02,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1391093877, now seen corresponding path program 1 times [2022-11-25 16:47:02,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:02,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948502371] [2022-11-25 16:47:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:02,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 16:47:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 16:47:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 16:47:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 16:47:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 16:47:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 16:47:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 16:47:02,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:02,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948502371] [2022-11-25 16:47:02,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948502371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:02,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:02,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 16:47:02,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146067364] [2022-11-25 16:47:02,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:02,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 16:47:02,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:02,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 16:47:02,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:47:02,811 INFO L87 Difference]: Start difference. First operand 313 states and 479 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 16:47:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:05,446 INFO L93 Difference]: Finished difference Result 734 states and 1132 transitions. [2022-11-25 16:47:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:47:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 112 [2022-11-25 16:47:05,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:05,450 INFO L225 Difference]: With dead ends: 734 [2022-11-25 16:47:05,450 INFO L226 Difference]: Without dead ends: 448 [2022-11-25 16:47:05,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-25 16:47:05,452 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 939 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 3019 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 3019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:05,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1361 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 3019 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 16:47:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-25 16:47:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 313. [2022-11-25 16:47:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 51 states have call successors, (51), 15 states have call predecessors, (51), 18 states have return successors, (57), 50 states have call predecessors, (57), 50 states have call successors, (57) [2022-11-25 16:47:05,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 478 transitions. [2022-11-25 16:47:05,492 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 478 transitions. Word has length 112 [2022-11-25 16:47:05,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:05,492 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 478 transitions. [2022-11-25 16:47:05,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 16:47:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 478 transitions. [2022-11-25 16:47:05,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 16:47:05,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:05,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:47:05,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:05,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1399040254, now seen corresponding path program 2 times [2022-11-25 16:47:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:05,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495097817] [2022-11-25 16:47:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 16:47:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 16:47:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 16:47:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 16:47:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 16:47:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 16:47:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 16:47:05,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:05,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495097817] [2022-11-25 16:47:05,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495097817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:05,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:05,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 16:47:05,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582260595] [2022-11-25 16:47:05,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:05,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 16:47:05,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:05,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 16:47:05,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:47:05,796 INFO L87 Difference]: Start difference. First operand 313 states and 478 transitions. Second operand has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 16:47:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:08,426 INFO L93 Difference]: Finished difference Result 736 states and 1138 transitions. [2022-11-25 16:47:08,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:47:08,427 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2022-11-25 16:47:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:08,432 INFO L225 Difference]: With dead ends: 736 [2022-11-25 16:47:08,432 INFO L226 Difference]: Without dead ends: 450 [2022-11-25 16:47:08,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-25 16:47:08,436 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 933 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 3068 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 3068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:08,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1362 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 3068 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 16:47:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-25 16:47:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 315. [2022-11-25 16:47:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 244 states have (on average 1.5204918032786885) internal successors, (371), 249 states have internal predecessors, (371), 51 states have call successors, (51), 15 states have call predecessors, (51), 19 states have return successors, (62), 50 states have call predecessors, (62), 50 states have call successors, (62) [2022-11-25 16:47:08,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 484 transitions. [2022-11-25 16:47:08,476 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 484 transitions. Word has length 113 [2022-11-25 16:47:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:08,477 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 484 transitions. [2022-11-25 16:47:08,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 16:47:08,478 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 484 transitions. [2022-11-25 16:47:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 16:47:08,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:08,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:08,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:47:08,482 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:08,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1517675216, now seen corresponding path program 1 times [2022-11-25 16:47:08,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:08,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225804323] [2022-11-25 16:47:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:08,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 16:47:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 16:47:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 16:47:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 16:47:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 16:47:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 16:47:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 16:47:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:08,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225804323] [2022-11-25 16:47:08,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225804323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:47:08,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684722046] [2022-11-25 16:47:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:08,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:47:08,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:47:08,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:47:08,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:47:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:09,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:47:09,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:47:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:09,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:47:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:09,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684722046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:47:09,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:47:09,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-11-25 16:47:09,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593094603] [2022-11-25 16:47:09,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:47:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:47:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:47:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:47:09,254 INFO L87 Difference]: Start difference. First operand 315 states and 484 transitions. Second operand has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-25 16:47:13,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:13,817 INFO L93 Difference]: Finished difference Result 1465 states and 2446 transitions. [2022-11-25 16:47:13,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 16:47:13,818 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 114 [2022-11-25 16:47:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:13,825 INFO L225 Difference]: With dead ends: 1465 [2022-11-25 16:47:13,825 INFO L226 Difference]: Without dead ends: 1181 [2022-11-25 16:47:13,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-25 16:47:13,833 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 2905 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 4828 mSolverCounterSat, 1130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2907 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 5958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1130 IncrementalHoareTripleChecker+Valid, 4828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:13,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2907 Valid, 3549 Invalid, 5958 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1130 Valid, 4828 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 16:47:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-25 16:47:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 668. [2022-11-25 16:47:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.5797373358348967) internal successors, (842), 538 states have internal predecessors, (842), 115 states have call successors, (115), 15 states have call predecessors, (115), 19 states have return successors, (136), 114 states have call predecessors, (136), 114 states have call successors, (136) [2022-11-25 16:47:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1093 transitions. [2022-11-25 16:47:13,961 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1093 transitions. Word has length 114 [2022-11-25 16:47:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:13,961 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1093 transitions. [2022-11-25 16:47:13,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-25 16:47:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1093 transitions. [2022-11-25 16:47:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-25 16:47:13,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:13,966 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:13,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 16:47:14,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730d2868-2a6c-4016-bd11-4f897fdbfda0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 16:47:14,174 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1763331710, now seen corresponding path program 1 times [2022-11-25 16:47:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:14,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721314076] [2022-11-25 16:47:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:14,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 16:47:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 16:47:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 16:47:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 16:47:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 16:47:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 16:47:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:14,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:14,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721314076] [2022-11-25 16:47:14,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721314076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:14,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:14,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:47:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186887997] [2022-11-25 16:47:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:14,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:14,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:14,337 INFO L87 Difference]: Start difference. First operand 668 states and 1093 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:16,062 INFO L93 Difference]: Finished difference Result 1726 states and 2889 transitions. [2022-11-25 16:47:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:47:16,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2022-11-25 16:47:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:16,078 INFO L225 Difference]: With dead ends: 1726 [2022-11-25 16:47:16,078 INFO L226 Difference]: Without dead ends: 1136 [2022-11-25 16:47:16,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:16,083 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 789 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:16,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 902 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 16:47:16,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-11-25 16:47:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 993. [2022-11-25 16:47:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 794 states have (on average 1.5957178841309825) internal successors, (1267), 799 states have internal predecessors, (1267), 179 states have call successors, (179), 15 states have call predecessors, (179), 19 states have return successors, (210), 178 states have call predecessors, (210), 178 states have call successors, (210) [2022-11-25 16:47:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1656 transitions. [2022-11-25 16:47:16,235 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1656 transitions. Word has length 117 [2022-11-25 16:47:16,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:16,235 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1656 transitions. [2022-11-25 16:47:16,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1656 transitions. [2022-11-25 16:47:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-25 16:47:16,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:16,242 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 16:47:16,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:16,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1986162796, now seen corresponding path program 1 times [2022-11-25 16:47:16,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:16,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234183772] [2022-11-25 16:47:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:16,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 16:47:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 16:47:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 16:47:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 16:47:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 16:47:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 16:47:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:16,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:16,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234183772] [2022-11-25 16:47:16,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234183772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:16,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:16,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:47:16,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6278540] [2022-11-25 16:47:16,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:16,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:16,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:16,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:16,373 INFO L87 Difference]: Start difference. First operand 993 states and 1656 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:18,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:18,063 INFO L93 Difference]: Finished difference Result 2531 states and 4273 transitions. [2022-11-25 16:47:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:47:18,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-11-25 16:47:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:18,101 INFO L225 Difference]: With dead ends: 2531 [2022-11-25 16:47:18,102 INFO L226 Difference]: Without dead ends: 1669 [2022-11-25 16:47:18,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:18,105 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 789 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:18,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 873 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 16:47:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2022-11-25 16:47:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1526. [2022-11-25 16:47:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1232 states have (on average 1.6014610389610389) internal successors, (1973), 1237 states have internal predecessors, (1973), 274 states have call successors, (274), 15 states have call predecessors, (274), 19 states have return successors, (305), 273 states have call predecessors, (305), 273 states have call successors, (305) [2022-11-25 16:47:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2552 transitions. [2022-11-25 16:47:18,317 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2552 transitions. Word has length 118 [2022-11-25 16:47:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:18,317 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2552 transitions. [2022-11-25 16:47:18,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2552 transitions. [2022-11-25 16:47:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-25 16:47:18,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:18,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:18,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:47:18,327 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash -789821556, now seen corresponding path program 1 times [2022-11-25 16:47:18,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:18,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760002461] [2022-11-25 16:47:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:18,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 16:47:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 16:47:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 16:47:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 16:47:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 16:47:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 16:47:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:18,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:18,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760002461] [2022-11-25 16:47:18,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760002461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:18,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:18,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:47:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879010192] [2022-11-25 16:47:18,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:18,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:18,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:18,509 INFO L87 Difference]: Start difference. First operand 1526 states and 2552 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:20,324 INFO L93 Difference]: Finished difference Result 3738 states and 6359 transitions. [2022-11-25 16:47:20,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:47:20,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-11-25 16:47:20,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:20,339 INFO L225 Difference]: With dead ends: 3738 [2022-11-25 16:47:20,339 INFO L226 Difference]: Without dead ends: 2478 [2022-11-25 16:47:20,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:20,346 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 787 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:20,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 868 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 16:47:20,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2022-11-25 16:47:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2335. [2022-11-25 16:47:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1918 states have (on average 1.6058394160583942) internal successors, (3080), 1923 states have internal predecessors, (3080), 397 states have call successors, (397), 15 states have call predecessors, (397), 19 states have return successors, (444), 396 states have call predecessors, (444), 396 states have call successors, (444) [2022-11-25 16:47:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3921 transitions. [2022-11-25 16:47:20,683 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3921 transitions. Word has length 119 [2022-11-25 16:47:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:20,684 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3921 transitions. [2022-11-25 16:47:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3921 transitions. [2022-11-25 16:47:20,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-25 16:47:20,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:20,695 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:20,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 16:47:20,695 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash 488386317, now seen corresponding path program 1 times [2022-11-25 16:47:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:20,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331073810] [2022-11-25 16:47:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 16:47:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 16:47:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 16:47:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 16:47:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 16:47:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 16:47:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:20,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:20,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331073810] [2022-11-25 16:47:20,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331073810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:20,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:20,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:47:20,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658176875] [2022-11-25 16:47:20,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:20,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:20,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:20,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:20,849 INFO L87 Difference]: Start difference. First operand 2335 states and 3921 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:22,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:22,855 INFO L93 Difference]: Finished difference Result 5622 states and 9619 transitions. [2022-11-25 16:47:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:47:22,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-11-25 16:47:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:22,879 INFO L225 Difference]: With dead ends: 5622 [2022-11-25 16:47:22,879 INFO L226 Difference]: Without dead ends: 3772 [2022-11-25 16:47:22,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:22,886 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 783 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:22,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 866 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 16:47:22,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2022-11-25 16:47:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 3629. [2022-11-25 16:47:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 3033 states have (on average 1.6083086053412463) internal successors, (4878), 3038 states have internal predecessors, (4878), 576 states have call successors, (576), 15 states have call predecessors, (576), 19 states have return successors, (649), 575 states have call predecessors, (649), 575 states have call successors, (649) [2022-11-25 16:47:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 6103 transitions. [2022-11-25 16:47:23,396 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 6103 transitions. Word has length 120 [2022-11-25 16:47:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:23,397 INFO L495 AbstractCegarLoop]: Abstraction has 3629 states and 6103 transitions. [2022-11-25 16:47:23,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 6103 transitions. [2022-11-25 16:47:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 16:47:23,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:23,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:23,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 16:47:23,411 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:23,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:23,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2038387656, now seen corresponding path program 1 times [2022-11-25 16:47:23,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:23,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613913023] [2022-11-25 16:47:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:23,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 16:47:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 16:47:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 16:47:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 16:47:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 16:47:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:47:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:23,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:23,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613913023] [2022-11-25 16:47:23,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613913023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:23,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:23,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:47:23,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213986698] [2022-11-25 16:47:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:23,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:23,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:23,545 INFO L87 Difference]: Start difference. First operand 3629 states and 6103 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:25,763 INFO L93 Difference]: Finished difference Result 8725 states and 14983 transitions. [2022-11-25 16:47:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:47:25,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-11-25 16:47:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:25,795 INFO L225 Difference]: With dead ends: 8725 [2022-11-25 16:47:25,795 INFO L226 Difference]: Without dead ends: 5913 [2022-11-25 16:47:25,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:25,807 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 781 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:25,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 894 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 16:47:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5913 states. [2022-11-25 16:47:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5913 to 5770. [2022-11-25 16:47:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 4798 states have (on average 1.6015006252605253) internal successors, (7684), 4803 states have internal predecessors, (7684), 952 states have call successors, (952), 15 states have call predecessors, (952), 19 states have return successors, (1069), 951 states have call predecessors, (1069), 951 states have call successors, (1069) [2022-11-25 16:47:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 9705 transitions. [2022-11-25 16:47:26,685 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 9705 transitions. Word has length 121 [2022-11-25 16:47:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:26,685 INFO L495 AbstractCegarLoop]: Abstraction has 5770 states and 9705 transitions. [2022-11-25 16:47:26,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 9705 transitions. [2022-11-25 16:47:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-25 16:47:26,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:26,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:26,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 16:47:26,704 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:26,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash -739723567, now seen corresponding path program 1 times [2022-11-25 16:47:26,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:26,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193734624] [2022-11-25 16:47:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:26,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 16:47:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 16:47:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 16:47:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 16:47:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 16:47:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 16:47:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:26,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:26,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193734624] [2022-11-25 16:47:26,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193734624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:26,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:26,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:47:26,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877798084] [2022-11-25 16:47:26,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:26,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:26,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:26,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:26,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:26,836 INFO L87 Difference]: Start difference. First operand 5770 states and 9705 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:29,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:29,268 INFO L93 Difference]: Finished difference Result 14342 states and 24596 transitions. [2022-11-25 16:47:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:47:29,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-11-25 16:47:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:29,326 INFO L225 Difference]: With dead ends: 14342 [2022-11-25 16:47:29,326 INFO L226 Difference]: Without dead ends: 9791 [2022-11-25 16:47:29,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:29,343 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 779 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:29,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 870 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 16:47:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9791 states. [2022-11-25 16:47:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9791 to 9648. [2022-11-25 16:47:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9648 states, 8070 states have (on average 1.5988847583643122) internal successors, (12903), 8075 states have internal predecessors, (12903), 1558 states have call successors, (1558), 15 states have call predecessors, (1558), 19 states have return successors, (1753), 1557 states have call predecessors, (1753), 1557 states have call successors, (1753) [2022-11-25 16:47:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9648 states to 9648 states and 16214 transitions. [2022-11-25 16:47:30,665 INFO L78 Accepts]: Start accepts. Automaton has 9648 states and 16214 transitions. Word has length 122 [2022-11-25 16:47:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:30,666 INFO L495 AbstractCegarLoop]: Abstraction has 9648 states and 16214 transitions. [2022-11-25 16:47:30,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9648 states and 16214 transitions. [2022-11-25 16:47:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-25 16:47:30,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:30,695 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:30,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 16:47:30,695 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1028081462, now seen corresponding path program 1 times [2022-11-25 16:47:30,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:30,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668920066] [2022-11-25 16:47:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:30,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 16:47:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 16:47:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 16:47:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 16:47:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 16:47:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 16:47:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:30,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:30,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668920066] [2022-11-25 16:47:30,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668920066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:30,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:30,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:47:30,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853049115] [2022-11-25 16:47:30,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:30,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:30,843 INFO L87 Difference]: Start difference. First operand 9648 states and 16214 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:33,944 INFO L93 Difference]: Finished difference Result 25051 states and 42877 transitions. [2022-11-25 16:47:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:47:33,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-11-25 16:47:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:34,017 INFO L225 Difference]: With dead ends: 25051 [2022-11-25 16:47:34,018 INFO L226 Difference]: Without dead ends: 17104 [2022-11-25 16:47:34,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:34,045 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 777 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:34,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 909 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 16:47:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17104 states. [2022-11-25 16:47:36,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17104 to 16961. [2022-11-25 16:47:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16961 states, 14180 states have (on average 1.5901974612129761) internal successors, (22549), 14185 states have internal predecessors, (22549), 2761 states have call successors, (2761), 15 states have call predecessors, (2761), 19 states have return successors, (3100), 2760 states have call predecessors, (3100), 2760 states have call successors, (3100) [2022-11-25 16:47:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16961 states to 16961 states and 28410 transitions. [2022-11-25 16:47:36,200 INFO L78 Accepts]: Start accepts. Automaton has 16961 states and 28410 transitions. Word has length 123 [2022-11-25 16:47:36,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:36,201 INFO L495 AbstractCegarLoop]: Abstraction has 16961 states and 28410 transitions. [2022-11-25 16:47:36,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:36,201 INFO L276 IsEmpty]: Start isEmpty. Operand 16961 states and 28410 transitions. [2022-11-25 16:47:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 16:47:36,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:36,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:36,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 16:47:36,238 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:36,239 INFO L85 PathProgramCache]: Analyzing trace with hash 558503570, now seen corresponding path program 1 times [2022-11-25 16:47:36,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:36,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646057375] [2022-11-25 16:47:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 16:47:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 16:47:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 16:47:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 16:47:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 16:47:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 16:47:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:36,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:36,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646057375] [2022-11-25 16:47:36,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646057375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:36,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:36,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:47:36,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977998047] [2022-11-25 16:47:36,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:36,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:36,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:36,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:36,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:36,402 INFO L87 Difference]: Start difference. First operand 16961 states and 28410 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:41,195 INFO L93 Difference]: Finished difference Result 45027 states and 76890 transitions. [2022-11-25 16:47:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:47:41,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-11-25 16:47:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:41,352 INFO L225 Difference]: With dead ends: 45027 [2022-11-25 16:47:41,352 INFO L226 Difference]: Without dead ends: 30444 [2022-11-25 16:47:41,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:41,401 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 777 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:41,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 868 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 16:47:41,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30444 states. [2022-11-25 16:47:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30444 to 30301. [2022-11-25 16:47:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30301 states, 25481 states have (on average 1.5859660138927043) internal successors, (40412), 25486 states have internal predecessors, (40412), 4800 states have call successors, (4800), 15 states have call predecessors, (4800), 19 states have return successors, (5413), 4799 states have call predecessors, (5413), 4799 states have call successors, (5413) [2022-11-25 16:47:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30301 states to 30301 states and 50625 transitions. [2022-11-25 16:47:44,992 INFO L78 Accepts]: Start accepts. Automaton has 30301 states and 50625 transitions. Word has length 124 [2022-11-25 16:47:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:44,993 INFO L495 AbstractCegarLoop]: Abstraction has 30301 states and 50625 transitions. [2022-11-25 16:47:44,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 30301 states and 50625 transitions. [2022-11-25 16:47:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-25 16:47:45,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:45,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:45,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 16:47:45,023 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash 678638104, now seen corresponding path program 1 times [2022-11-25 16:47:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:45,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741344222] [2022-11-25 16:47:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:45,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 16:47:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 16:47:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 16:47:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 16:47:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 16:47:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 16:47:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 16:47:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 16:47:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 16:47:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 16:47:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 16:47:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 16:47:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:47:45,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:45,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741344222] [2022-11-25 16:47:45,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741344222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:45,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:45,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:47:45,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050809957] [2022-11-25 16:47:45,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:45,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:45,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:45,171 INFO L87 Difference]: Start difference. First operand 30301 states and 50625 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 16:47:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:51,922 INFO L93 Difference]: Finished difference Result 82764 states and 140414 transitions. [2022-11-25 16:47:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:47:51,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-11-25 16:47:51,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:52,207 INFO L225 Difference]: With dead ends: 82764 [2022-11-25 16:47:52,207 INFO L226 Difference]: Without dead ends: 55653 [2022-11-25 16:47:52,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:47:52,287 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 775 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:52,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 874 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 16:47:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55653 states.