./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8 --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 c6648e04749112dcff3ed26da66b003a84ec072cad34992d8bd41fd0d54f135f --- 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-2329fc7 [2022-12-13 11:50:15,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:50:15,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:50:15,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:50:15,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:50:15,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:50:15,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:50:15,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:50:15,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:50:15,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:50:15,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:50:15,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:50:15,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:50:15,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:50:15,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:50:15,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:50:15,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:50:15,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:50:15,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:50:15,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:50:15,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:50:15,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:50:15,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:50:15,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:50:15,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:50:15,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:50:15,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:50:15,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:50:15,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:50:15,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:50:15,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:50:15,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:50:15,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:50:15,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:50:15,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:50:15,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:50:15,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:50:15,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:50:15,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:50:15,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:50:15,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:50:15,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:50:15,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:50:15,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:50:15,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:50:15,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:50:15,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:50:15,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:50:15,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:50:15,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:50:15,235 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:50:15,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:50:15,235 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:50:15,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:50:15,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:50:15,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:50:15,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:50:15,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:50:15,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:50:15,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:50:15,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:50:15,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:50:15,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:50:15,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:50:15,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:50:15,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:50:15,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:50:15,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:50:15,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:50:15,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:50:15,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:50:15,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:50:15,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:50:15,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:50:15,240 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:50:15,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:50:15,240 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:50:15,240 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_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6648e04749112dcff3ed26da66b003a84ec072cad34992d8bd41fd0d54f135f [2022-12-13 11:50:15,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:50:15,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:50:15,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:50:15,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:50:15,442 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:50:15,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/email_spec6_product30.cil.c [2022-12-13 11:50:17,983 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:50:18,193 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:50:18,193 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c [2022-12-13 11:50:18,205 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/data/d33cc315e/d5fee096d963439dba1063713057859c/FLAG9282e942e [2022-12-13 11:50:18,549 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/data/d33cc315e/d5fee096d963439dba1063713057859c [2022-12-13 11:50:18,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:50:18,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:50:18,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:50:18,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:50:18,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:50:18,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:50:18" (1/1) ... [2022-12-13 11:50:18,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f9efb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:18, skipping insertion in model container [2022-12-13 11:50:18,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:50:18" (1/1) ... [2022-12-13 11:50:18,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:50:18,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:50:18,826 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,829 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,842 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,846 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,854 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,899 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,900 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,902 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,905 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_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c[64728,64741] [2022-12-13 11:50:18,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:50:18,917 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:50:18,960 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,961 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,964 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,965 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,969 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,987 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,988 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,990 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:50:18,993 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_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/sv-benchmarks/c/product-lines/email_spec6_product30.cil.c[64728,64741] [2022-12-13 11:50:18,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:50:19,012 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:50:19,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19 WrapperNode [2022-12-13 11:50:19,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:50:19,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:50:19,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:50:19,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:50:19,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,101 INFO L138 Inliner]: procedures = 132, calls = 225, calls flagged for inlining = 61, calls inlined = 51, statements flattened = 936 [2022-12-13 11:50:19,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:50:19,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:50:19,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:50:19,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:50:19,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,145 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:50:19,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:50:19,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:50:19,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:50:19,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (1/1) ... [2022-12-13 11:50:19,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:50:19,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:50:19,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:50:19,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:50:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-13 11:50:19,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-13 11:50:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-13 11:50:19,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-13 11:50:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-13 11:50:19,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-13 11:50:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-13 11:50:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-13 11:50:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-13 11:50:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-13 11:50:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-13 11:50:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-13 11:50:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-13 11:50:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-13 11:50:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-13 11:50:19,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-13 11:50:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-13 11:50:19,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-13 11:50:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-13 11:50:19,224 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-13 11:50:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-13 11:50:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-13 11:50:19,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-13 11:50:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-13 11:50:19,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-13 11:50:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:50:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-13 11:50:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-13 11:50:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-13 11:50:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-13 11:50:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-13 11:50:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-13 11:50:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-13 11:50:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-13 11:50:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-13 11:50:19,227 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-13 11:50:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-13 11:50:19,227 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-13 11:50:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-13 11:50:19,227 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-13 11:50:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-13 11:50:19,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-13 11:50:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-13 11:50:19,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-13 11:50:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-13 11:50:19,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-13 11:50:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:50:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-13 11:50:19,228 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-13 11:50:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:50:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:50:19,391 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:50:19,393 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:50:19,961 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:50:19,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:50:19,971 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:50:19,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:50:19 BoogieIcfgContainer [2022-12-13 11:50:19,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:50:19,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:50:19,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:50:19,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:50:19,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:50:18" (1/3) ... [2022-12-13 11:50:19,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4576ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:50:19, skipping insertion in model container [2022-12-13 11:50:19,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:50:19" (2/3) ... [2022-12-13 11:50:19,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4576ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:50:19, skipping insertion in model container [2022-12-13 11:50:19,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:50:19" (3/3) ... [2022-12-13 11:50:19,993 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product30.cil.c [2022-12-13 11:50:20,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:50:20,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:50:20,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:50:20,076 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;@74e36418, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:50:20,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:50:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 272 states have (on average 1.5110294117647058) internal successors, (411), 276 states have internal predecessors, (411), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-13 11:50:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-13 11:50:20,097 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:20,097 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:20,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:20,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:20,102 INFO L85 PathProgramCache]: Analyzing trace with hash -770456183, now seen corresponding path program 1 times [2022-12-13 11:50:20,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:20,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961613526] [2022-12-13 11:50:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:20,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 11:50:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:50:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 11:50:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:50:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:50:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:50:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:50:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:50:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 11:50:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:50:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 11:50:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:50:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:50:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 11:50:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 11:50:20,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:20,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961613526] [2022-12-13 11:50:20,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961613526] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:50:20,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962144637] [2022-12-13 11:50:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:20,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:20,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:50:20,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:50:20,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:50:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 11:50:20,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:50:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:50:20,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:50:20,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962144637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:20,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:50:20,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-12-13 11:50:20,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890936496] [2022-12-13 11:50:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:20,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:50:20,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:50:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:50:21,011 INFO L87 Difference]: Start difference. First operand has 352 states, 272 states have (on average 1.5110294117647058) internal successors, (411), 276 states have internal predecessors, (411), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:21,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:21,063 INFO L93 Difference]: Finished difference Result 550 states and 796 transitions. [2022-12-13 11:50:21,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:50:21,065 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2022-12-13 11:50:21,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:21,076 INFO L225 Difference]: With dead ends: 550 [2022-12-13 11:50:21,076 INFO L226 Difference]: Without dead ends: 345 [2022-12-13 11:50:21,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:50:21,082 INFO L413 NwaCegarLoop]: 517 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, 517 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 [2022-12-13 11:50:21,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:50:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-12-13 11:50:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-12-13 11:50:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 266 states have (on average 1.5037593984962405) internal successors, (400), 269 states have internal predecessors, (400), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-13 11:50:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 509 transitions. [2022-12-13 11:50:21,144 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 509 transitions. Word has length 126 [2022-12-13 11:50:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:21,145 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 509 transitions. [2022-12-13 11:50:21,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 509 transitions. [2022-12-13 11:50:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 11:50:21,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:21,151 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:21,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:50:21,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 11:50:21,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:21,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:21,355 INFO L85 PathProgramCache]: Analyzing trace with hash -682131900, now seen corresponding path program 1 times [2022-12-13 11:50:21,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:21,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244447067] [2022-12-13 11:50:21,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:21,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 11:50:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:50:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 11:50:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:50:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:50:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:50:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:50:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:50:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:50:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 11:50:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:50:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 11:50:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 11:50:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:50:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 11:50:21,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:21,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244447067] [2022-12-13 11:50:21,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244447067] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:50:21,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857402050] [2022-12-13 11:50:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:21,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:21,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:50:21,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:50:21,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:50:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:21,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:50:21,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:50:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:50:21,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:50:21,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857402050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:21,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:50:21,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 11:50:21,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716126835] [2022-12-13 11:50:21,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:21,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:50:21,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:21,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:50:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:50:21,984 INFO L87 Difference]: Start difference. First operand 345 states and 509 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:22,027 INFO L93 Difference]: Finished difference Result 540 states and 777 transitions. [2022-12-13 11:50:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:50:22,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2022-12-13 11:50:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:22,031 INFO L225 Difference]: With dead ends: 540 [2022-12-13 11:50:22,031 INFO L226 Difference]: Without dead ends: 348 [2022-12-13 11:50:22,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:50:22,034 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 1 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1012 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 [2022-12-13 11:50:22,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1012 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:50:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-12-13 11:50:22,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2022-12-13 11:50:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 268 states have (on average 1.5) internal successors, (402), 271 states have internal predecessors, (402), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-13 11:50:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 511 transitions. [2022-12-13 11:50:22,058 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 511 transitions. Word has length 127 [2022-12-13 11:50:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:22,059 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 511 transitions. [2022-12-13 11:50:22,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 511 transitions. [2022-12-13 11:50:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-12-13 11:50:22,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:22,062 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:22,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:50:22,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:22,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash -744377666, now seen corresponding path program 1 times [2022-12-13 11:50:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:22,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825296311] [2022-12-13 11:50:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:22,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 11:50:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:50:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 11:50:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 11:50:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:50:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:50:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:50:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:50:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:50:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 11:50:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 11:50:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 11:50:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 11:50:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 11:50:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 11:50:22,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:22,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825296311] [2022-12-13 11:50:22,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825296311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:50:22,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145655590] [2022-12-13 11:50:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:22,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:22,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:50:22,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:50:22,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:50:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:22,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:50:22,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:50:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:50:22,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:50:22,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145655590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:22,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:50:22,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 11:50:22,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59386909] [2022-12-13 11:50:22,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:22,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:50:22,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:22,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:50:22,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:50:22,806 INFO L87 Difference]: Start difference. First operand 347 states and 511 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:22,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:22,835 INFO L93 Difference]: Finished difference Result 724 states and 1081 transitions. [2022-12-13 11:50:22,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:50:22,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2022-12-13 11:50:22,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:22,838 INFO L225 Difference]: With dead ends: 724 [2022-12-13 11:50:22,838 INFO L226 Difference]: Without dead ends: 404 [2022-12-13 11:50:22,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:50:22,840 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 107 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:22,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 988 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:50:22,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-12-13 11:50:22,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 396. [2022-12-13 11:50:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 309 states have internal predecessors, (464), 66 states have call successors, (66), 23 states have call predecessors, (66), 23 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-12-13 11:50:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 595 transitions. [2022-12-13 11:50:22,861 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 595 transitions. Word has length 136 [2022-12-13 11:50:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:22,862 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 595 transitions. [2022-12-13 11:50:22,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 595 transitions. [2022-12-13 11:50:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 11:50:22,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:22,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:22,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:50:23,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:23,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:23,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1790455273, now seen corresponding path program 1 times [2022-12-13 11:50:23,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:23,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461595992] [2022-12-13 11:50:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:23,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 11:50:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:50:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 11:50:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 11:50:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:50:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 11:50:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:50:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 11:50:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 11:50:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:50:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 11:50:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 11:50:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 11:50:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 11:50:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 11:50:23,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:23,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461595992] [2022-12-13 11:50:23,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461595992] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:50:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493333339] [2022-12-13 11:50:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:23,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:23,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:50:23,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:50:23,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:50:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:23,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:50:23,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:50:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 11:50:23,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:50:23,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493333339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:23,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:50:23,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-13 11:50:23,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675065329] [2022-12-13 11:50:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:23,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:50:23,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:50:23,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:50:23,651 INFO L87 Difference]: Start difference. First operand 396 states and 595 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:23,717 INFO L93 Difference]: Finished difference Result 783 states and 1180 transitions. [2022-12-13 11:50:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:50:23,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 137 [2022-12-13 11:50:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:23,721 INFO L225 Difference]: With dead ends: 783 [2022-12-13 11:50:23,721 INFO L226 Difference]: Without dead ends: 398 [2022-12-13 11:50:23,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:50:23,722 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 125 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1855 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 [2022-12-13 11:50:23,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1855 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:50:23,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-12-13 11:50:23,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2022-12-13 11:50:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 307 states have (on average 1.514657980456026) internal successors, (465), 311 states have internal predecessors, (465), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) [2022-12-13 11:50:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 598 transitions. [2022-12-13 11:50:23,739 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 598 transitions. Word has length 137 [2022-12-13 11:50:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:23,739 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 598 transitions. [2022-12-13 11:50:23,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 598 transitions. [2022-12-13 11:50:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 11:50:23,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:23,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:23,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:50:23,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:23,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:23,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1336008698, now seen corresponding path program 1 times [2022-12-13 11:50:23,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:23,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363672488] [2022-12-13 11:50:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:23,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:50:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 11:50:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:50:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 11:50:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 11:50:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 11:50:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:50:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:50:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 11:50:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:50:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 11:50:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 11:50:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 11:50:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 11:50:24,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:24,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363672488] [2022-12-13 11:50:24,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363672488] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:50:24,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006607086] [2022-12-13 11:50:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:24,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:24,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:50:24,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:50:24,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:50:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:24,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:50:24,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:50:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 11:50:24,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:50:24,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006607086] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:24,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:50:24,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-12-13 11:50:24,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609982674] [2022-12-13 11:50:24,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:24,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:50:24,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:24,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:50:24,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:50:24,533 INFO L87 Difference]: Start difference. First operand 398 states and 598 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:24,599 INFO L93 Difference]: Finished difference Result 785 states and 1185 transitions. [2022-12-13 11:50:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:50:24,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2022-12-13 11:50:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:24,602 INFO L225 Difference]: With dead ends: 785 [2022-12-13 11:50:24,602 INFO L226 Difference]: Without dead ends: 400 [2022-12-13 11:50:24,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:50:24,605 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 124 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:24,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1844 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:50:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-12-13 11:50:24,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-12-13 11:50:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.5129870129870129) internal successors, (466), 313 states have internal predecessors, (466), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (72), 65 states have call predecessors, (72), 65 states have call successors, (72) [2022-12-13 11:50:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 604 transitions. [2022-12-13 11:50:24,633 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 604 transitions. Word has length 138 [2022-12-13 11:50:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:24,633 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 604 transitions. [2022-12-13 11:50:24,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 604 transitions. [2022-12-13 11:50:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-13 11:50:24,636 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:24,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:24,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:50:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:24,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1833577272, now seen corresponding path program 1 times [2022-12-13 11:50:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:24,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293498596] [2022-12-13 11:50:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 11:50:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:50:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 11:50:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 11:50:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 11:50:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 11:50:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 11:50:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 11:50:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:50:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:50:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:50:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:50:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 11:50:25,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293498596] [2022-12-13 11:50:25,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293498596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:25,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:25,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 11:50:25,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930405318] [2022-12-13 11:50:25,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:25,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:50:25,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:50:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:50:25,145 INFO L87 Difference]: Start difference. First operand 400 states and 604 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:26,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:26,722 INFO L93 Difference]: Finished difference Result 897 states and 1356 transitions. [2022-12-13 11:50:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:50:26,722 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 139 [2022-12-13 11:50:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:26,726 INFO L225 Difference]: With dead ends: 897 [2022-12-13 11:50:26,726 INFO L226 Difference]: Without dead ends: 520 [2022-12-13 11:50:26,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 11:50:26,728 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1239 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:26,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 987 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 11:50:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-12-13 11:50:26,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 400. [2022-12-13 11:50:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.5129870129870129) internal successors, (466), 313 states have internal predecessors, (466), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 65 states have call predecessors, (71), 65 states have call successors, (71) [2022-12-13 11:50:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 603 transitions. [2022-12-13 11:50:26,771 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 603 transitions. Word has length 139 [2022-12-13 11:50:26,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:26,771 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 603 transitions. [2022-12-13 11:50:26,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:26,771 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 603 transitions. [2022-12-13 11:50:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 11:50:26,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:26,774 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:26,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:50:26,775 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:26,775 INFO L85 PathProgramCache]: Analyzing trace with hash -292483447, now seen corresponding path program 2 times [2022-12-13 11:50:26,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:26,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008063627] [2022-12-13 11:50:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:26,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:50:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:50:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 11:50:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:50:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:50:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 11:50:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:50:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:50:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 11:50:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 11:50:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 11:50:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 11:50:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 11:50:27,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:27,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008063627] [2022-12-13 11:50:27,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008063627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:27,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:27,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 11:50:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728269014] [2022-12-13 11:50:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:27,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:50:27,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:50:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:50:27,002 INFO L87 Difference]: Start difference. First operand 400 states and 603 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:28,499 INFO L93 Difference]: Finished difference Result 899 states and 1359 transitions. [2022-12-13 11:50:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:50:28,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2022-12-13 11:50:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:28,504 INFO L225 Difference]: With dead ends: 899 [2022-12-13 11:50:28,504 INFO L226 Difference]: Without dead ends: 522 [2022-12-13 11:50:28,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 11:50:28,506 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1235 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:28,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 986 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 11:50:28,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-12-13 11:50:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 402. [2022-12-13 11:50:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 309 states have (on average 1.5113268608414239) internal successors, (467), 315 states have internal predecessors, (467), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2022-12-13 11:50:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 606 transitions. [2022-12-13 11:50:28,528 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 606 transitions. Word has length 140 [2022-12-13 11:50:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:28,528 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 606 transitions. [2022-12-13 11:50:28,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 606 transitions. [2022-12-13 11:50:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 11:50:28,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:28,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:28,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:50:28,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash 651330031, now seen corresponding path program 1 times [2022-12-13 11:50:28,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:28,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575753825] [2022-12-13 11:50:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:28,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:50:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:50:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:50:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:50:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:50:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 11:50:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 11:50:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:50:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 11:50:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:50:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 11:50:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 11:50:28,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:28,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575753825] [2022-12-13 11:50:28,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575753825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:28,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:28,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 11:50:28,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703497358] [2022-12-13 11:50:28,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:28,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:50:28,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:50:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:50:28,681 INFO L87 Difference]: Start difference. First operand 402 states and 606 transitions. Second operand has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:29,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:29,943 INFO L93 Difference]: Finished difference Result 899 states and 1358 transitions. [2022-12-13 11:50:29,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:50:29,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2022-12-13 11:50:29,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:29,946 INFO L225 Difference]: With dead ends: 899 [2022-12-13 11:50:29,946 INFO L226 Difference]: Without dead ends: 522 [2022-12-13 11:50:29,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:50:29,947 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1235 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:29,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 988 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 11:50:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-12-13 11:50:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 402. [2022-12-13 11:50:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 309 states have (on average 1.5113268608414239) internal successors, (467), 315 states have internal predecessors, (467), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2022-12-13 11:50:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 606 transitions. [2022-12-13 11:50:29,973 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 606 transitions. Word has length 141 [2022-12-13 11:50:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:29,973 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 606 transitions. [2022-12-13 11:50:29,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:50:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 606 transitions. [2022-12-13 11:50:29,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 11:50:29,975 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:29,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:29,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:50:29,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash 532888557, now seen corresponding path program 1 times [2022-12-13 11:50:29,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:29,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372277166] [2022-12-13 11:50:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:29,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:50:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:50:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:50:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:50:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:50:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 11:50:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 11:50:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:50:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 11:50:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:50:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 11:50:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 11:50:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:30,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372277166] [2022-12-13 11:50:30,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372277166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:30,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:30,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 11:50:30,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414332731] [2022-12-13 11:50:30,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:30,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:50:30,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:30,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:50:30,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:50:30,185 INFO L87 Difference]: Start difference. First operand 402 states and 606 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 11:50:31,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:31,811 INFO L93 Difference]: Finished difference Result 897 states and 1353 transitions. [2022-12-13 11:50:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:50:31,811 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 141 [2022-12-13 11:50:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:31,813 INFO L225 Difference]: With dead ends: 897 [2022-12-13 11:50:31,813 INFO L226 Difference]: Without dead ends: 522 [2022-12-13 11:50:31,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:50:31,814 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1357 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 4307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:31,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 1289 Invalid, 4307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 11:50:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-12-13 11:50:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 402. [2022-12-13 11:50:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 309 states have (on average 1.5113268608414239) internal successors, (467), 315 states have internal predecessors, (467), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (72), 65 states have call predecessors, (72), 65 states have call successors, (72) [2022-12-13 11:50:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 605 transitions. [2022-12-13 11:50:31,838 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 605 transitions. Word has length 141 [2022-12-13 11:50:31,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:31,838 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 605 transitions. [2022-12-13 11:50:31,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 11:50:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 605 transitions. [2022-12-13 11:50:31,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 11:50:31,840 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:31,840 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:31,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:50:31,840 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash 551571089, now seen corresponding path program 2 times [2022-12-13 11:50:31,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:31,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730822807] [2022-12-13 11:50:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:50:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:50:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:50:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:50:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:32,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:50:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 11:50:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 11:50:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 11:50:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 11:50:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 11:50:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 11:50:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 11:50:32,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:32,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730822807] [2022-12-13 11:50:32,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730822807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:32,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:32,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 11:50:32,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015584117] [2022-12-13 11:50:32,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:32,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:50:32,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:32,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:50:32,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:50:32,013 INFO L87 Difference]: Start difference. First operand 402 states and 605 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 11:50:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:33,877 INFO L93 Difference]: Finished difference Result 899 states and 1359 transitions. [2022-12-13 11:50:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:50:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 142 [2022-12-13 11:50:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:33,880 INFO L225 Difference]: With dead ends: 899 [2022-12-13 11:50:33,880 INFO L226 Difference]: Without dead ends: 524 [2022-12-13 11:50:33,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:50:33,881 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1354 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3853 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 4322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 3853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:33,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1288 Invalid, 4322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 3853 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 11:50:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-12-13 11:50:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 404. [2022-12-13 11:50:33,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 310 states have (on average 1.5096774193548388) internal successors, (468), 317 states have internal predecessors, (468), 66 states have call successors, (66), 23 states have call predecessors, (66), 27 states have return successors, (77), 65 states have call predecessors, (77), 65 states have call successors, (77) [2022-12-13 11:50:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 611 transitions. [2022-12-13 11:50:33,910 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 611 transitions. Word has length 142 [2022-12-13 11:50:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:33,910 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 611 transitions. [2022-12-13 11:50:33,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 11:50:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 611 transitions. [2022-12-13 11:50:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 11:50:33,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:33,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:33,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:50:33,912 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:33,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash -586635470, now seen corresponding path program 1 times [2022-12-13 11:50:33,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:33,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903448688] [2022-12-13 11:50:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 11:50:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:50:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 11:50:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 11:50:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:50:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:50:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 11:50:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 11:50:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 11:50:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 11:50:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:50:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 11:50:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:34,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903448688] [2022-12-13 11:50:34,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903448688] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:50:34,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610682078] [2022-12-13 11:50:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:34,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:50:34,078 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:50:34,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:50:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:34,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:50:34,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:50:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:34,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:50:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:34,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610682078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:50:34,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:50:34,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-12-13 11:50:34,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115082511] [2022-12-13 11:50:34,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:50:34,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 11:50:34,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:34,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 11:50:34,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:50:34,358 INFO L87 Difference]: Start difference. First operand 404 states and 611 transitions. Second operand has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-12-13 11:50:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:36,996 INFO L93 Difference]: Finished difference Result 1578 states and 2587 transitions. [2022-12-13 11:50:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 11:50:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 143 [2022-12-13 11:50:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:37,001 INFO L225 Difference]: With dead ends: 1578 [2022-12-13 11:50:37,001 INFO L226 Difference]: Without dead ends: 1205 [2022-12-13 11:50:37,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-12-13 11:50:37,003 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 3046 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 5614 mSolverCounterSat, 1135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 6749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 5614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:37,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 2977 Invalid, 6749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1135 Valid, 5614 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 11:50:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2022-12-13 11:50:37,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 732. [2022-12-13 11:50:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 574 states have (on average 1.5662020905923344) internal successors, (899), 581 states have internal predecessors, (899), 130 states have call successors, (130), 23 states have call predecessors, (130), 27 states have return successors, (151), 129 states have call predecessors, (151), 129 states have call successors, (151) [2022-12-13 11:50:37,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1180 transitions. [2022-12-13 11:50:37,062 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1180 transitions. Word has length 143 [2022-12-13 11:50:37,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:37,063 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 1180 transitions. [2022-12-13 11:50:37,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.857142857142858) internal successors, (152), 11 states have internal predecessors, (152), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2022-12-13 11:50:37,063 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1180 transitions. [2022-12-13 11:50:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 11:50:37,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:37,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:37,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:50:37,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:37,267 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1282197014, now seen corresponding path program 1 times [2022-12-13 11:50:37,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:37,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137243381] [2022-12-13 11:50:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:37,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:50:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 11:50:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 11:50:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 11:50:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:50:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:50:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:50:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:50:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 11:50:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 11:50:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 11:50:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:37,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:37,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137243381] [2022-12-13 11:50:37,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137243381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:37,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:37,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:50:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191721095] [2022-12-13 11:50:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:37,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:50:37,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:50:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:50:37,400 INFO L87 Difference]: Start difference. First operand 732 states and 1180 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:38,739 INFO L93 Difference]: Finished difference Result 1814 states and 2990 transitions. [2022-12-13 11:50:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:50:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-12-13 11:50:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:38,745 INFO L225 Difference]: With dead ends: 1814 [2022-12-13 11:50:38,746 INFO L226 Difference]: Without dead ends: 1160 [2022-12-13 11:50:38,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:50:38,747 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1216 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:38,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 874 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 11:50:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-12-13 11:50:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1032. [2022-12-13 11:50:38,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 810 states have (on average 1.5851851851851853) internal successors, (1284), 817 states have internal predecessors, (1284), 194 states have call successors, (194), 23 states have call predecessors, (194), 27 states have return successors, (225), 193 states have call predecessors, (225), 193 states have call successors, (225) [2022-12-13 11:50:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1703 transitions. [2022-12-13 11:50:38,821 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1703 transitions. Word has length 146 [2022-12-13 11:50:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:38,821 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 1703 transitions. [2022-12-13 11:50:38,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1703 transitions. [2022-12-13 11:50:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:50:38,824 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:38,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:38,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:50:38,824 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:38,825 INFO L85 PathProgramCache]: Analyzing trace with hash -860530826, now seen corresponding path program 1 times [2022-12-13 11:50:38,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:38,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582141838] [2022-12-13 11:50:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:38,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:50:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 11:50:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 11:50:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:50:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:50:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 11:50:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 11:50:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 11:50:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:50:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 11:50:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 11:50:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:38,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:38,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582141838] [2022-12-13 11:50:38,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582141838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:38,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:38,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:50:38,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333568805] [2022-12-13 11:50:38,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:38,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:50:38,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:38,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:50:38,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:50:38,914 INFO L87 Difference]: Start difference. First operand 1032 states and 1703 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:40,053 INFO L93 Difference]: Finished difference Result 2554 states and 4270 transitions. [2022-12-13 11:50:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:50:40,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2022-12-13 11:50:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:40,059 INFO L225 Difference]: With dead ends: 2554 [2022-12-13 11:50:40,059 INFO L226 Difference]: Without dead ends: 1653 [2022-12-13 11:50:40,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:50:40,061 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1215 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:40,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 857 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:50:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2022-12-13 11:50:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1525. [2022-12-13 11:50:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1208 states have (on average 1.5943708609271523) internal successors, (1926), 1215 states have internal predecessors, (1926), 289 states have call successors, (289), 23 states have call predecessors, (289), 27 states have return successors, (320), 288 states have call predecessors, (320), 288 states have call successors, (320) [2022-12-13 11:50:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2535 transitions. [2022-12-13 11:50:40,170 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2535 transitions. Word has length 147 [2022-12-13 11:50:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:40,170 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2535 transitions. [2022-12-13 11:50:40,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2535 transitions. [2022-12-13 11:50:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-12-13 11:50:40,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:40,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:40,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:50:40,175 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:40,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1641850148, now seen corresponding path program 1 times [2022-12-13 11:50:40,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:40,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814888226] [2022-12-13 11:50:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:40,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:50:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 11:50:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:50:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:50:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 11:50:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 11:50:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:50:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 11:50:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 11:50:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 11:50:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 11:50:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:40,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814888226] [2022-12-13 11:50:40,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814888226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:40,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:40,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:50:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940555061] [2022-12-13 11:50:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:50:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:50:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:50:40,268 INFO L87 Difference]: Start difference. First operand 1525 states and 2535 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:41,585 INFO L93 Difference]: Finished difference Result 3656 states and 6188 transitions. [2022-12-13 11:50:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:50:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2022-12-13 11:50:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:41,593 INFO L225 Difference]: With dead ends: 3656 [2022-12-13 11:50:41,593 INFO L226 Difference]: Without dead ends: 2397 [2022-12-13 11:50:41,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:50:41,596 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1211 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:41,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 821 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:50:41,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2022-12-13 11:50:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2269. [2022-12-13 11:50:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 1829 states have (on average 1.6014215418261346) internal successors, (2929), 1836 states have internal predecessors, (2929), 412 states have call successors, (412), 23 states have call predecessors, (412), 27 states have return successors, (459), 411 states have call predecessors, (459), 411 states have call successors, (459) [2022-12-13 11:50:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3800 transitions. [2022-12-13 11:50:41,774 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3800 transitions. Word has length 148 [2022-12-13 11:50:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:41,774 INFO L495 AbstractCegarLoop]: Abstraction has 2269 states and 3800 transitions. [2022-12-13 11:50:41,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:41,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3800 transitions. [2022-12-13 11:50:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 11:50:41,781 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:41,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:41,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:50:41,781 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1267394251, now seen corresponding path program 1 times [2022-12-13 11:50:41,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:41,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507283315] [2022-12-13 11:50:41,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:41,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:50:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:50:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:50:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:50:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:50:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 11:50:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 11:50:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 11:50:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 11:50:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:50:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 11:50:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:41,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:41,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507283315] [2022-12-13 11:50:41,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507283315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:41,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:41,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:50:41,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752238570] [2022-12-13 11:50:41,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:41,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:50:41,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:41,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:50:41,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:50:41,870 INFO L87 Difference]: Start difference. First operand 2269 states and 3800 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:43,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:43,194 INFO L93 Difference]: Finished difference Result 5365 states and 9168 transitions. [2022-12-13 11:50:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:50:43,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2022-12-13 11:50:43,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:43,207 INFO L225 Difference]: With dead ends: 5365 [2022-12-13 11:50:43,207 INFO L226 Difference]: Without dead ends: 3581 [2022-12-13 11:50:43,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:50:43,211 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1209 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:43,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 822 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:50:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2022-12-13 11:50:43,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3453. [2022-12-13 11:50:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 2834 states have (on average 1.6058574453069865) internal successors, (4551), 2841 states have internal predecessors, (4551), 591 states have call successors, (591), 23 states have call predecessors, (591), 27 states have return successors, (664), 590 states have call predecessors, (664), 590 states have call successors, (664) [2022-12-13 11:50:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 5806 transitions. [2022-12-13 11:50:43,495 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 5806 transitions. Word has length 149 [2022-12-13 11:50:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:43,496 INFO L495 AbstractCegarLoop]: Abstraction has 3453 states and 5806 transitions. [2022-12-13 11:50:43,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 5806 transitions. [2022-12-13 11:50:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-13 11:50:43,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:43,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:43,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 11:50:43,504 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:43,505 INFO L85 PathProgramCache]: Analyzing trace with hash 187518816, now seen corresponding path program 1 times [2022-12-13 11:50:43,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:43,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275382245] [2022-12-13 11:50:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:50:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:50:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:50:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 11:50:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 11:50:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 11:50:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 11:50:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 11:50:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 11:50:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 11:50:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 11:50:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:43,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:43,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275382245] [2022-12-13 11:50:43,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275382245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:43,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:43,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:50:43,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089322482] [2022-12-13 11:50:43,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:43,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:50:43,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:50:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:50:43,591 INFO L87 Difference]: Start difference. First operand 3453 states and 5806 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:45,035 INFO L93 Difference]: Finished difference Result 8438 states and 14484 transitions. [2022-12-13 11:50:45,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:50:45,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2022-12-13 11:50:45,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:45,050 INFO L225 Difference]: With dead ends: 8438 [2022-12-13 11:50:45,050 INFO L226 Difference]: Without dead ends: 5722 [2022-12-13 11:50:45,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:50:45,055 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1209 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:45,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 869 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:50:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2022-12-13 11:50:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 5594. [2022-12-13 11:50:45,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 4599 states have (on average 1.599695585996956) internal successors, (7357), 4606 states have internal predecessors, (7357), 967 states have call successors, (967), 23 states have call predecessors, (967), 27 states have return successors, (1084), 966 states have call predecessors, (1084), 966 states have call successors, (1084) [2022-12-13 11:50:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 9408 transitions. [2022-12-13 11:50:45,477 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 9408 transitions. Word has length 150 [2022-12-13 11:50:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:45,477 INFO L495 AbstractCegarLoop]: Abstraction has 5594 states and 9408 transitions. [2022-12-13 11:50:45,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 9408 transitions. [2022-12-13 11:50:45,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 11:50:45,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:45,489 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:45,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 11:50:45,489 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:45,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:45,489 INFO L85 PathProgramCache]: Analyzing trace with hash -758318927, now seen corresponding path program 1 times [2022-12-13 11:50:45,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:45,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234784563] [2022-12-13 11:50:45,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:45,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 11:50:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:50:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 11:50:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 11:50:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:50:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:50:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 11:50:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 11:50:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:50:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 11:50:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:50:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:45,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:45,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234784563] [2022-12-13 11:50:45,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234784563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:45,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:45,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:50:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245307473] [2022-12-13 11:50:45,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:45,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:50:45,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:45,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:50:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:50:45,585 INFO L87 Difference]: Start difference. First operand 5594 states and 9408 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:47,376 INFO L93 Difference]: Finished difference Result 13860 states and 23785 transitions. [2022-12-13 11:50:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:50:47,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2022-12-13 11:50:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:47,404 INFO L225 Difference]: With dead ends: 13860 [2022-12-13 11:50:47,404 INFO L226 Difference]: Without dead ends: 9405 [2022-12-13 11:50:47,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:50:47,413 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1208 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:47,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 846 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:50:47,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9405 states. [2022-12-13 11:50:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9405 to 9277. [2022-12-13 11:50:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 7676 states have (on average 1.5977071391349662) internal successors, (12264), 7683 states have internal predecessors, (12264), 1573 states have call successors, (1573), 23 states have call predecessors, (1573), 27 states have return successors, (1768), 1572 states have call predecessors, (1768), 1572 states have call successors, (1768) [2022-12-13 11:50:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 15605 transitions. [2022-12-13 11:50:48,160 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 15605 transitions. Word has length 151 [2022-12-13 11:50:48,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:48,160 INFO L495 AbstractCegarLoop]: Abstraction has 9277 states and 15605 transitions. [2022-12-13 11:50:48,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 15605 transitions. [2022-12-13 11:50:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 11:50:48,177 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:48,178 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:48,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 11:50:48,178 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1404498466, now seen corresponding path program 1 times [2022-12-13 11:50:48,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:48,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093999121] [2022-12-13 11:50:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:48,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 11:50:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 11:50:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:50:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:50:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 11:50:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:50:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 11:50:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:50:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 11:50:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 11:50:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:50:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:48,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:48,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093999121] [2022-12-13 11:50:48,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093999121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:48,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:48,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:50:48,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213459146] [2022-12-13 11:50:48,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:48,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:50:48,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:48,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:50:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:50:48,267 INFO L87 Difference]: Start difference. First operand 9277 states and 15605 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:50,465 INFO L93 Difference]: Finished difference Result 24044 states and 41226 transitions. [2022-12-13 11:50:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:50:50,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2022-12-13 11:50:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:50,505 INFO L225 Difference]: With dead ends: 24044 [2022-12-13 11:50:50,505 INFO L226 Difference]: Without dead ends: 16358 [2022-12-13 11:50:50,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:50:50,519 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1204 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:50,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 852 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:50:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16358 states. [2022-12-13 11:50:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16358 to 16230. [2022-12-13 11:50:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16230 states, 13426 states have (on average 1.5890064054819009) internal successors, (21334), 13433 states have internal predecessors, (21334), 2776 states have call successors, (2776), 23 states have call predecessors, (2776), 27 states have return successors, (3115), 2775 states have call predecessors, (3115), 2775 states have call successors, (3115) [2022-12-13 11:50:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16230 states to 16230 states and 27225 transitions. [2022-12-13 11:50:51,847 INFO L78 Accepts]: Start accepts. Automaton has 16230 states and 27225 transitions. Word has length 152 [2022-12-13 11:50:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:51,847 INFO L495 AbstractCegarLoop]: Abstraction has 16230 states and 27225 transitions. [2022-12-13 11:50:51,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 16230 states and 27225 transitions. [2022-12-13 11:50:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 11:50:51,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:51,874 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:51,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 11:50:51,874 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:51,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1896303312, now seen corresponding path program 1 times [2022-12-13 11:50:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:51,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882134612] [2022-12-13 11:50:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:51,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 11:50:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:50:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 11:50:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:50:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 11:50:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 11:50:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:50:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 11:50:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 11:50:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 11:50:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 11:50:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:51,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:51,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882134612] [2022-12-13 11:50:51,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882134612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:51,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:51,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:50:51,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322475736] [2022-12-13 11:50:51,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:51,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:50:51,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:50:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:50:51,957 INFO L87 Difference]: Start difference. First operand 16230 states and 27225 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:55,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:55,363 INFO L93 Difference]: Finished difference Result 43010 states and 73623 transitions. [2022-12-13 11:50:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:50:55,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2022-12-13 11:50:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:55,436 INFO L225 Difference]: With dead ends: 43010 [2022-12-13 11:50:55,436 INFO L226 Difference]: Without dead ends: 29013 [2022-12-13 11:50:55,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:50:55,464 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1204 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:55,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 822 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:50:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29013 states. [2022-12-13 11:50:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29013 to 28885. [2022-12-13 11:50:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28885 states, 24042 states have (on average 1.5847683221029865) internal successors, (38101), 24049 states have internal predecessors, (38101), 4815 states have call successors, (4815), 23 states have call predecessors, (4815), 27 states have return successors, (5428), 4814 states have call predecessors, (5428), 4814 states have call successors, (5428) [2022-12-13 11:50:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28885 states to 28885 states and 48344 transitions. [2022-12-13 11:50:58,038 INFO L78 Accepts]: Start accepts. Automaton has 28885 states and 48344 transitions. Word has length 153 [2022-12-13 11:50:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:58,038 INFO L495 AbstractCegarLoop]: Abstraction has 28885 states and 48344 transitions. [2022-12-13 11:50:58,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:50:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 28885 states and 48344 transitions. [2022-12-13 11:50:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 11:50:58,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:58,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:58,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 11:50:58,074 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2012004348, now seen corresponding path program 1 times [2022-12-13 11:50:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:58,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414122858] [2022-12-13 11:50:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:58,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:50:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:50:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:50:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:50:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:50:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:50:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:50:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:50:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 11:50:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 11:50:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:50:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:50:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 11:50:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:50:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 11:50:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 11:50:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 11:50:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:50:58,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:58,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414122858] [2022-12-13 11:50:58,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414122858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:58,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:58,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:50:58,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351374781] [2022-12-13 11:50:58,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:58,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:50:58,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:50:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:50:58,157 INFO L87 Difference]: Start difference. First operand 28885 states and 48344 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:51:03,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:51:03,758 INFO L93 Difference]: Finished difference Result 78772 states and 133987 transitions. [2022-12-13 11:51:03,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:51:03,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-12-13 11:51:03,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:51:03,945 INFO L225 Difference]: With dead ends: 78772 [2022-12-13 11:51:03,946 INFO L226 Difference]: Without dead ends: 52892 [2022-12-13 11:51:03,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:51:03,994 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1199 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:51:03,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 828 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 11:51:04,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52892 states. [2022-12-13 11:51:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52892 to 52764. [2022-12-13 11:51:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52764 states, 44206 states have (on average 1.5790616658372167) internal successors, (69804), 44213 states have internal predecessors, (69804), 8530 states have call successors, (8530), 23 states have call predecessors, (8530), 27 states have return successors, (9675), 8529 states have call predecessors, (9675), 8529 states have call successors, (9675) [2022-12-13 11:51:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52764 states to 52764 states and 88009 transitions. [2022-12-13 11:51:08,365 INFO L78 Accepts]: Start accepts. Automaton has 52764 states and 88009 transitions. Word has length 154 [2022-12-13 11:51:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:51:08,365 INFO L495 AbstractCegarLoop]: Abstraction has 52764 states and 88009 transitions. [2022-12-13 11:51:08,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:51:08,366 INFO L276 IsEmpty]: Start isEmpty. Operand 52764 states and 88009 transitions. [2022-12-13 11:51:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-13 11:51:08,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:51:08,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:51:08,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 11:51:08,417 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:51:08,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:51:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash 897281520, now seen corresponding path program 1 times [2022-12-13 11:51:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:51:08,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837377377] [2022-12-13 11:51:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:51:08,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:51:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:51:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:51:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:51:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:51:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:51:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:51:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:51:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 11:51:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:51:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:51:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 11:51:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 11:51:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 11:51:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 11:51:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:51:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 11:51:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 11:51:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:51:08,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:51:08,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837377377] [2022-12-13 11:51:08,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837377377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:51:08,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:51:08,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:51:08,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654541528] [2022-12-13 11:51:08,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:51:08,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:51:08,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:51:08,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:51:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:51:08,501 INFO L87 Difference]: Start difference. First operand 52764 states and 88009 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:51:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:51:16,682 INFO L93 Difference]: Finished difference Result 98543 states and 167917 transitions. [2022-12-13 11:51:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:51:16,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-12-13 11:51:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:51:16,963 INFO L225 Difference]: With dead ends: 98543 [2022-12-13 11:51:16,963 INFO L226 Difference]: Without dead ends: 98351 [2022-12-13 11:51:16,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:51:16,994 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1199 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:51:16,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 824 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:51:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98351 states. [2022-12-13 11:51:24,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98351 to 98223. [2022-12-13 11:51:24,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98223 states, 82866 states have (on average 1.5718268047208748) internal successors, (130251), 82873 states have internal predecessors, (130251), 15329 states have call successors, (15329), 23 states have call predecessors, (15329), 27 states have return successors, (17520), 15328 states have call predecessors, (17520), 15328 states have call successors, (17520) [2022-12-13 11:51:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98223 states to 98223 states and 163100 transitions. [2022-12-13 11:51:24,869 INFO L78 Accepts]: Start accepts. Automaton has 98223 states and 163100 transitions. Word has length 155 [2022-12-13 11:51:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:51:24,869 INFO L495 AbstractCegarLoop]: Abstraction has 98223 states and 163100 transitions. [2022-12-13 11:51:24,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:51:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 98223 states and 163100 transitions. [2022-12-13 11:51:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 11:51:24,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:51:24,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:51:24,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 11:51:24,932 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:51:24,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:51:24,933 INFO L85 PathProgramCache]: Analyzing trace with hash 309541469, now seen corresponding path program 1 times [2022-12-13 11:51:24,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:51:24,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129676108] [2022-12-13 11:51:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:51:24,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:51:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:51:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:51:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:51:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:51:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:51:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:51:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:51:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 11:51:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:51:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 11:51:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 11:51:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 11:51:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 11:51:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 11:51:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 11:51:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 11:51:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 11:51:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:51:25,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:51:25,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129676108] [2022-12-13 11:51:25,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129676108] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:51:25,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723150520] [2022-12-13 11:51:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:51:25,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:51:25,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:51:25,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:51:25,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:51:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:25,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 11:51:25,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:51:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 11:51:25,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:51:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 11:51:25,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723150520] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:51:25,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:51:25,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2022-12-13 11:51:25,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514957220] [2022-12-13 11:51:25,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:51:25,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 11:51:25,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:51:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 11:51:25,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2022-12-13 11:51:25,785 INFO L87 Difference]: Start difference. First operand 98223 states and 163100 transitions. Second operand has 32 states, 30 states have (on average 8.466666666666667) internal successors, (254), 24 states have internal predecessors, (254), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2022-12-13 11:52:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:52:35,167 INFO L93 Difference]: Finished difference Result 588345 states and 1025859 transitions. [2022-12-13 11:52:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-12-13 11:52:35,168 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.466666666666667) internal successors, (254), 24 states have internal predecessors, (254), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 156 [2022-12-13 11:52:35,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:52:37,924 INFO L225 Difference]: With dead ends: 588345 [2022-12-13 11:52:37,924 INFO L226 Difference]: Without dead ends: 588157 [2022-12-13 11:52:38,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12529 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4333, Invalid=31199, Unknown=0, NotChecked=0, Total=35532 [2022-12-13 11:52:38,157 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 6522 mSDsluCounter, 13900 mSDsCounter, 0 mSdLazyCounter, 49966 mSolverCounterSat, 6966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6546 SdHoareTripleChecker+Valid, 14523 SdHoareTripleChecker+Invalid, 56932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 6966 IncrementalHoareTripleChecker+Valid, 49966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:52:38,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6546 Valid, 14523 Invalid, 56932 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [6966 Valid, 49966 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2022-12-13 11:52:38,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588157 states. [2022-12-13 11:53:19,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588157 to 391489. [2022-12-13 11:53:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391489 states, 330380 states have (on average 1.5725467643319813) internal successors, (519538), 330194 states have internal predecessors, (519538), 60956 states have call successors, (60956), 126 states have call predecessors, (60956), 152 states have return successors, (84934), 61184 states have call predecessors, (84934), 60950 states have call successors, (84934) [2022-12-13 11:53:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391489 states to 391489 states and 665428 transitions. [2022-12-13 11:53:21,137 INFO L78 Accepts]: Start accepts. Automaton has 391489 states and 665428 transitions. Word has length 156 [2022-12-13 11:53:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:53:21,137 INFO L495 AbstractCegarLoop]: Abstraction has 391489 states and 665428 transitions. [2022-12-13 11:53:21,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.466666666666667) internal successors, (254), 24 states have internal predecessors, (254), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2022-12-13 11:53:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 391489 states and 665428 transitions. [2022-12-13 11:53:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 11:53:21,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:53:21,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:53:21,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:53:21,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:53:21,758 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:53:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:21,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1649969346, now seen corresponding path program 1 times [2022-12-13 11:53:21,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:53:21,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899850682] [2022-12-13 11:53:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:21,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:53:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:53:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:53:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:53:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:53:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:53:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:53:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:53:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 11:53:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:53:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 11:53:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 11:53:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 11:53:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 11:53:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:53:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 11:53:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:53:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 11:53:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 11:53:21,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:53:21,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899850682] [2022-12-13 11:53:21,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899850682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:21,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:21,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 11:53:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461117678] [2022-12-13 11:53:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:21,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:53:21,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:53:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:53:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:53:21,909 INFO L87 Difference]: Start difference. First operand 391489 states and 665428 transitions. Second operand has 9 states, 8 states have (on average 13.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:53:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:53:56,337 INFO L93 Difference]: Finished difference Result 393019 states and 680594 transitions. [2022-12-13 11:53:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:53:56,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 158 [2022-12-13 11:53:56,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:53:57,741 INFO L225 Difference]: With dead ends: 393019 [2022-12-13 11:53:57,741 INFO L226 Difference]: Without dead ends: 391961 [2022-12-13 11:53:57,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:53:57,871 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1117 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:53:57,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1106 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 11:53:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391961 states. [2022-12-13 11:54:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391961 to 391145. [2022-12-13 11:54:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391145 states, 330130 states have (on average 1.5727077212007392) internal successors, (519198), 329935 states have internal predecessors, (519198), 60878 states have call successors, (60878), 116 states have call predecessors, (60878), 136 states have return successors, (84837), 61103 states have call predecessors, (84837), 60872 states have call successors, (84837) [2022-12-13 11:54:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391145 states to 391145 states and 664913 transitions. [2022-12-13 11:54:37,553 INFO L78 Accepts]: Start accepts. Automaton has 391145 states and 664913 transitions. Word has length 158 [2022-12-13 11:54:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:54:37,554 INFO L495 AbstractCegarLoop]: Abstraction has 391145 states and 664913 transitions. [2022-12-13 11:54:37,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 11:54:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 391145 states and 664913 transitions. [2022-12-13 11:54:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 11:54:37,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:54:37,880 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 11:54:37,880 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:54:37,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1947276882, now seen corresponding path program 1 times [2022-12-13 11:54:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:37,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800491611] [2022-12-13 11:54:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:37,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:54:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:54:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:54:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:54:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:54:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:54:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:54:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 11:54:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:54:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:54:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:54:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 11:54:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 11:54:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:54:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 11:54:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:54:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 11:54:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 11:54:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:38,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800491611] [2022-12-13 11:54:38,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800491611] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:54:38,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404689988] [2022-12-13 11:54:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:38,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:54:38,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:38,068 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:54:38,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:54:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:38,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 11:54:38,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 11:54:38,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:38,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404689988] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:38,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:54:38,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-12-13 11:54:38,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90313407] [2022-12-13 11:54:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:38,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:54:38,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:38,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:54:38,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:54:38,443 INFO L87 Difference]: Start difference. First operand 391145 states and 664913 transitions. Second operand has 9 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 11:55:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:13,139 INFO L93 Difference]: Finished difference Result 392531 states and 666894 transitions. [2022-12-13 11:55:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:55:13,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 158 [2022-12-13 11:55:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:14,609 INFO L225 Difference]: With dead ends: 392531 [2022-12-13 11:55:14,609 INFO L226 Difference]: Without dead ends: 391319 [2022-12-13 11:55:14,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2022-12-13 11:55:14,732 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 750 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 3415 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:14,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 3415 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:55:15,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391319 states. [2022-12-13 11:55:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391319 to 391305. [2022-12-13 11:55:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391305 states, 330240 states have (on average 1.5726259689922482) internal successors, (519344), 330051 states have internal predecessors, (519344), 60924 states have call successors, (60924), 120 states have call predecessors, (60924), 140 states have return successors, (84909), 61147 states have call predecessors, (84909), 60918 states have call successors, (84909) [2022-12-13 11:55:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391305 states to 391305 states and 665177 transitions. [2022-12-13 11:55:55,822 INFO L78 Accepts]: Start accepts. Automaton has 391305 states and 665177 transitions. Word has length 158 [2022-12-13 11:55:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:55,823 INFO L495 AbstractCegarLoop]: Abstraction has 391305 states and 665177 transitions. [2022-12-13 11:55:55,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 11:55:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 391305 states and 665177 transitions. [2022-12-13 11:55:56,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 11:55:56,280 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:56,280 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:56,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:55:56,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:56,482 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:56,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:56,483 INFO L85 PathProgramCache]: Analyzing trace with hash -63942556, now seen corresponding path program 1 times [2022-12-13 11:55:56,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:56,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144045861] [2022-12-13 11:55:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:56,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:55:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:55:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 11:55:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 11:55:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 11:55:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 11:55:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 11:55:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:55:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:55:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:55:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:55:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 11:55:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 11:55:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:55:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 11:55:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:55:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 11:55:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 11:55:56,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:56,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144045861] [2022-12-13 11:55:56,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144045861] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:56,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568023729] [2022-12-13 11:55:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:56,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:56,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:56,631 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:56,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:55:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:56,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:55:56,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 11:55:56,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:55:56,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568023729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:56,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:55:56,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-13 11:55:56,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633268688] [2022-12-13 11:55:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:56,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:55:56,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:55:56,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:55:56,858 INFO L87 Difference]: Start difference. First operand 391305 states and 665177 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:56:35,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:35,530 INFO L93 Difference]: Finished difference Result 586969 states and 1002105 transitions. [2022-12-13 11:56:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:56:35,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2022-12-13 11:56:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:37,104 INFO L225 Difference]: With dead ends: 586969 [2022-12-13 11:56:37,104 INFO L226 Difference]: Without dead ends: 391321 [2022-12-13 11:56:37,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:56:37,483 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 123 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:37,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1840 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:56:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391321 states. [2022-12-13 11:57:19,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391321 to 391305. [2022-12-13 11:57:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391305 states, 330240 states have (on average 1.5726199127906977) internal successors, (519342), 330051 states have internal predecessors, (519342), 60924 states have call successors, (60924), 120 states have call predecessors, (60924), 140 states have return successors, (84909), 61147 states have call predecessors, (84909), 60918 states have call successors, (84909) [2022-12-13 11:57:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391305 states to 391305 states and 665175 transitions. [2022-12-13 11:57:21,090 INFO L78 Accepts]: Start accepts. Automaton has 391305 states and 665175 transitions. Word has length 158 [2022-12-13 11:57:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:21,091 INFO L495 AbstractCegarLoop]: Abstraction has 391305 states and 665175 transitions. [2022-12-13 11:57:21,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 11:57:21,091 INFO L276 IsEmpty]: Start isEmpty. Operand 391305 states and 665175 transitions. [2022-12-13 11:57:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 11:57:21,555 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:21,555 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:21,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:57:21,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:21,757 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1338510417, now seen corresponding path program 1 times [2022-12-13 11:57:21,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:21,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711685958] [2022-12-13 11:57:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:21,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 11:57:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 11:57:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 11:57:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 11:57:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:57:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:57:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:57:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 11:57:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:57:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 11:57:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 11:57:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:57:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:57:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 11:57:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 11:57:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 11:57:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:57:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:21,939 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 11:57:21,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:21,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711685958] [2022-12-13 11:57:21,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711685958] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:21,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963878273] [2022-12-13 11:57:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:21,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:21,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:21,941 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:21,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 11:57:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:22,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:57:22,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 11:57:22,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:57:22,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963878273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:57:22,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:57:22,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 25 [2022-12-13 11:57:22,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127724370] [2022-12-13 11:57:22,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:57:22,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:57:22,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:22,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:57:22,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:57:22,494 INFO L87 Difference]: Start difference. First operand 391305 states and 665175 transitions. Second operand has 14 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-12-13 11:58:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:58:41,479 INFO L93 Difference]: Finished difference Result 777243 states and 1343074 transitions. [2022-12-13 11:58:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 11:58:41,480 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 159 [2022-12-13 11:58:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:58:44,755 INFO L225 Difference]: With dead ends: 777243 [2022-12-13 11:58:44,755 INFO L226 Difference]: Without dead ends: 776175 [2022-12-13 11:58:45,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 11:58:45,012 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1410 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:58:45,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 5353 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 11:58:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776175 states. [2022-12-13 12:00:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776175 to 775649. [2022-12-13 12:00:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775649 states, 654852 states have (on average 1.5739403712594602) internal successors, (1030698), 654125 states have internal predecessors, (1030698), 120504 states have call successors, (120504), 252 states have call predecessors, (120504), 292 states have return successors, (189577), 121301 states have call predecessors, (189577), 120490 states have call successors, (189577) [2022-12-13 12:00:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775649 states to 775649 states and 1340779 transitions. [2022-12-13 12:00:16,502 INFO L78 Accepts]: Start accepts. Automaton has 775649 states and 1340779 transitions. Word has length 159 [2022-12-13 12:00:16,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:16,503 INFO L495 AbstractCegarLoop]: Abstraction has 775649 states and 1340779 transitions. [2022-12-13 12:00:16,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-12-13 12:00:16,503 INFO L276 IsEmpty]: Start isEmpty. Operand 775649 states and 1340779 transitions. [2022-12-13 12:00:17,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 12:00:17,339 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:17,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:17,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 12:00:17,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 12:00:17,542 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:17,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash -368929394, now seen corresponding path program 1 times [2022-12-13 12:00:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:17,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875389329] [2022-12-13 12:00:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:17,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:00:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:00:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 12:00:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:00:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 12:00:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:00:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 12:00:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 12:00:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 12:00:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 12:00:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 12:00:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:00:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 12:00:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 12:00:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 12:00:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 12:00:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:00:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 12:00:17,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:17,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875389329] [2022-12-13 12:00:17,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875389329] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:00:17,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645039306] [2022-12-13 12:00:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:17,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:17,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:17,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:17,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3a3fc66-5380-4bf9-a066-4eaac7f21ace/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 12:00:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:17,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 12:00:17,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 12:00:18,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 12:00:18,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645039306] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 12:00:18,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:00:18,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 5] total 18 [2022-12-13 12:00:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248594564] [2022-12-13 12:00:18,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:00:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:00:18,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:00:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-12-13 12:00:18,170 INFO L87 Difference]: Start difference. First operand 775649 states and 1340779 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17)