./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/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_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/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_52956d34-f785-4729-a2bf-31f8f0a499f7/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 ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 --- 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 17:17:05,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:17:05,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:17:05,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:17:05,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:17:05,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:17:05,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:17:05,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:17:05,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:17:05,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:17:05,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:17:05,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:17:05,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:17:05,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:17:05,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:17:05,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:17:05,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:17:05,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:17:05,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:17:05,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:17:05,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:17:05,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:17:05,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:17:05,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:17:05,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:17:05,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:17:05,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:17:05,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:17:05,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:17:05,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:17:05,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:17:05,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:17:05,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:17:05,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:17:05,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:17:05,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:17:05,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:17:05,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:17:05,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:17:05,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:17:05,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:17:05,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:17:05,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:17:05,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:17:05,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:17:05,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:17:05,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:17:05,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:17:05,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:17:05,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:17:05,888 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:17:05,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:17:05,889 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:17:05,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:17:05,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:17:05,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:17:05,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:17:05,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:17:05,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:17:05,890 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:17:05,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:17:05,891 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:17:05,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:17:05,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:17:05,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:17:05,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:17:05,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:17:05,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:17:05,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:17:05,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:17:05,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:17:05,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:17:05,893 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:17:05,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:17:05,894 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:17:05,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:17:05,894 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_52956d34-f785-4729-a2bf-31f8f0a499f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceaa95778492e3bc285d343b26b58125dae05b4d97d6b8fbdf100b65fa491c48 [2022-11-25 17:17:06,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:17:06,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:17:06,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:17:06,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:17:06,260 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:17:06,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-11-25 17:17:09,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:17:09,630 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:17:09,631 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c [2022-11-25 17:17:09,662 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/data/a14e6a456/55975ce9819a4b5b9c2be272a7b2eca5/FLAG9c98655ef [2022-11-25 17:17:09,676 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/data/a14e6a456/55975ce9819a4b5b9c2be272a7b2eca5 [2022-11-25 17:17:09,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:17:09,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:17:09,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:17:09,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:17:09,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:17:09,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:17:09" (1/1) ... [2022-11-25 17:17:09,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6910ba2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:09, skipping insertion in model container [2022-11-25 17:17:09,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:17:09" (1/1) ... [2022-11-25 17:17:09,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:17:09,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:17:10,012 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,019 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,105 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,108 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,116 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,120 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,121 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_52956d34-f785-4729-a2bf-31f8f0a499f7/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-11-25 17:17:10,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:17:10,292 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:17:10,331 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,333 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,381 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,382 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,391 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,392 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:17:10,393 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_52956d34-f785-4729-a2bf-31f8f0a499f7/sv-benchmarks/c/product-lines/email_spec11_product03.cil.c[19915,19928] [2022-11-25 17:17:10,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:17:10,541 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:17:10,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10 WrapperNode [2022-11-25 17:17:10,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:17:10,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:17:10,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:17:10,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:17:10,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,637 INFO L138 Inliner]: procedures = 107, calls = 125, calls flagged for inlining = 35, calls inlined = 27, statements flattened = 523 [2022-11-25 17:17:10,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:17:10,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:17:10,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:17:10,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:17:10,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,677 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:17:10,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:17:10,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:17:10,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:17:10,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (1/1) ... [2022-11-25 17:17:10,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:17:10,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:10,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:17:10,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:17:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 17:17:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 17:17:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 17:17:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 17:17:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 17:17:10,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 17:17:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 17:17:10,790 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 17:17:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 17:17:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 17:17:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 17:17:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:17:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 17:17:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 17:17:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 17:17:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 17:17:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 17:17:10,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 17:17:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:17:10,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:17:10,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:17:11,014 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:17:11,016 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:17:11,570 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:17:11,583 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:17:11,587 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:17:11,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:17:11 BoogieIcfgContainer [2022-11-25 17:17:11,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:17:11,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:17:11,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:17:11,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:17:11,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:17:09" (1/3) ... [2022-11-25 17:17:11,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2a8942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:17:11, skipping insertion in model container [2022-11-25 17:17:11,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:10" (2/3) ... [2022-11-25 17:17:11,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2a8942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:17:11, skipping insertion in model container [2022-11-25 17:17:11,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:17:11" (3/3) ... [2022-11-25 17:17:11,606 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product03.cil.c [2022-11-25 17:17:11,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:17:11,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:17:11,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:17:11,701 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;@294dcfbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:17:11,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:17:11,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 106 states have internal predecessors, (154), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 17:17:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 17:17:11,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:11,720 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:11,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:11,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1671433298, now seen corresponding path program 1 times [2022-11-25 17:17:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:11,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720031110] [2022-11-25 17:17:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:17:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 17:17:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:17:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:17:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:17:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 17:17:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:17:12,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:12,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720031110] [2022-11-25 17:17:12,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720031110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:12,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719225139] [2022-11-25 17:17:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:12,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:12,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:12,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:12,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:17:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:12,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 17:17:12,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 17:17:12,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:17:12,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719225139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:12,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:17:12,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-11-25 17:17:12,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286016398] [2022-11-25 17:17:12,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:12,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:17:12,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:12,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:17:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:17:12,792 INFO L87 Difference]: Start difference. First operand has 127 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 106 states have internal predecessors, (154), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:12,854 INFO L93 Difference]: Finished difference Result 204 states and 279 transitions. [2022-11-25 17:17:12,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:17:12,858 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-11-25 17:17:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:12,866 INFO L225 Difference]: With dead ends: 204 [2022-11-25 17:17:12,867 INFO L226 Difference]: Without dead ends: 120 [2022-11-25 17:17:12,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:17:12,873 INFO L413 NwaCegarLoop]: 176 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, 176 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 17:17:12,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:17:12,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-25 17:17:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-11-25 17:17:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 99 states have internal predecessors, (143), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-25 17:17:12,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 168 transitions. [2022-11-25 17:17:12,916 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 168 transitions. Word has length 69 [2022-11-25 17:17:12,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:12,918 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 168 transitions. [2022-11-25 17:17:12,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 168 transitions. [2022-11-25 17:17:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 17:17:12,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:12,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:12,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:13,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:13,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:13,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1025509166, now seen corresponding path program 1 times [2022-11-25 17:17:13,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:13,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710833589] [2022-11-25 17:17:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:13,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:17:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:17:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:17:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:17:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 17:17:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:17:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:17:13,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:13,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710833589] [2022-11-25 17:17:13,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710833589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:13,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018377728] [2022-11-25 17:17:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:13,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:13,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:13,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:13,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:17:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:13,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:17:13,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 17:17:13,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:17:13,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018377728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:13,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:17:13,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-25 17:17:13,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036943982] [2022-11-25 17:17:13,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:13,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:17:13,700 INFO L87 Difference]: Start difference. First operand 120 states and 168 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:13,745 INFO L93 Difference]: Finished difference Result 194 states and 260 transitions. [2022-11-25 17:17:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:13,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-11-25 17:17:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:13,747 INFO L225 Difference]: With dead ends: 194 [2022-11-25 17:17:13,748 INFO L226 Difference]: Without dead ends: 123 [2022-11-25 17:17:13,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 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 17:17:13,750 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 330 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 17:17:13,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 330 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:17:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-25 17:17:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2022-11-25 17:17:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.45) internal successors, (145), 101 states have internal predecessors, (145), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-25 17:17:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 170 transitions. [2022-11-25 17:17:13,780 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 170 transitions. Word has length 70 [2022-11-25 17:17:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:13,780 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 170 transitions. [2022-11-25 17:17:13,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2022-11-25 17:17:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 17:17:13,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:13,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-25 17:17:13,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:13,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:13,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:13,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:13,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1527449369, now seen corresponding path program 1 times [2022-11-25 17:17:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:13,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245596421] [2022-11-25 17:17:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:13,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:17:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:17:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 17:17:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:17:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 17:17:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 17:17:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 17:17:14,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:14,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245596421] [2022-11-25 17:17:14,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245596421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:14,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645935994] [2022-11-25 17:17:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:14,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:14,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:14,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:14,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:17:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:14,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:17:14,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:17:14,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:17:14,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645935994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:14,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:17:14,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-25 17:17:14,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884455975] [2022-11-25 17:17:14,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:14,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:17:14,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:14,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:17:14,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:17:14,624 INFO L87 Difference]: Start difference. First operand 122 states and 170 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:17:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:14,684 INFO L93 Difference]: Finished difference Result 237 states and 333 transitions. [2022-11-25 17:17:14,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:17:14,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-11-25 17:17:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:14,694 INFO L225 Difference]: With dead ends: 237 [2022-11-25 17:17:14,694 INFO L226 Difference]: Without dead ends: 124 [2022-11-25 17:17:14,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:17:14,701 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 73 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 559 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 17:17:14,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 559 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:17:14,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-25 17:17:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-11-25 17:17:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 103 states have internal predecessors, (146), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-25 17:17:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 173 transitions. [2022-11-25 17:17:14,726 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 173 transitions. Word has length 75 [2022-11-25 17:17:14,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:14,728 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 173 transitions. [2022-11-25 17:17:14,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:17:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 173 transitions. [2022-11-25 17:17:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 17:17:14,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:14,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:14,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:14,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:14,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1719790030, now seen corresponding path program 1 times [2022-11-25 17:17:14,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:14,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282703183] [2022-11-25 17:17:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:14,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:17:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 17:17:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 17:17:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 17:17:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 17:17:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 17:17:15,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:15,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282703183] [2022-11-25 17:17:15,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282703183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:15,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:15,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:17:15,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603745795] [2022-11-25 17:17:15,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:15,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:17:15,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:17:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:17:15,159 INFO L87 Difference]: Start difference. First operand 124 states and 173 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:17:15,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:15,867 INFO L93 Difference]: Finished difference Result 291 states and 410 transitions. [2022-11-25 17:17:15,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:17:15,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-11-25 17:17:15,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:15,875 INFO L225 Difference]: With dead ends: 291 [2022-11-25 17:17:15,875 INFO L226 Difference]: Without dead ends: 186 [2022-11-25 17:17:15,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:17:15,881 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 289 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:15,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 451 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:17:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-25 17:17:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 124. [2022-11-25 17:17:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 103 states have internal predecessors, (146), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-25 17:17:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2022-11-25 17:17:15,920 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 76 [2022-11-25 17:17:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:15,921 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2022-11-25 17:17:15,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:17:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2022-11-25 17:17:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 17:17:15,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:15,927 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:17:15,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash -88603257, now seen corresponding path program 2 times [2022-11-25 17:17:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:15,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477207510] [2022-11-25 17:17:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 17:17:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 17:17:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:17:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 17:17:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 17:17:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 17:17:16,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:16,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477207510] [2022-11-25 17:17:16,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477207510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:16,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:16,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:17:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497367117] [2022-11-25 17:17:16,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:16,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:17:16,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:16,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:17:16,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:17:16,117 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:17:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:16,850 INFO L93 Difference]: Finished difference Result 293 states and 413 transitions. [2022-11-25 17:17:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:17:16,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-11-25 17:17:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:16,852 INFO L225 Difference]: With dead ends: 293 [2022-11-25 17:17:16,852 INFO L226 Difference]: Without dead ends: 188 [2022-11-25 17:17:16,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:17:16,854 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 283 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:16,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 453 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:17:16,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-25 17:17:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 126. [2022-11-25 17:17:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 105 states have internal predecessors, (147), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 175 transitions. [2022-11-25 17:17:16,890 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 175 transitions. Word has length 77 [2022-11-25 17:17:16,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:16,892 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 175 transitions. [2022-11-25 17:17:16,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:17:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 175 transitions. [2022-11-25 17:17:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 17:17:16,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:16,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:16,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:17:16,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:16,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1889424617, now seen corresponding path program 1 times [2022-11-25 17:17:16,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:16,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045372846] [2022-11-25 17:17:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:16,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 17:17:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:17:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:17:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:17:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:17:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:17,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:17,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045372846] [2022-11-25 17:17:17,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045372846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:17,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355490763] [2022-11-25 17:17:17,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:17,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:17,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:17,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:17,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:17:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:17,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:17:17,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:17,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:17:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:17,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355490763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:17:17,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:17:17,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-11-25 17:17:17,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631289224] [2022-11-25 17:17:17,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:17:17,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:17:17,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:17,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:17:17,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:17,413 INFO L87 Difference]: Start difference. First operand 126 states and 175 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 17:17:18,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:18,105 INFO L93 Difference]: Finished difference Result 373 states and 556 transitions. [2022-11-25 17:17:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:17:18,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 78 [2022-11-25 17:17:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:18,110 INFO L225 Difference]: With dead ends: 373 [2022-11-25 17:17:18,110 INFO L226 Difference]: Without dead ends: 302 [2022-11-25 17:17:18,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:17:18,114 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 554 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:18,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 620 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:17:18,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-25 17:17:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 216. [2022-11-25 17:17:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 192 states have (on average 1.625) internal successors, (312), 195 states have internal predecessors, (312), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 340 transitions. [2022-11-25 17:17:18,156 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 340 transitions. Word has length 78 [2022-11-25 17:17:18,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:18,157 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 340 transitions. [2022-11-25 17:17:18,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-25 17:17:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 340 transitions. [2022-11-25 17:17:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-25 17:17:18,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:18,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 17:17:18,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:18,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:17:18,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:18,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:18,366 INFO L85 PathProgramCache]: Analyzing trace with hash -396408711, now seen corresponding path program 1 times [2022-11-25 17:17:18,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:18,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522371950] [2022-11-25 17:17:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:18,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:17:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 17:17:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:17:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:18,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 17:17:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:18,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 17:17:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:18,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:18,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522371950] [2022-11-25 17:17:18,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522371950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:18,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:18,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:18,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004142733] [2022-11-25 17:17:18,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:18,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:18,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:18,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:18,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:18,491 INFO L87 Difference]: Start difference. First operand 216 states and 340 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:19,093 INFO L93 Difference]: Finished difference Result 563 states and 907 transitions. [2022-11-25 17:17:19,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:19,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-11-25 17:17:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:19,097 INFO L225 Difference]: With dead ends: 563 [2022-11-25 17:17:19,097 INFO L226 Difference]: Without dead ends: 375 [2022-11-25 17:17:19,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:19,099 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 270 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:19,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 376 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:17:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-25 17:17:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 305. [2022-11-25 17:17:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 281 states have (on average 1.6725978647686832) internal successors, (470), 284 states have internal predecessors, (470), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 498 transitions. [2022-11-25 17:17:19,129 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 498 transitions. Word has length 85 [2022-11-25 17:17:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:19,129 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 498 transitions. [2022-11-25 17:17:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 498 transitions. [2022-11-25 17:17:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-25 17:17:19,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:19,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 17:17:19,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:17:19,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1723354495, now seen corresponding path program 1 times [2022-11-25 17:17:19,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:19,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844426560] [2022-11-25 17:17:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:19,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 17:17:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:17:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 17:17:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 17:17:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 17:17:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:19,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:19,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844426560] [2022-11-25 17:17:19,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844426560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:19,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:19,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053806293] [2022-11-25 17:17:19,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:19,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:19,227 INFO L87 Difference]: Start difference. First operand 305 states and 498 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:19,745 INFO L93 Difference]: Finished difference Result 756 states and 1257 transitions. [2022-11-25 17:17:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:19,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2022-11-25 17:17:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:19,749 INFO L225 Difference]: With dead ends: 756 [2022-11-25 17:17:19,749 INFO L226 Difference]: Without dead ends: 497 [2022-11-25 17:17:19,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:19,751 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 268 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:19,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 364 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:17:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-25 17:17:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 427. [2022-11-25 17:17:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 403 states have (on average 1.7047146401985112) internal successors, (687), 406 states have internal predecessors, (687), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 715 transitions. [2022-11-25 17:17:19,788 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 715 transitions. Word has length 86 [2022-11-25 17:17:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:19,788 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 715 transitions. [2022-11-25 17:17:19,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:19,789 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 715 transitions. [2022-11-25 17:17:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-25 17:17:19,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:19,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 17:17:19,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:17:19,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:19,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash 221443351, now seen corresponding path program 1 times [2022-11-25 17:17:19,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:19,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558525321] [2022-11-25 17:17:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:19,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 17:17:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 17:17:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:17:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 17:17:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 17:17:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:19,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:19,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558525321] [2022-11-25 17:17:19,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558525321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:19,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:19,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:19,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746523660] [2022-11-25 17:17:19,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:19,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:19,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:19,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:19,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:19,919 INFO L87 Difference]: Start difference. First operand 427 states and 715 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:20,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:20,456 INFO L93 Difference]: Finished difference Result 1078 states and 1828 transitions. [2022-11-25 17:17:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:20,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-25 17:17:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:20,461 INFO L225 Difference]: With dead ends: 1078 [2022-11-25 17:17:20,462 INFO L226 Difference]: Without dead ends: 716 [2022-11-25 17:17:20,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:20,466 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 267 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:20,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 370 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:17:20,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-25 17:17:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 646. [2022-11-25 17:17:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 622 states have (on average 1.712218649517685) internal successors, (1065), 625 states have internal predecessors, (1065), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1093 transitions. [2022-11-25 17:17:20,517 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1093 transitions. Word has length 87 [2022-11-25 17:17:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:20,518 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 1093 transitions. [2022-11-25 17:17:20,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1093 transitions. [2022-11-25 17:17:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 17:17:20,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:20,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 17:17:20,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:17:20,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:20,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1679828301, now seen corresponding path program 1 times [2022-11-25 17:17:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:20,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126838808] [2022-11-25 17:17:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:20,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 17:17:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:20,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:17:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:20,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 17:17:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 17:17:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 17:17:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:20,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:20,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126838808] [2022-11-25 17:17:20,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126838808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:20,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:20,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:20,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054389391] [2022-11-25 17:17:20,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:20,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:20,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:20,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:20,630 INFO L87 Difference]: Start difference. First operand 646 states and 1093 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:21,182 INFO L93 Difference]: Finished difference Result 1600 states and 2738 transitions. [2022-11-25 17:17:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2022-11-25 17:17:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:21,188 INFO L225 Difference]: With dead ends: 1600 [2022-11-25 17:17:21,188 INFO L226 Difference]: Without dead ends: 1067 [2022-11-25 17:17:21,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:21,190 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 265 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:21,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 370 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:17:21,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-11-25 17:17:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 997. [2022-11-25 17:17:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 973 states have (on average 1.7081192189105858) internal successors, (1662), 976 states have internal predecessors, (1662), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1690 transitions. [2022-11-25 17:17:21,262 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1690 transitions. Word has length 88 [2022-11-25 17:17:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:21,263 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1690 transitions. [2022-11-25 17:17:21,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1690 transitions. [2022-11-25 17:17:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 17:17:21,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:21,266 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:21,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:17:21,266 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:21,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash -889624779, now seen corresponding path program 1 times [2022-11-25 17:17:21,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:21,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855104965] [2022-11-25 17:17:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:21,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 17:17:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:17:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:17:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:17:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 17:17:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:21,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:21,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855104965] [2022-11-25 17:17:21,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855104965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:21,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:21,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:21,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689461763] [2022-11-25 17:17:21,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:21,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:21,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:21,376 INFO L87 Difference]: Start difference. First operand 997 states and 1690 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:21,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:21,987 INFO L93 Difference]: Finished difference Result 2450 states and 4203 transitions. [2022-11-25 17:17:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:21,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2022-11-25 17:17:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:21,995 INFO L225 Difference]: With dead ends: 2450 [2022-11-25 17:17:21,996 INFO L226 Difference]: Without dead ends: 1646 [2022-11-25 17:17:21,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:21,998 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 263 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:21,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 370 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:17:22,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-25 17:17:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1576. [2022-11-25 17:17:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1552 states have (on average 1.6990979381443299) internal successors, (2637), 1555 states have internal predecessors, (2637), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2665 transitions. [2022-11-25 17:17:22,124 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2665 transitions. Word has length 89 [2022-11-25 17:17:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:22,126 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2665 transitions. [2022-11-25 17:17:22,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:22,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2665 transitions. [2022-11-25 17:17:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 17:17:22,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:22,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:22,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:17:22,131 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:22,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1310846161, now seen corresponding path program 1 times [2022-11-25 17:17:22,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:22,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498361344] [2022-11-25 17:17:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:22,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:22,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 17:17:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 17:17:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:22,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 17:17:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:22,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 17:17:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 17:17:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:22,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:22,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498361344] [2022-11-25 17:17:22,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498361344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:22,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:22,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:22,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800122966] [2022-11-25 17:17:22,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:22,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:22,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:22,266 INFO L87 Difference]: Start difference. First operand 1576 states and 2665 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:22,933 INFO L93 Difference]: Finished difference Result 3902 states and 6682 transitions. [2022-11-25 17:17:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:22,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2022-11-25 17:17:22,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:22,945 INFO L225 Difference]: With dead ends: 3902 [2022-11-25 17:17:22,945 INFO L226 Difference]: Without dead ends: 2639 [2022-11-25 17:17:22,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:22,952 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 261 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:22,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 370 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:17:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-11-25 17:17:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2569. [2022-11-25 17:17:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 2545 states have (on average 1.6884086444007858) internal successors, (4297), 2548 states have internal predecessors, (4297), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 4325 transitions. [2022-11-25 17:17:23,176 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 4325 transitions. Word has length 90 [2022-11-25 17:17:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:23,177 INFO L495 AbstractCegarLoop]: Abstraction has 2569 states and 4325 transitions. [2022-11-25 17:17:23,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 4325 transitions. [2022-11-25 17:17:23,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 17:17:23,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:23,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 17:17:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:17:23,183 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:23,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1626247507, now seen corresponding path program 1 times [2022-11-25 17:17:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:23,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461759401] [2022-11-25 17:17:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:23,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:23,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:17:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 17:17:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 17:17:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 17:17:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:23,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 17:17:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:23,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:23,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461759401] [2022-11-25 17:17:23,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461759401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:23,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:23,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:23,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913301091] [2022-11-25 17:17:23,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:23,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:23,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:23,289 INFO L87 Difference]: Start difference. First operand 2569 states and 4325 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:24,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:24,061 INFO L93 Difference]: Finished difference Result 6496 states and 11070 transitions. [2022-11-25 17:17:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:24,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-11-25 17:17:24,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:24,079 INFO L225 Difference]: With dead ends: 6496 [2022-11-25 17:17:24,079 INFO L226 Difference]: Without dead ends: 4408 [2022-11-25 17:17:24,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:24,085 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 260 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:24,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 368 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:17:24,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2022-11-25 17:17:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4338. [2022-11-25 17:17:24,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4314 states have (on average 1.67663421418637) internal successors, (7233), 4317 states have internal predecessors, (7233), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 7261 transitions. [2022-11-25 17:17:24,452 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 7261 transitions. Word has length 91 [2022-11-25 17:17:24,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:24,453 INFO L495 AbstractCegarLoop]: Abstraction has 4338 states and 7261 transitions. [2022-11-25 17:17:24,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:24,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 7261 transitions. [2022-11-25 17:17:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 17:17:24,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:24,462 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:24,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:17:24,463 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:24,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:24,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1889425681, now seen corresponding path program 1 times [2022-11-25 17:17:24,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:24,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631320237] [2022-11-25 17:17:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:24,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 17:17:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 17:17:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 17:17:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 17:17:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 17:17:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:24,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:24,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631320237] [2022-11-25 17:17:24,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631320237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:24,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:24,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:24,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478527904] [2022-11-25 17:17:24,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:24,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:24,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:24,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:24,602 INFO L87 Difference]: Start difference. First operand 4338 states and 7261 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:25,618 INFO L93 Difference]: Finished difference Result 11292 states and 19098 transitions. [2022-11-25 17:17:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:25,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2022-11-25 17:17:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:25,650 INFO L225 Difference]: With dead ends: 11292 [2022-11-25 17:17:25,650 INFO L226 Difference]: Without dead ends: 7659 [2022-11-25 17:17:25,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:25,656 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 257 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:25,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 370 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:17:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7659 states. [2022-11-25 17:17:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7659 to 7589. [2022-11-25 17:17:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7589 states, 7565 states have (on average 1.6629213483146068) internal successors, (12580), 7568 states have internal predecessors, (12580), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 12608 transitions. [2022-11-25 17:17:26,254 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 12608 transitions. Word has length 92 [2022-11-25 17:17:26,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:26,254 INFO L495 AbstractCegarLoop]: Abstraction has 7589 states and 12608 transitions. [2022-11-25 17:17:26,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:26,255 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 12608 transitions. [2022-11-25 17:17:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-25 17:17:26,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:26,269 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 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] [2022-11-25 17:17:26,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:17:26,270 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:26,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash 54984254, now seen corresponding path program 2 times [2022-11-25 17:17:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:26,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496331887] [2022-11-25 17:17:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:26,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:26,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:17:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 17:17:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 17:17:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:26,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 17:17:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 17:17:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 17:17:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:26,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496331887] [2022-11-25 17:17:26,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496331887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:26,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:26,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371085033] [2022-11-25 17:17:26,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:26,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:26,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:26,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:26,378 INFO L87 Difference]: Start difference. First operand 7589 states and 12608 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:27,367 INFO L93 Difference]: Finished difference Result 14103 states and 23561 transitions. [2022-11-25 17:17:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:27,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-11-25 17:17:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:27,399 INFO L225 Difference]: With dead ends: 14103 [2022-11-25 17:17:27,399 INFO L226 Difference]: Without dead ends: 7659 [2022-11-25 17:17:27,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:27,408 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 270 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:27,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 602 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:17:27,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7659 states. [2022-11-25 17:17:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7659 to 7589. [2022-11-25 17:17:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7589 states, 7565 states have (on average 1.6448116325181759) internal successors, (12443), 7568 states have internal predecessors, (12443), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 12471 transitions. [2022-11-25 17:17:28,195 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 12471 transitions. Word has length 93 [2022-11-25 17:17:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:28,196 INFO L495 AbstractCegarLoop]: Abstraction has 7589 states and 12471 transitions. [2022-11-25 17:17:28,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 12471 transitions. [2022-11-25 17:17:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-25 17:17:28,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:28,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:28,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:17:28,213 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:28,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2024778895, now seen corresponding path program 1 times [2022-11-25 17:17:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:28,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338607169] [2022-11-25 17:17:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:28,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:28,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:17:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:28,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 17:17:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 17:17:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:28,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 17:17:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 17:17:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:28,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:28,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338607169] [2022-11-25 17:17:28,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338607169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:28,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:28,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:28,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080440508] [2022-11-25 17:17:28,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:28,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:28,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:28,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:28,326 INFO L87 Difference]: Start difference. First operand 7589 states and 12471 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:29,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:29,821 INFO L93 Difference]: Finished difference Result 20366 states and 33702 transitions. [2022-11-25 17:17:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:29,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-11-25 17:17:29,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:29,867 INFO L225 Difference]: With dead ends: 20366 [2022-11-25 17:17:29,867 INFO L226 Difference]: Without dead ends: 13770 [2022-11-25 17:17:29,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:29,876 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 256 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:29,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 369 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:17:29,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13770 states. [2022-11-25 17:17:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13770 to 13700. [2022-11-25 17:17:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13700 states, 13676 states have (on average 1.626718338695525) internal successors, (22247), 13679 states have internal predecessors, (22247), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:30,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13700 states to 13700 states and 22275 transitions. [2022-11-25 17:17:30,869 INFO L78 Accepts]: Start accepts. Automaton has 13700 states and 22275 transitions. Word has length 93 [2022-11-25 17:17:30,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:30,870 INFO L495 AbstractCegarLoop]: Abstraction has 13700 states and 22275 transitions. [2022-11-25 17:17:30,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:30,870 INFO L276 IsEmpty]: Start isEmpty. Operand 13700 states and 22275 transitions. [2022-11-25 17:17:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-25 17:17:30,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:30,888 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:30,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:17:30,888 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:30,889 INFO L85 PathProgramCache]: Analyzing trace with hash 522393331, now seen corresponding path program 1 times [2022-11-25 17:17:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:30,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824113689] [2022-11-25 17:17:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:30,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:17:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 17:17:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 17:17:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 17:17:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 17:17:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:30,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824113689] [2022-11-25 17:17:30,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824113689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:30,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:30,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228304017] [2022-11-25 17:17:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:30,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:30,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:30,995 INFO L87 Difference]: Start difference. First operand 13700 states and 22275 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:33,395 INFO L93 Difference]: Finished difference Result 37778 states and 61674 transitions. [2022-11-25 17:17:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:33,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2022-11-25 17:17:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:33,475 INFO L225 Difference]: With dead ends: 37778 [2022-11-25 17:17:33,476 INFO L226 Difference]: Without dead ends: 25431 [2022-11-25 17:17:33,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:33,496 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 252 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:33,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 371 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:17:33,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25431 states. [2022-11-25 17:17:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25431 to 25361. [2022-11-25 17:17:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25361 states, 25337 states have (on average 1.605083474760232) internal successors, (40668), 25340 states have internal predecessors, (40668), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25361 states to 25361 states and 40696 transitions. [2022-11-25 17:17:35,513 INFO L78 Accepts]: Start accepts. Automaton has 25361 states and 40696 transitions. Word has length 94 [2022-11-25 17:17:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:35,513 INFO L495 AbstractCegarLoop]: Abstraction has 25361 states and 40696 transitions. [2022-11-25 17:17:35,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 25361 states and 40696 transitions. [2022-11-25 17:17:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-25 17:17:35,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:35,536 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:35,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:17:35,536 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:35,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1876725135, now seen corresponding path program 1 times [2022-11-25 17:17:35,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:35,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210856491] [2022-11-25 17:17:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:35,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:35,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:35,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 17:17:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:17:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:35,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 17:17:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:35,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 17:17:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:35,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 17:17:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:35,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:35,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210856491] [2022-11-25 17:17:35,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210856491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:35,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:35,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:17:35,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730634718] [2022-11-25 17:17:35,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:35,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:35,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:35,633 INFO L87 Difference]: Start difference. First operand 25361 states and 40696 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:38,585 INFO L93 Difference]: Finished difference Result 47931 states and 76785 transitions. [2022-11-25 17:17:38,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:17:38,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2022-11-25 17:17:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:38,718 INFO L225 Difference]: With dead ends: 47931 [2022-11-25 17:17:38,718 INFO L226 Difference]: Without dead ends: 47860 [2022-11-25 17:17:38,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:17:38,734 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 251 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:38,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 370 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:17:38,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47860 states. [2022-11-25 17:17:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47860 to 47790. [2022-11-25 17:17:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47790 states, 47766 states have (on average 1.580119750450111) internal successors, (75476), 47769 states have internal predecessors, (75476), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2022-11-25 17:17:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47790 states to 47790 states and 75504 transitions. [2022-11-25 17:17:41,910 INFO L78 Accepts]: Start accepts. Automaton has 47790 states and 75504 transitions. Word has length 95 [2022-11-25 17:17:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:41,910 INFO L495 AbstractCegarLoop]: Abstraction has 47790 states and 75504 transitions. [2022-11-25 17:17:41,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 47790 states and 75504 transitions. [2022-11-25 17:17:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-25 17:17:41,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:41,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:41,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:17:41,935 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash -206672683, now seen corresponding path program 1 times [2022-11-25 17:17:41,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:41,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308754405] [2022-11-25 17:17:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:41,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 17:17:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:17:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 17:17:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 17:17:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 17:17:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:17:42,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308754405] [2022-11-25 17:17:42,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308754405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:17:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433266992] [2022-11-25 17:17:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:42,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:42,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:42,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:17:42,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:17:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:42,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 17:17:42,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:17:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 17:17:43,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:17:43,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433266992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:43,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:17:43,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-11-25 17:17:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416674935] [2022-11-25 17:17:43,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:17:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:17:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2022-11-25 17:17:43,185 INFO L87 Difference]: Start difference. First operand 47790 states and 75504 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 17:17:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:46,380 INFO L93 Difference]: Finished difference Result 48000 states and 75766 transitions. [2022-11-25 17:17:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:17:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 96 [2022-11-25 17:17:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:46,499 INFO L225 Difference]: With dead ends: 48000 [2022-11-25 17:17:46,499 INFO L226 Difference]: Without dead ends: 47935 [2022-11-25 17:17:46,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2022-11-25 17:17:46,511 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 378 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:46,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1618 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:17:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47935 states. [2022-11-25 17:17:49,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47935 to 47884. [2022-11-25 17:17:49,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47884 states, 47840 states have (on average 1.5796822742474916) internal successors, (75572), 47844 states have internal predecessors, (75572), 23 states have call successors, (23), 15 states have call predecessors, (23), 20 states have return successors, (30), 24 states have call predecessors, (30), 21 states have call successors, (30) [2022-11-25 17:17:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47884 states to 47884 states and 75625 transitions. [2022-11-25 17:17:50,009 INFO L78 Accepts]: Start accepts. Automaton has 47884 states and 75625 transitions. Word has length 96 [2022-11-25 17:17:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:17:50,009 INFO L495 AbstractCegarLoop]: Abstraction has 47884 states and 75625 transitions. [2022-11-25 17:17:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 17:17:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 47884 states and 75625 transitions. [2022-11-25 17:17:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 17:17:50,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:17:50,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 17:17:50,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:17:50,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52956d34-f785-4729-a2bf-31f8f0a499f7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:17:50,237 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:17:50,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:50,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1817903000, now seen corresponding path program 1 times [2022-11-25 17:17:50,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:50,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412479890] [2022-11-25 17:17:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:50,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:17:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:17:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:17:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 17:17:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:17:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 17:17:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 17:17:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:17:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:17:50,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:50,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412479890] [2022-11-25 17:17:50,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412479890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:50,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:50,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:17:50,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357671034] [2022-11-25 17:17:50,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:50,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:17:50,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:17:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:17:50,646 INFO L87 Difference]: Start difference. First operand 47884 states and 75625 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:17:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:17:57,617 INFO L93 Difference]: Finished difference Result 94505 states and 149401 transitions. [2022-11-25 17:17:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 17:17:57,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2022-11-25 17:17:57,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:17:58,023 INFO L225 Difference]: With dead ends: 94505 [2022-11-25 17:17:58,024 INFO L226 Difference]: Without dead ends: 94355 [2022-11-25 17:17:58,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:17:58,040 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 547 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:17:58,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 521 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 17:17:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94355 states.