./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product31.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_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/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_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/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_8804a652-81d5-47a3-a547-71a287af68bc/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 bad89116a36bb46e02a3fc807805b2b6d03550190d8073d361f25c2754b15f25 --- 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 18:11:09,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:11:09,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:11:09,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:11:09,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:11:09,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:11:09,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:11:09,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:11:09,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:11:09,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:11:09,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:11:09,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:11:09,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:11:09,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:11:09,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:11:09,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:11:09,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:11:09,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:11:09,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:11:09,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:11:09,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:11:09,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:11:09,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:11:09,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:11:09,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:11:09,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:11:09,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:11:09,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:11:09,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:11:09,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:11:09,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:11:09,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:11:09,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:11:09,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:11:09,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:11:09,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:11:09,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:11:09,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:11:09,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:11:09,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:11:09,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:11:09,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:11:10,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:11:10,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:11:10,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:11:10,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:11:10,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:11:10,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:11:10,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:11:10,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:11:10,005 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:11:10,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:11:10,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:11:10,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:11:10,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:11:10,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:11:10,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:11:10,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:11:10,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:11:10,008 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:11:10,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:11:10,008 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:11:10,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:11:10,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:11:10,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:11:10,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:11:10,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:11:10,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:11:10,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:11:10,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:11:10,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:11:10,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:11:10,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:11:10,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:11:10,012 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:11:10,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:11:10,013 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_8804a652-81d5-47a3-a547-71a287af68bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad89116a36bb46e02a3fc807805b2b6d03550190d8073d361f25c2754b15f25 [2022-11-25 18:11:10,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:11:10,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:11:10,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:11:10,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:11:10,353 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:11:10,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/email_spec6_product31.cil.c [2022-11-25 18:11:13,350 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:11:13,737 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:11:13,739 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/sv-benchmarks/c/product-lines/email_spec6_product31.cil.c [2022-11-25 18:11:13,763 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/data/0b4386cd1/f9b625d8b12949a98c199873aacd0d73/FLAG9a700c879 [2022-11-25 18:11:13,783 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/data/0b4386cd1/f9b625d8b12949a98c199873aacd0d73 [2022-11-25 18:11:13,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:11:13,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:11:13,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:11:13,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:11:13,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:11:13,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:13" (1/1) ... [2022-11-25 18:11:13,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f53e52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:13, skipping insertion in model container [2022-11-25 18:11:13,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:13" (1/1) ... [2022-11-25 18:11:13,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:11:13,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:11:14,345 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_8804a652-81d5-47a3-a547-71a287af68bc/sv-benchmarks/c/product-lines/email_spec6_product31.cil.c[31008,31021] [2022-11-25 18:11:14,519 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,521 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,526 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,563 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,568 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,588 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,591 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,592 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:11:14,631 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:11:14,718 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_8804a652-81d5-47a3-a547-71a287af68bc/sv-benchmarks/c/product-lines/email_spec6_product31.cil.c[31008,31021] [2022-11-25 18:11:14,749 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,752 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,754 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,760 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,763 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,786 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,789 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,790 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:11:14,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:11:14,842 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:11:14,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14 WrapperNode [2022-11-25 18:11:14,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:11:14,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:11:14,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:11:14,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:11:14,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:14,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:14,992 INFO L138 Inliner]: procedures = 132, calls = 225, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1045 [2022-11-25 18:11:14,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:11:14,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:11:14,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:11:14,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:11:15,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:15,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:15,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:15,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:15,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:15,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:15,063 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:15,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:15,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:11:15,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:11:15,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:11:15,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:11:15,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (1/1) ... [2022-11-25 18:11:15,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:11:15,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:15,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:11:15,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:11:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-25 18:11:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-25 18:11:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-25 18:11:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-25 18:11:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-25 18:11:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-25 18:11:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 18:11:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 18:11:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 18:11:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 18:11:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 18:11:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 18:11:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 18:11:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 18:11:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-25 18:11:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-25 18:11:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-25 18:11:15,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-25 18:11:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 18:11:15,175 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 18:11:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 18:11:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 18:11:15,176 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 18:11:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 18:11:15,176 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 18:11:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:11:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-25 18:11:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-25 18:11:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-25 18:11:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-25 18:11:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 18:11:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 18:11:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 18:11:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 18:11:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 18:11:15,178 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 18:11:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-25 18:11:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-25 18:11:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 18:11:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 18:11:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-25 18:11:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-25 18:11:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 18:11:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 18:11:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 18:11:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 18:11:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:11:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 18:11:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 18:11:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:11:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:11:15,461 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:11:15,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:11:16,425 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:11:16,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:11:16,436 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:11:16,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:16 BoogieIcfgContainer [2022-11-25 18:11:16,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:11:16,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:11:16,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:11:16,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:11:16,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:11:13" (1/3) ... [2022-11-25 18:11:16,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626dbbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:16, skipping insertion in model container [2022-11-25 18:11:16,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14" (2/3) ... [2022-11-25 18:11:16,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626dbbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:16, skipping insertion in model container [2022-11-25 18:11:16,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:16" (3/3) ... [2022-11-25 18:11:16,447 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product31.cil.c [2022-11-25 18:11:16,467 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:11:16,467 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:11:16,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:11:16,547 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;@4890e787, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:11:16,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:11:16,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-25 18:11:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-25 18:11:16,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:16,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:16,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:16,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash -937278279, now seen corresponding path program 1 times [2022-11-25 18:11:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:16,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843104189] [2022-11-25 18:11:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:16,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:11:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:11:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:11:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 18:11:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 18:11:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 18:11:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:11:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 18:11:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 18:11:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 18:11:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 18:11:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 18:11:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 18:11:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 18:11:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:11:17,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:17,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843104189] [2022-11-25 18:11:17,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843104189] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:11:17,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845645686] [2022-11-25 18:11:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:17,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:17,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:17,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:17,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:11:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:17,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 18:11:17,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 18:11:18,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:18,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845645686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:18,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:11:18,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-25 18:11:18,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266128888] [2022-11-25 18:11:18,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:18,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:11:18,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:18,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:11:18,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:11:18,084 INFO L87 Difference]: Start difference. First operand has 374 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:18,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:18,159 INFO L93 Difference]: Finished difference Result 594 states and 860 transitions. [2022-11-25 18:11:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:11:18,161 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2022-11-25 18:11:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:18,180 INFO L225 Difference]: With dead ends: 594 [2022-11-25 18:11:18,181 INFO L226 Difference]: Without dead ends: 367 [2022-11-25 18:11:18,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 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 18:11:18,190 INFO L413 NwaCegarLoop]: 549 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, 549 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 18:11:18,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:11:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-25 18:11:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-11-25 18:11:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.4893617021276595) internal successors, (420), 285 states have internal predecessors, (420), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-25 18:11:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 541 transitions. [2022-11-25 18:11:18,291 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 541 transitions. Word has length 126 [2022-11-25 18:11:18,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:18,294 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 541 transitions. [2022-11-25 18:11:18,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:18,295 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 541 transitions. [2022-11-25 18:11:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 18:11:18,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:18,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:18,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 18:11:18,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 18:11:18,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash -337301568, now seen corresponding path program 1 times [2022-11-25 18:11:18,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:18,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777453720] [2022-11-25 18:11:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:18,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:11:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:11:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:11:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:11:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 18:11:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 18:11:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 18:11:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:11:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 18:11:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 18:11:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 18:11:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 18:11:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 18:11:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 18:11:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:11:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:18,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777453720] [2022-11-25 18:11:18,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777453720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:11:18,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378025298] [2022-11-25 18:11:18,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:18,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:18,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:18,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:19,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:11:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:19,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:11:19,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 18:11:19,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:19,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378025298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:19,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:11:19,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 18:11:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364888929] [2022-11-25 18:11:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:19,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:19,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:11:19,460 INFO L87 Difference]: Start difference. First operand 367 states and 541 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:19,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:19,523 INFO L93 Difference]: Finished difference Result 584 states and 841 transitions. [2022-11-25 18:11:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:19,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2022-11-25 18:11:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:19,527 INFO L225 Difference]: With dead ends: 584 [2022-11-25 18:11:19,532 INFO L226 Difference]: Without dead ends: 370 [2022-11-25 18:11:19,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 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 18:11:19,536 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1076 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 18:11:19,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1076 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:11:19,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-25 18:11:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2022-11-25 18:11:19,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 284 states have (on average 1.4859154929577465) internal successors, (422), 287 states have internal predecessors, (422), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-25 18:11:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 543 transitions. [2022-11-25 18:11:19,569 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 543 transitions. Word has length 127 [2022-11-25 18:11:19,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:19,570 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 543 transitions. [2022-11-25 18:11:19,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 543 transitions. [2022-11-25 18:11:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-25 18:11:19,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:19,573 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:19,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 18:11:19,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:19,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:19,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2047662697, now seen corresponding path program 1 times [2022-11-25 18:11:19,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:19,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580946726] [2022-11-25 18:11:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:19,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:11:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:11:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:11:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 18:11:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 18:11:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 18:11:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:11:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 18:11:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 18:11:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 18:11:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 18:11:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 18:11:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 18:11:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 18:11:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 18:11:20,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:20,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580946726] [2022-11-25 18:11:20,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580946726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:11:20,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146411538] [2022-11-25 18:11:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:20,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:20,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:20,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:20,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:11:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:11:20,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 18:11:20,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:20,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146411538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:20,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:11:20,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 18:11:20,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81584785] [2022-11-25 18:11:20,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:20,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:20,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:20,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:20,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:11:20,544 INFO L87 Difference]: Start difference. First operand 369 states and 543 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:20,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:20,610 INFO L93 Difference]: Finished difference Result 768 states and 1145 transitions. [2022-11-25 18:11:20,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:20,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 133 [2022-11-25 18:11:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:20,617 INFO L225 Difference]: With dead ends: 768 [2022-11-25 18:11:20,617 INFO L226 Difference]: Without dead ends: 426 [2022-11-25 18:11:20,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 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 18:11:20,622 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 107 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1054 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 18:11:20,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1054 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:11:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-25 18:11:20,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 418. [2022-11-25 18:11:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 325 states have internal predecessors, (484), 72 states have call successors, (72), 23 states have call predecessors, (72), 23 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-25 18:11:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 627 transitions. [2022-11-25 18:11:20,678 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 627 transitions. Word has length 133 [2022-11-25 18:11:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:20,679 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 627 transitions. [2022-11-25 18:11:20,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 627 transitions. [2022-11-25 18:11:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 18:11:20,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:20,683 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:20,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 18:11:20,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:20,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:20,890 INFO L85 PathProgramCache]: Analyzing trace with hash 790744338, now seen corresponding path program 1 times [2022-11-25 18:11:20,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:20,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480681274] [2022-11-25 18:11:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:20,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 18:11:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 18:11:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:11:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 18:11:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:11:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:11:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 18:11:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 18:11:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 18:11:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 18:11:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 18:11:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 18:11:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 18:11:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 18:11:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 18:11:21,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:21,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480681274] [2022-11-25 18:11:21,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480681274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:11:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114026597] [2022-11-25 18:11:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:21,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:21,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:21,186 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:21,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:11:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:21,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:11:21,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 18:11:21,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:21,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114026597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:21,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:11:21,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-25 18:11:21,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094393293] [2022-11-25 18:11:21,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:21,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:21,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:11:21,590 INFO L87 Difference]: Start difference. First operand 418 states and 627 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 18:11:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:21,669 INFO L93 Difference]: Finished difference Result 827 states and 1244 transitions. [2022-11-25 18:11:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:21,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 134 [2022-11-25 18:11:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:21,674 INFO L225 Difference]: With dead ends: 827 [2022-11-25 18:11:21,675 INFO L226 Difference]: Without dead ends: 420 [2022-11-25 18:11:21,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 161 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 18:11:21,680 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 125 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1983 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 18:11:21,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1983 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:11:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-25 18:11:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2022-11-25 18:11:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 323 states have (on average 1.501547987616099) internal successors, (485), 327 states have internal predecessors, (485), 72 states have call successors, (72), 23 states have call predecessors, (72), 24 states have return successors, (73), 71 states have call predecessors, (73), 71 states have call successors, (73) [2022-11-25 18:11:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 630 transitions. [2022-11-25 18:11:21,716 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 630 transitions. Word has length 134 [2022-11-25 18:11:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:21,717 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 630 transitions. [2022-11-25 18:11:21,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 18:11:21,717 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 630 transitions. [2022-11-25 18:11:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-25 18:11:21,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:21,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:21,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:21,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:21,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:21,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:21,929 INFO L85 PathProgramCache]: Analyzing trace with hash -610465485, now seen corresponding path program 1 times [2022-11-25 18:11:21,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:21,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799272788] [2022-11-25 18:11:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:21,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 18:11:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:11:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 18:11:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 18:11:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 18:11:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 18:11:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 18:11:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:11:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:11:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 18:11:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 18:11:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 18:11:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 18:11:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 18:11:22,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799272788] [2022-11-25 18:11:22,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799272788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:11:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586868736] [2022-11-25 18:11:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:22,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:22,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:22,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:22,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:11:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:11:22,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 18:11:22,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:22,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586868736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:22,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:11:22,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-25 18:11:22,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839782499] [2022-11-25 18:11:22,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:22,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:22,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:22,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:22,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:11:22,633 INFO L87 Difference]: Start difference. First operand 420 states and 630 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 18:11:22,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:22,719 INFO L93 Difference]: Finished difference Result 829 states and 1249 transitions. [2022-11-25 18:11:22,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:22,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2022-11-25 18:11:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:22,723 INFO L225 Difference]: With dead ends: 829 [2022-11-25 18:11:22,724 INFO L226 Difference]: Without dead ends: 422 [2022-11-25 18:11:22,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 161 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 18:11:22,726 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 124 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1972 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 18:11:22,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1972 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:11:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-25 18:11:22,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-11-25 18:11:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 324 states have (on average 1.5) internal successors, (486), 329 states have internal predecessors, (486), 72 states have call successors, (72), 23 states have call predecessors, (72), 25 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2022-11-25 18:11:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 636 transitions. [2022-11-25 18:11:22,757 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 636 transitions. Word has length 135 [2022-11-25 18:11:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:22,758 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 636 transitions. [2022-11-25 18:11:22,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 18:11:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 636 transitions. [2022-11-25 18:11:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-25 18:11:22,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:22,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:22,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:22,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:22,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash -304652879, now seen corresponding path program 1 times [2022-11-25 18:11:22,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:22,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554991145] [2022-11-25 18:11:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:22,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 18:11:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 18:11:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 18:11:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 18:11:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 18:11:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 18:11:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 18:11:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 18:11:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 18:11:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 18:11:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 18:11:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 18:11:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 18:11:23,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:23,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554991145] [2022-11-25 18:11:23,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554991145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:23,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:23,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 18:11:23,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702419321] [2022-11-25 18:11:23,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:23,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:11:23,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:11:23,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:11:23,255 INFO L87 Difference]: Start difference. First operand 422 states and 636 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 18:11:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:26,085 INFO L93 Difference]: Finished difference Result 1011 states and 1522 transitions. [2022-11-25 18:11:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:11:26,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 136 [2022-11-25 18:11:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:26,090 INFO L225 Difference]: With dead ends: 1011 [2022-11-25 18:11:26,092 INFO L226 Difference]: Without dead ends: 612 [2022-11-25 18:11:26,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 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 18:11:26,097 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1317 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:26,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 988 Invalid, 3481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 2948 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 18:11:26,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-25 18:11:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 422. [2022-11-25 18:11:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 324 states have (on average 1.5) internal successors, (486), 329 states have internal predecessors, (486), 72 states have call successors, (72), 23 states have call predecessors, (72), 25 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2022-11-25 18:11:26,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 635 transitions. [2022-11-25 18:11:26,163 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 635 transitions. Word has length 136 [2022-11-25 18:11:26,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:26,164 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 635 transitions. [2022-11-25 18:11:26,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 18:11:26,164 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 635 transitions. [2022-11-25 18:11:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-25 18:11:26,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:26,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:26,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:11:26,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:26,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1755102132, now seen corresponding path program 2 times [2022-11-25 18:11:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:26,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852363441] [2022-11-25 18:11:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:26,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 18:11:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 18:11:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 18:11:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 18:11:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 18:11:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 18:11:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 18:11:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 18:11:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 18:11:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 18:11:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:11:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 18:11:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 18:11:26,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:26,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852363441] [2022-11-25 18:11:26,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852363441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:26,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:26,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 18:11:26,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517775669] [2022-11-25 18:11:26,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:26,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:11:26,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:26,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:11:26,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:11:26,432 INFO L87 Difference]: Start difference. First operand 422 states and 635 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 18:11:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:29,272 INFO L93 Difference]: Finished difference Result 1013 states and 1525 transitions. [2022-11-25 18:11:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:11:29,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 137 [2022-11-25 18:11:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:29,277 INFO L225 Difference]: With dead ends: 1013 [2022-11-25 18:11:29,277 INFO L226 Difference]: Without dead ends: 614 [2022-11-25 18:11:29,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 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 18:11:29,279 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1312 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:29,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 988 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 18:11:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-11-25 18:11:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 424. [2022-11-25 18:11:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 325 states have (on average 1.4984615384615385) internal successors, (487), 331 states have internal predecessors, (487), 72 states have call successors, (72), 23 states have call predecessors, (72), 26 states have return successors, (79), 71 states have call predecessors, (79), 71 states have call successors, (79) [2022-11-25 18:11:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 638 transitions. [2022-11-25 18:11:29,322 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 638 transitions. Word has length 137 [2022-11-25 18:11:29,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:29,322 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 638 transitions. [2022-11-25 18:11:29,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 18:11:29,323 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 638 transitions. [2022-11-25 18:11:29,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-25 18:11:29,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:29,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:29,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:11:29,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:29,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:29,326 INFO L85 PathProgramCache]: Analyzing trace with hash 811193644, now seen corresponding path program 1 times [2022-11-25 18:11:29,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:29,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579111568] [2022-11-25 18:11:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:29,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 18:11:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:11:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:11:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 18:11:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 18:11:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 18:11:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 18:11:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 18:11:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 18:11:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 18:11:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 18:11:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 18:11:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:29,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579111568] [2022-11-25 18:11:29,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579111568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:29,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:29,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 18:11:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108524878] [2022-11-25 18:11:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:29,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:11:29,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:11:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:11:29,620 INFO L87 Difference]: Start difference. First operand 424 states and 638 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-25 18:11:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:33,282 INFO L93 Difference]: Finished difference Result 1011 states and 1520 transitions. [2022-11-25 18:11:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:11:33,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 138 [2022-11-25 18:11:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:33,287 INFO L225 Difference]: With dead ends: 1011 [2022-11-25 18:11:33,287 INFO L226 Difference]: Without dead ends: 614 [2022-11-25 18:11:33,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 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 18:11:33,291 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1436 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 5489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:33,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 1290 Invalid, 5489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [575 Valid, 4914 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-25 18:11:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-11-25 18:11:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 424. [2022-11-25 18:11:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 325 states have (on average 1.4984615384615385) internal successors, (487), 331 states have internal predecessors, (487), 72 states have call successors, (72), 23 states have call predecessors, (72), 26 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2022-11-25 18:11:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 637 transitions. [2022-11-25 18:11:33,338 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 637 transitions. Word has length 138 [2022-11-25 18:11:33,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:33,339 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 637 transitions. [2022-11-25 18:11:33,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-25 18:11:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 637 transitions. [2022-11-25 18:11:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-25 18:11:33,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:33,342 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:33,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:11:33,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:33,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash 169071964, now seen corresponding path program 2 times [2022-11-25 18:11:33,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:33,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461625393] [2022-11-25 18:11:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:33,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 18:11:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 18:11:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:11:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 18:11:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 18:11:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 18:11:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 18:11:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 18:11:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 18:11:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 18:11:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 18:11:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 18:11:33,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:33,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461625393] [2022-11-25 18:11:33,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461625393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:33,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:33,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 18:11:33,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047548134] [2022-11-25 18:11:33,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:33,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:11:33,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:33,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:11:33,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:11:33,635 INFO L87 Difference]: Start difference. First operand 424 states and 637 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-25 18:11:37,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:37,402 INFO L93 Difference]: Finished difference Result 1013 states and 1526 transitions. [2022-11-25 18:11:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:11:37,403 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 139 [2022-11-25 18:11:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:37,408 INFO L225 Difference]: With dead ends: 1013 [2022-11-25 18:11:37,408 INFO L226 Difference]: Without dead ends: 616 [2022-11-25 18:11:37,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 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 18:11:37,412 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1431 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4940 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 5510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 4940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:37,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1290 Invalid, 5510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 4940 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-25 18:11:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-11-25 18:11:37,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 426. [2022-11-25 18:11:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 326 states have (on average 1.4969325153374233) internal successors, (488), 333 states have internal predecessors, (488), 72 states have call successors, (72), 23 states have call predecessors, (72), 27 states have return successors, (83), 71 states have call predecessors, (83), 71 states have call successors, (83) [2022-11-25 18:11:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 643 transitions. [2022-11-25 18:11:37,467 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 643 transitions. Word has length 139 [2022-11-25 18:11:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:37,469 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 643 transitions. [2022-11-25 18:11:37,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-25 18:11:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 643 transitions. [2022-11-25 18:11:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-25 18:11:37,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:37,472 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:37,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:11:37,472 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:37,473 INFO L85 PathProgramCache]: Analyzing trace with hash -903691641, now seen corresponding path program 1 times [2022-11-25 18:11:37,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:37,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372262018] [2022-11-25 18:11:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:37,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 18:11:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 18:11:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 18:11:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 18:11:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 18:11:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 18:11:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 18:11:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 18:11:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 18:11:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 18:11:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:11:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:37,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:37,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372262018] [2022-11-25 18:11:37,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372262018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:11:37,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769222659] [2022-11-25 18:11:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:37,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:11:37,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:37,658 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:11:37,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:11:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:37,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:11:37,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:38,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:38,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769222659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:38,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:11:38,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-11-25 18:11:38,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159890560] [2022-11-25 18:11:38,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:38,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 18:11:38,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 18:11:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:11:38,153 INFO L87 Difference]: Start difference. First operand 426 states and 643 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 18:11:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:41,137 INFO L93 Difference]: Finished difference Result 1182 states and 1854 transitions. [2022-11-25 18:11:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:11:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 140 [2022-11-25 18:11:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:41,145 INFO L225 Difference]: With dead ends: 1182 [2022-11-25 18:11:41,145 INFO L226 Difference]: Without dead ends: 968 [2022-11-25 18:11:41,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:11:41,149 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1605 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:41,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 1471 Invalid, 3392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 18:11:41,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-25 18:11:41,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 754. [2022-11-25 18:11:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 590 states have (on average 1.5694915254237287) internal successors, (926), 597 states have internal predecessors, (926), 136 states have call successors, (136), 23 states have call predecessors, (136), 27 states have return successors, (157), 135 states have call predecessors, (157), 135 states have call successors, (157) [2022-11-25 18:11:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1219 transitions. [2022-11-25 18:11:41,253 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1219 transitions. Word has length 140 [2022-11-25 18:11:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:41,253 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1219 transitions. [2022-11-25 18:11:41,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (39), 6 states have call predecessors, (39), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-25 18:11:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1219 transitions. [2022-11-25 18:11:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-25 18:11:41,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:41,258 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:41,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 18:11:41,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8804a652-81d5-47a3-a547-71a287af68bc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:11:41,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:41,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1843294026, now seen corresponding path program 1 times [2022-11-25 18:11:41,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:41,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630753934] [2022-11-25 18:11:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 18:11:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 18:11:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 18:11:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 18:11:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:11:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 18:11:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 18:11:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 18:11:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 18:11:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:11:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 18:11:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:41,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630753934] [2022-11-25 18:11:41,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630753934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:41,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:41,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:11:41,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209585126] [2022-11-25 18:11:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:41,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:11:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:11:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:11:41,601 INFO L87 Difference]: Start difference. First operand 754 states and 1219 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:43,794 INFO L93 Difference]: Finished difference Result 1963 states and 3225 transitions. [2022-11-25 18:11:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:11:43,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-11-25 18:11:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:43,808 INFO L225 Difference]: With dead ends: 1963 [2022-11-25 18:11:43,808 INFO L226 Difference]: Without dead ends: 1277 [2022-11-25 18:11:43,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:11:43,812 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1296 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:43,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 895 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 18:11:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2022-11-25 18:11:43,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1079. [2022-11-25 18:11:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 851 states have (on average 1.5875440658049353) internal successors, (1351), 858 states have internal predecessors, (1351), 200 states have call successors, (200), 23 states have call predecessors, (200), 27 states have return successors, (231), 199 states have call predecessors, (231), 199 states have call successors, (231) [2022-11-25 18:11:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1782 transitions. [2022-11-25 18:11:43,916 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1782 transitions. Word has length 146 [2022-11-25 18:11:43,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:43,917 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1782 transitions. [2022-11-25 18:11:43,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1782 transitions. [2022-11-25 18:11:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-25 18:11:43,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:43,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:43,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:11:43,923 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:43,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:43,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1634004674, now seen corresponding path program 1 times [2022-11-25 18:11:43,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:43,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679114102] [2022-11-25 18:11:43,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:43,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 18:11:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:11:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 18:11:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 18:11:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 18:11:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 18:11:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 18:11:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 18:11:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 18:11:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-25 18:11:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-25 18:11:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:44,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:44,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679114102] [2022-11-25 18:11:44,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679114102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:44,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:44,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:11:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690241832] [2022-11-25 18:11:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:44,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:11:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:11:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:11:44,067 INFO L87 Difference]: Start difference. First operand 1079 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:46,355 INFO L93 Difference]: Finished difference Result 2743 states and 4574 transitions. [2022-11-25 18:11:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:11:46,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2022-11-25 18:11:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:46,367 INFO L225 Difference]: With dead ends: 2743 [2022-11-25 18:11:46,368 INFO L226 Difference]: Without dead ends: 1785 [2022-11-25 18:11:46,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:11:46,373 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1294 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:46,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 829 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 18:11:46,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2022-11-25 18:11:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1587. [2022-11-25 18:11:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1264 states have (on average 1.5996835443037976) internal successors, (2022), 1271 states have internal predecessors, (2022), 295 states have call successors, (295), 23 states have call predecessors, (295), 27 states have return successors, (326), 294 states have call predecessors, (326), 294 states have call successors, (326) [2022-11-25 18:11:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2643 transitions. [2022-11-25 18:11:46,584 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2643 transitions. Word has length 147 [2022-11-25 18:11:46,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:46,584 INFO L495 AbstractCegarLoop]: Abstraction has 1587 states and 2643 transitions. [2022-11-25 18:11:46,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2643 transitions. [2022-11-25 18:11:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-25 18:11:46,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:46,595 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:46,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:11:46,595 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:46,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1281911896, now seen corresponding path program 1 times [2022-11-25 18:11:46,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:46,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334526735] [2022-11-25 18:11:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:46,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:11:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:11:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 18:11:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 18:11:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 18:11:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 18:11:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 18:11:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 18:11:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 18:11:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-25 18:11:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-25 18:11:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:46,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:46,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334526735] [2022-11-25 18:11:46,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334526735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:46,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:46,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:11:46,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176442869] [2022-11-25 18:11:46,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:46,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:11:46,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:46,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:11:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:11:46,743 INFO L87 Difference]: Start difference. First operand 1587 states and 2643 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:49,017 INFO L93 Difference]: Finished difference Result 3895 states and 6583 transitions. [2022-11-25 18:11:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:11:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2022-11-25 18:11:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:49,035 INFO L225 Difference]: With dead ends: 3895 [2022-11-25 18:11:49,035 INFO L226 Difference]: Without dead ends: 2554 [2022-11-25 18:11:49,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:11:49,042 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1292 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:49,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 829 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 18:11:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-11-25 18:11:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2356. [2022-11-25 18:11:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 1910 states have (on average 1.6089005235602094) internal successors, (3073), 1917 states have internal predecessors, (3073), 418 states have call successors, (418), 23 states have call predecessors, (418), 27 states have return successors, (465), 417 states have call predecessors, (465), 417 states have call successors, (465) [2022-11-25 18:11:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3956 transitions. [2022-11-25 18:11:49,310 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3956 transitions. Word has length 148 [2022-11-25 18:11:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:49,310 INFO L495 AbstractCegarLoop]: Abstraction has 2356 states and 3956 transitions. [2022-11-25 18:11:49,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3956 transitions. [2022-11-25 18:11:49,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-25 18:11:49,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:49,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:49,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:11:49,325 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:49,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:49,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1639506049, now seen corresponding path program 1 times [2022-11-25 18:11:49,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:49,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034036694] [2022-11-25 18:11:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:49,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 18:11:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 18:11:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 18:11:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 18:11:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 18:11:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-25 18:11:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 18:11:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 18:11:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 18:11:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-25 18:11:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 18:11:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:49,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:49,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034036694] [2022-11-25 18:11:49,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034036694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:49,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:49,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:11:49,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925748916] [2022-11-25 18:11:49,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:49,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:11:49,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:11:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:11:49,486 INFO L87 Difference]: Start difference. First operand 2356 states and 3956 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:51,821 INFO L93 Difference]: Finished difference Result 5689 states and 9717 transitions. [2022-11-25 18:11:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:11:51,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2022-11-25 18:11:51,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:51,842 INFO L225 Difference]: With dead ends: 5689 [2022-11-25 18:11:51,843 INFO L226 Difference]: Without dead ends: 3783 [2022-11-25 18:11:51,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:11:51,850 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1290 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:51,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 829 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 18:11:51,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2022-11-25 18:11:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3585. [2022-11-25 18:11:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 2960 states have (on average 1.614864864864865) internal successors, (4780), 2967 states have internal predecessors, (4780), 597 states have call successors, (597), 23 states have call predecessors, (597), 27 states have return successors, (670), 596 states have call predecessors, (670), 596 states have call successors, (670) [2022-11-25 18:11:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6047 transitions. [2022-11-25 18:11:52,240 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6047 transitions. Word has length 149 [2022-11-25 18:11:52,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:52,240 INFO L495 AbstractCegarLoop]: Abstraction has 3585 states and 6047 transitions. [2022-11-25 18:11:52,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6047 transitions. [2022-11-25 18:11:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-25 18:11:52,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:52,256 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:52,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:11:52,256 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:52,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:52,257 INFO L85 PathProgramCache]: Analyzing trace with hash 445863980, now seen corresponding path program 1 times [2022-11-25 18:11:52,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:52,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315241003] [2022-11-25 18:11:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:52,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 18:11:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:11:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 18:11:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 18:11:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 18:11:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 18:11:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 18:11:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:11:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 18:11:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-25 18:11:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 18:11:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:52,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:52,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315241003] [2022-11-25 18:11:52,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315241003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:52,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:52,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:11:52,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616722918] [2022-11-25 18:11:52,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:52,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:11:52,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:52,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:11:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:11:52,403 INFO L87 Difference]: Start difference. First operand 3585 states and 6047 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:54,880 INFO L93 Difference]: Finished difference Result 8637 states and 14864 transitions. [2022-11-25 18:11:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:11:54,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2022-11-25 18:11:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:54,912 INFO L225 Difference]: With dead ends: 8637 [2022-11-25 18:11:54,912 INFO L226 Difference]: Without dead ends: 5814 [2022-11-25 18:11:54,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:11:54,923 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1288 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:54,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 860 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 18:11:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5814 states. [2022-11-25 18:11:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5814 to 5616. [2022-11-25 18:11:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5616 states, 4615 states have (on average 1.610400866738895) internal successors, (7432), 4622 states have internal predecessors, (7432), 973 states have call successors, (973), 23 states have call predecessors, (973), 27 states have return successors, (1090), 972 states have call predecessors, (1090), 972 states have call successors, (1090) [2022-11-25 18:11:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5616 states to 5616 states and 9495 transitions. [2022-11-25 18:11:55,677 INFO L78 Accepts]: Start accepts. Automaton has 5616 states and 9495 transitions. Word has length 150 [2022-11-25 18:11:55,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:55,678 INFO L495 AbstractCegarLoop]: Abstraction has 5616 states and 9495 transitions. [2022-11-25 18:11:55,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5616 states and 9495 transitions. [2022-11-25 18:11:55,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-25 18:11:55,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:55,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:55,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:11:55,706 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1000804355, now seen corresponding path program 1 times [2022-11-25 18:11:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:55,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758628822] [2022-11-25 18:11:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:55,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 18:11:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 18:11:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 18:11:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 18:11:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 18:11:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 18:11:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 18:11:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 18:11:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 18:11:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 18:11:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 18:11:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:55,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:55,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758628822] [2022-11-25 18:11:55,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758628822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:55,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:55,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:11:55,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050970574] [2022-11-25 18:11:55,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:55,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:11:55,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:11:55,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:11:55,868 INFO L87 Difference]: Start difference. First operand 5616 states and 9495 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:58,570 INFO L93 Difference]: Finished difference Result 13974 states and 24085 transitions. [2022-11-25 18:11:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:11:58,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2022-11-25 18:11:58,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:58,617 INFO L225 Difference]: With dead ends: 13974 [2022-11-25 18:11:58,618 INFO L226 Difference]: Without dead ends: 9497 [2022-11-25 18:11:58,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:11:58,633 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1286 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:58,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 835 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 18:11:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9497 states. [2022-11-25 18:11:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9497 to 9299. [2022-11-25 18:11:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9299 states, 7692 states have (on average 1.609204368174727) internal successors, (12378), 7699 states have internal predecessors, (12378), 1579 states have call successors, (1579), 23 states have call predecessors, (1579), 27 states have return successors, (1774), 1578 states have call predecessors, (1774), 1578 states have call successors, (1774) [2022-11-25 18:11:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9299 states to 9299 states and 15731 transitions. [2022-11-25 18:11:59,768 INFO L78 Accepts]: Start accepts. Automaton has 9299 states and 15731 transitions. Word has length 151 [2022-11-25 18:11:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:59,768 INFO L495 AbstractCegarLoop]: Abstraction has 9299 states and 15731 transitions. [2022-11-25 18:11:59,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:11:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9299 states and 15731 transitions. [2022-11-25 18:11:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-25 18:11:59,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:59,803 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:59,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 18:11:59,803 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:59,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash 889735870, now seen corresponding path program 1 times [2022-11-25 18:11:59,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:59,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98723224] [2022-11-25 18:11:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:59,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:11:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:11:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:11:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:11:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:11:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:11:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 18:11:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 18:11:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 18:11:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:11:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 18:11:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 18:11:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 18:11:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 18:11:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 18:11:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 18:11:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 18:11:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:11:59,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:59,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98723224] [2022-11-25 18:11:59,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98723224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:59,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:59,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:11:59,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587675189] [2022-11-25 18:11:59,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:59,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:11:59,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:59,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:11:59,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:11:59,946 INFO L87 Difference]: Start difference. First operand 9299 states and 15731 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:12:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:03,038 INFO L93 Difference]: Finished difference Result 24158 states and 41631 transitions. [2022-11-25 18:12:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:12:03,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2022-11-25 18:12:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:03,102 INFO L225 Difference]: With dead ends: 24158 [2022-11-25 18:12:03,102 INFO L226 Difference]: Without dead ends: 16450 [2022-11-25 18:12:03,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:12:03,124 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1284 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:03,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 866 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 18:12:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16450 states. [2022-11-25 18:12:04,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16450 to 16252. [2022-11-25 18:12:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16252 states, 13442 states have (on average 1.6009522392501117) internal successors, (21520), 13449 states have internal predecessors, (21520), 2782 states have call successors, (2782), 23 states have call predecessors, (2782), 27 states have return successors, (3121), 2781 states have call predecessors, (3121), 2781 states have call successors, (3121) [2022-11-25 18:12:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16252 states to 16252 states and 27423 transitions. [2022-11-25 18:12:04,862 INFO L78 Accepts]: Start accepts. Automaton has 16252 states and 27423 transitions. Word has length 152 [2022-11-25 18:12:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:04,862 INFO L495 AbstractCegarLoop]: Abstraction has 16252 states and 27423 transitions. [2022-11-25 18:12:04,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:12:04,863 INFO L276 IsEmpty]: Start isEmpty. Operand 16252 states and 27423 transitions. [2022-11-25 18:12:04,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-25 18:12:04,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:04,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:04,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 18:12:04,904 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:04,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1224471708, now seen corresponding path program 1 times [2022-11-25 18:12:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:04,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654527740] [2022-11-25 18:12:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:04,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:12:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:12:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:12:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:12:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:12:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:12:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 18:12:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 18:12:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 18:12:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 18:12:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 18:12:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 18:12:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 18:12:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 18:12:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-25 18:12:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-25 18:12:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 18:12:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:12:05,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:05,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654527740] [2022-11-25 18:12:05,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654527740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:05,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:05,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:12:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876558560] [2022-11-25 18:12:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:05,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:12:05,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:05,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:12:05,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:12:05,036 INFO L87 Difference]: Start difference. First operand 16252 states and 27423 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:12:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:09,494 INFO L93 Difference]: Finished difference Result 43124 states and 74230 transitions. [2022-11-25 18:12:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:12:09,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2022-11-25 18:12:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:09,636 INFO L225 Difference]: With dead ends: 43124 [2022-11-25 18:12:09,636 INFO L226 Difference]: Without dead ends: 29105 [2022-11-25 18:12:09,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:12:09,683 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1282 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:09,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 832 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 18:12:09,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29105 states. [2022-11-25 18:12:12,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29105 to 28907. [2022-11-25 18:12:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28907 states, 24058 states have (on average 1.597140244409344) internal successors, (38424), 24065 states have internal predecessors, (38424), 4821 states have call successors, (4821), 23 states have call predecessors, (4821), 27 states have return successors, (5434), 4820 states have call predecessors, (5434), 4820 states have call successors, (5434) [2022-11-25 18:12:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28907 states to 28907 states and 48679 transitions. [2022-11-25 18:12:12,702 INFO L78 Accepts]: Start accepts. Automaton has 28907 states and 48679 transitions. Word has length 153 [2022-11-25 18:12:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:12,703 INFO L495 AbstractCegarLoop]: Abstraction has 28907 states and 48679 transitions. [2022-11-25 18:12:12,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:12:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28907 states and 48679 transitions. [2022-11-25 18:12:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-25 18:12:12,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:12,768 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:12,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 18:12:12,769 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:12,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:12,769 INFO L85 PathProgramCache]: Analyzing trace with hash -413558180, now seen corresponding path program 1 times [2022-11-25 18:12:12,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:12,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797729136] [2022-11-25 18:12:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:12,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:12:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:12:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:12:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:12:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:12:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:12:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 18:12:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 18:12:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 18:12:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 18:12:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 18:12:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 18:12:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 18:12:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 18:12:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-25 18:12:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-25 18:12:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-25 18:12:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:12:12,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:12,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797729136] [2022-11-25 18:12:12,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797729136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:12,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:12,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:12:12,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745851698] [2022-11-25 18:12:12,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:12,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:12:12,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:12,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:12:12,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:12:12,964 INFO L87 Difference]: Start difference. First operand 28907 states and 48679 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:12:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:19,230 INFO L93 Difference]: Finished difference Result 78886 states and 134989 transitions. [2022-11-25 18:12:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:12:19,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-11-25 18:12:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:19,523 INFO L225 Difference]: With dead ends: 78886 [2022-11-25 18:12:19,523 INFO L226 Difference]: Without dead ends: 52984 [2022-11-25 18:12:19,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:12:19,603 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1280 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:19,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 857 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 18:12:19,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52984 states. [2022-11-25 18:12:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52984 to 52786. [2022-11-25 18:12:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52786 states, 44222 states have (on average 1.5918095065804352) internal successors, (70393), 44229 states have internal predecessors, (70393), 8536 states have call successors, (8536), 23 states have call predecessors, (8536), 27 states have return successors, (9681), 8535 states have call predecessors, (9681), 8535 states have call successors, (9681) [2022-11-25 18:12:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52786 states to 52786 states and 88610 transitions. [2022-11-25 18:12:25,138 INFO L78 Accepts]: Start accepts. Automaton has 52786 states and 88610 transitions. Word has length 154 [2022-11-25 18:12:25,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:25,138 INFO L495 AbstractCegarLoop]: Abstraction has 52786 states and 88610 transitions. [2022-11-25 18:12:25,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:12:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand 52786 states and 88610 transitions. [2022-11-25 18:12:25,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-25 18:12:25,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:25,220 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:25,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 18:12:25,221 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:25,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash -59364804, now seen corresponding path program 1 times [2022-11-25 18:12:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:25,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882454218] [2022-11-25 18:12:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:12:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 18:12:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 18:12:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 18:12:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:12:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 18:12:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 18:12:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 18:12:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 18:12:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 18:12:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 18:12:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 18:12:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 18:12:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 18:12:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-25 18:12:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 18:12:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-25 18:12:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 18:12:25,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:25,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882454218] [2022-11-25 18:12:25,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882454218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:25,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:25,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:12:25,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129321293] [2022-11-25 18:12:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:25,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:12:25,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:12:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:12:25,364 INFO L87 Difference]: Start difference. First operand 52786 states and 88610 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 18:12:34,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:34,385 INFO L93 Difference]: Finished difference Result 98657 states and 169176 transitions. [2022-11-25 18:12:34,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:12:34,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-11-25 18:12:34,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:34,863 INFO L225 Difference]: With dead ends: 98657 [2022-11-25 18:12:34,863 INFO L226 Difference]: Without dead ends: 98443 [2022-11-25 18:12:34,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 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 18:12:34,911 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1278 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:34,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 832 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 18:12:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98443 states.