./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/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_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/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_bdf3b208-f91b-479a-9e06-594210b49e39/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 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 --- 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 22:15:41,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:15:41,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:15:41,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:15:41,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:15:41,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:15:41,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:15:41,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:15:41,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:15:41,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:15:41,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:15:41,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:15:41,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:15:41,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:15:41,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:15:41,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:15:41,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:15:41,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:15:41,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:15:41,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:15:41,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:15:41,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:15:41,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:15:41,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:15:41,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:15:41,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:15:41,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:15:41,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:15:41,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:15:41,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:15:41,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:15:41,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:15:41,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:15:41,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:15:41,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:15:41,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:15:41,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:15:41,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:15:41,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:15:41,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:15:41,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:15:41,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:15:41,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:15:41,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:15:41,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:15:41,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:15:41,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:15:41,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:15:41,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:15:41,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:15:41,757 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:15:41,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:15:41,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:15:41,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:15:41,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:15:41,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:15:41,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:15:41,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:15:41,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:15:41,758 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:15:41,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:15:41,758 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:15:41,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:15:41,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:15:41,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:15:41,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:15:41,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:15:41,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:15:41,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:15:41,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:15:41,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:15:41,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:15:41,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:15:41,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:15:41,760 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:15:41,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:15:41,761 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:15:41,761 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_bdf3b208-f91b-479a-9e06-594210b49e39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 [2022-12-13 22:15:41,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:15:41,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:15:41,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:15:41,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:15:41,966 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:15:41,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2022-12-13 22:15:44,488 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:15:44,726 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:15:44,727 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2022-12-13 22:15:44,738 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/data/78471537b/a88f61d6662f4d33946d40ad78d005f0/FLAGeb861c3b6 [2022-12-13 22:15:45,088 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/data/78471537b/a88f61d6662f4d33946d40ad78d005f0 [2022-12-13 22:15:45,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:15:45,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:15:45,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:15:45,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:15:45,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:15:45,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e6aa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45, skipping insertion in model container [2022-12-13 22:15:45,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:15:45,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:15:45,401 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,434 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,436 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,440 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,446 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_bdf3b208-f91b-479a-9e06-594210b49e39/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2022-12-13 22:15:45,530 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,532 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,537 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:15:45,547 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:15:45,569 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,572 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,573 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,574 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,577 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_bdf3b208-f91b-479a-9e06-594210b49e39/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2022-12-13 22:15:45,608 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,609 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,612 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:15:45,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:15:45,632 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:15:45,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45 WrapperNode [2022-12-13 22:15:45,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:15:45,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:15:45,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:15:45,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:15:45,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,692 INFO L138 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 949 [2022-12-13 22:15:45,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:15:45,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:15:45,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:15:45,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:15:45,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,724 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:15:45,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:15:45,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:15:45,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:15:45,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (1/1) ... [2022-12-13 22:15:45,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:15:45,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:45,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:15:45,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:15:45,788 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-13 22:15:45,788 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-13 22:15:45,788 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-13 22:15:45,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-13 22:15:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-13 22:15:45,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-13 22:15:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-13 22:15:45,789 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-13 22:15:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-13 22:15:45,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-13 22:15:45,789 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-13 22:15:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-13 22:15:45,790 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-13 22:15:45,790 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-13 22:15:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-13 22:15:45,790 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-13 22:15:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-13 22:15:45,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:15:45,790 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-13 22:15:45,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-13 22:15:45,791 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-13 22:15:45,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-13 22:15:45,791 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-13 22:15:45,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-13 22:15:45,791 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-13 22:15:45,791 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-13 22:15:45,791 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-13 22:15:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-13 22:15:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-13 22:15:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-13 22:15:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-13 22:15:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-13 22:15:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-13 22:15:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-13 22:15:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-13 22:15:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-13 22:15:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:15:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-13 22:15:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-13 22:15:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:15:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:15:45,955 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:15:45,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:15:46,505 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:15:46,512 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:15:46,512 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 22:15:46,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:15:46 BoogieIcfgContainer [2022-12-13 22:15:46,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:15:46,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:15:46,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:15:46,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:15:46,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:15:45" (1/3) ... [2022-12-13 22:15:46,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7720d0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:15:46, skipping insertion in model container [2022-12-13 22:15:46,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:45" (2/3) ... [2022-12-13 22:15:46,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7720d0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:15:46, skipping insertion in model container [2022-12-13 22:15:46,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:15:46" (3/3) ... [2022-12-13 22:15:46,520 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.c [2022-12-13 22:15:46,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:15:46,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:15:46,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:15:46,592 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;@f0edc65, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:15:46,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 22:15:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 250 states have internal predecessors, (378), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-12-13 22:15:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 22:15:46,609 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:46,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:46,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1318613566, now seen corresponding path program 1 times [2022-12-13 22:15:46,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:46,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166997759] [2022-12-13 22:15:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:46,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:15:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 22:15:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 22:15:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:15:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 22:15:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 22:15:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 22:15:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:15:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 22:15:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 22:15:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 22:15:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 22:15:47,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:47,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166997759] [2022-12-13 22:15:47,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166997759] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:47,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954653755] [2022-12-13 22:15:47,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:47,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:47,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:47,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:47,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:15:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:47,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 22:15:47,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 22:15:47,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:15:47,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954653755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:47,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:15:47,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-12-13 22:15:47,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896946490] [2022-12-13 22:15:47,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:47,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 22:15:47,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 22:15:47,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:15:47,416 INFO L87 Difference]: Start difference. First operand has 314 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 250 states have internal predecessors, (378), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:15:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:47,466 INFO L93 Difference]: Finished difference Result 474 states and 694 transitions. [2022-12-13 22:15:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 22:15:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2022-12-13 22:15:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:47,478 INFO L225 Difference]: With dead ends: 474 [2022-12-13 22:15:47,478 INFO L226 Difference]: Without dead ends: 307 [2022-12-13 22:15:47,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 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 22:15:47,484 INFO L413 NwaCegarLoop]: 466 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, 466 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 22:15:47,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:15:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-12-13 22:15:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2022-12-13 22:15:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 242 states have (on average 1.5165289256198347) internal successors, (367), 243 states have internal predecessors, (367), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-12-13 22:15:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 458 transitions. [2022-12-13 22:15:47,540 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 458 transitions. Word has length 108 [2022-12-13 22:15:47,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:47,541 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 458 transitions. [2022-12-13 22:15:47,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:15:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 458 transitions. [2022-12-13 22:15:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 22:15:47,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:47,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:47,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:15:47,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 22:15:47,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash -406077674, now seen corresponding path program 1 times [2022-12-13 22:15:47,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:47,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886942529] [2022-12-13 22:15:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:47,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:15:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 22:15:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 22:15:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 22:15:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 22:15:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 22:15:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 22:15:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 22:15:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 22:15:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 22:15:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 22:15:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 22:15:48,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:48,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886942529] [2022-12-13 22:15:48,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886942529] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:48,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184262768] [2022-12-13 22:15:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:48,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:48,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:48,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:48,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:15:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:15:48,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 22:15:48,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:15:48,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184262768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:48,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:15:48,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 22:15:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87893387] [2022-12-13 22:15:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:48,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:15:48,400 INFO L87 Difference]: Start difference. First operand 307 states and 458 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:15:48,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:48,444 INFO L93 Difference]: Finished difference Result 464 states and 675 transitions. [2022-12-13 22:15:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:48,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2022-12-13 22:15:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:48,447 INFO L225 Difference]: With dead ends: 464 [2022-12-13 22:15:48,448 INFO L226 Difference]: Without dead ends: 310 [2022-12-13 22:15:48,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 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 22:15:48,450 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 910 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 22:15:48,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 910 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:15:48,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-12-13 22:15:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2022-12-13 22:15:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 244 states have (on average 1.5122950819672132) internal successors, (369), 245 states have internal predecessors, (369), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-12-13 22:15:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 460 transitions. [2022-12-13 22:15:48,473 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 460 transitions. Word has length 109 [2022-12-13 22:15:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:48,473 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 460 transitions. [2022-12-13 22:15:48,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:15:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 460 transitions. [2022-12-13 22:15:48,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 22:15:48,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:48,478 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:48,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 22:15:48,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:48,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:48,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:48,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1521216077, now seen corresponding path program 1 times [2022-12-13 22:15:48,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:48,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020985482] [2022-12-13 22:15:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:15:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 22:15:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 22:15:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:15:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 22:15:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 22:15:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 22:15:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 22:15:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 22:15:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 22:15:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 22:15:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 22:15:48,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:48,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020985482] [2022-12-13 22:15:48,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020985482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:48,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575028589] [2022-12-13 22:15:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:48,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:48,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:48,987 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:48,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:15:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:15:49,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 22:15:49,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:15:49,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575028589] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:49,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:15:49,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 22:15:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602589189] [2022-12-13 22:15:49,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:49,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:15:49,195 INFO L87 Difference]: Start difference. First operand 309 states and 460 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:15:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:49,232 INFO L93 Difference]: Finished difference Result 648 states and 979 transitions. [2022-12-13 22:15:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:49,233 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2022-12-13 22:15:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:49,236 INFO L225 Difference]: With dead ends: 648 [2022-12-13 22:15:49,236 INFO L226 Difference]: Without dead ends: 366 [2022-12-13 22:15:49,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 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 22:15:49,239 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 107 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 885 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 22:15:49,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 885 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:15:49,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-12-13 22:15:49,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 358. [2022-12-13 22:15:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 282 states have (on average 1.5283687943262412) internal successors, (431), 283 states have internal predecessors, (431), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-12-13 22:15:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 544 transitions. [2022-12-13 22:15:49,267 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 544 transitions. Word has length 115 [2022-12-13 22:15:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:49,267 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 544 transitions. [2022-12-13 22:15:49,267 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:15:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 544 transitions. [2022-12-13 22:15:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 22:15:49,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:49,277 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:49,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:15:49,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:49,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1805215575, now seen corresponding path program 1 times [2022-12-13 22:15:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:49,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555787788] [2022-12-13 22:15:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 22:15:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 22:15:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 22:15:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 22:15:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 22:15:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 22:15:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 22:15:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 22:15:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 22:15:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 22:15:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 22:15:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 22:15:49,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:49,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555787788] [2022-12-13 22:15:49,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555787788] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:49,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032628556] [2022-12-13 22:15:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:49,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:49,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:49,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:49,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:15:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:49,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 22:15:49,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 22:15:49,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:15:49,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032628556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:49,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:15:49,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-13 22:15:49,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054394624] [2022-12-13 22:15:49,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:49,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:15:49,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:49,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:15:49,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:15:49,913 INFO L87 Difference]: Start difference. First operand 358 states and 544 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 22:15:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:49,972 INFO L93 Difference]: Finished difference Result 707 states and 1078 transitions. [2022-12-13 22:15:49,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:15:49,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-12-13 22:15:49,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:49,977 INFO L225 Difference]: With dead ends: 707 [2022-12-13 22:15:49,977 INFO L226 Difference]: Without dead ends: 360 [2022-12-13 22:15:49,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 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 22:15:49,980 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 125 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1651 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 22:15:49,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1651 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:15:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-12-13 22:15:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2022-12-13 22:15:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 283 states have (on average 1.5265017667844523) internal successors, (432), 285 states have internal predecessors, (432), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2022-12-13 22:15:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 547 transitions. [2022-12-13 22:15:50,002 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 547 transitions. Word has length 116 [2022-12-13 22:15:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:50,003 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 547 transitions. [2022-12-13 22:15:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 22:15:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 547 transitions. [2022-12-13 22:15:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 22:15:50,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:50,006 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:50,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:15:50,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 22:15:50,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1609367707, now seen corresponding path program 1 times [2022-12-13 22:15:50,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:50,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437466736] [2022-12-13 22:15:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:50,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:15:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 22:15:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 22:15:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 22:15:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 22:15:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 22:15:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:15:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 22:15:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 22:15:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 22:15:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 22:15:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 22:15:50,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:50,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437466736] [2022-12-13 22:15:50,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437466736] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:50,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554433533] [2022-12-13 22:15:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:50,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:50,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:50,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:50,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:15:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:50,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:15:50,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 22:15:50,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:15:50,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554433533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:50,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:15:50,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-12-13 22:15:50,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070297738] [2022-12-13 22:15:50,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:50,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:15:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:15:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:15:50,665 INFO L87 Difference]: Start difference. First operand 360 states and 547 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 22:15:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:50,729 INFO L93 Difference]: Finished difference Result 709 states and 1083 transitions. [2022-12-13 22:15:50,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:15:50,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2022-12-13 22:15:50,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:50,730 INFO L225 Difference]: With dead ends: 709 [2022-12-13 22:15:50,731 INFO L226 Difference]: Without dead ends: 362 [2022-12-13 22:15:50,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 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 22:15:50,732 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 124 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1640 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 22:15:50,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1640 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:15:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-12-13 22:15:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-12-13 22:15:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 284 states have (on average 1.5246478873239437) internal successors, (433), 287 states have internal predecessors, (433), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-12-13 22:15:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 553 transitions. [2022-12-13 22:15:50,745 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 553 transitions. Word has length 117 [2022-12-13 22:15:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:50,746 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 553 transitions. [2022-12-13 22:15:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 22:15:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 553 transitions. [2022-12-13 22:15:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 22:15:50,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:50,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:50,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:15:50,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:50,948 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:50,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2099317041, now seen corresponding path program 1 times [2022-12-13 22:15:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:50,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722401585] [2022-12-13 22:15:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:50,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:15:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:15:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 22:15:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 22:15:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 22:15:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:15:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 22:15:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 22:15:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 22:15:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 22:15:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 22:15:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 22:15:51,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:51,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722401585] [2022-12-13 22:15:51,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722401585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:51,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:51,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:15:51,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135621619] [2022-12-13 22:15:51,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:51,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:15:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:51,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:15:51,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:15:51,135 INFO L87 Difference]: Start difference. First operand 362 states and 553 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 22:15:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:52,605 INFO L93 Difference]: Finished difference Result 851 states and 1298 transitions. [2022-12-13 22:15:52,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:15:52,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2022-12-13 22:15:52,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:52,609 INFO L225 Difference]: With dead ends: 851 [2022-12-13 22:15:52,609 INFO L226 Difference]: Without dead ends: 512 [2022-12-13 22:15:52,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 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 22:15:52,611 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1115 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:15:52,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 987 Invalid, 2655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 22:15:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-12-13 22:15:52,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 362. [2022-12-13 22:15:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 284 states have (on average 1.5246478873239437) internal successors, (433), 287 states have internal predecessors, (433), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2022-12-13 22:15:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 552 transitions. [2022-12-13 22:15:52,648 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 552 transitions. Word has length 118 [2022-12-13 22:15:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:52,648 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 552 transitions. [2022-12-13 22:15:52,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 22:15:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 552 transitions. [2022-12-13 22:15:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 22:15:52,651 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:52,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:52,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:15:52,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:52,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:52,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2110321279, now seen corresponding path program 2 times [2022-12-13 22:15:52,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:52,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780066117] [2022-12-13 22:15:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:52,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:15:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:15:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 22:15:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 22:15:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:15:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:15:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 22:15:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 22:15:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:15:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 22:15:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 22:15:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 22:15:52,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:52,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780066117] [2022-12-13 22:15:52,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780066117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:52,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:52,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:15:52,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907125542] [2022-12-13 22:15:52,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:52,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:15:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:52,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:15:52,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:15:52,828 INFO L87 Difference]: Start difference. First operand 362 states and 552 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 22:15:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:54,256 INFO L93 Difference]: Finished difference Result 853 states and 1301 transitions. [2022-12-13 22:15:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:15:54,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-12-13 22:15:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:54,260 INFO L225 Difference]: With dead ends: 853 [2022-12-13 22:15:54,260 INFO L226 Difference]: Without dead ends: 514 [2022-12-13 22:15:54,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 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 22:15:54,262 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1111 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:15:54,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 987 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 22:15:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-12-13 22:15:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 364. [2022-12-13 22:15:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 289 states have internal predecessors, (434), 57 states have call successors, (57), 18 states have call predecessors, (57), 21 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2022-12-13 22:15:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 555 transitions. [2022-12-13 22:15:54,286 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 555 transitions. Word has length 119 [2022-12-13 22:15:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:54,286 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 555 transitions. [2022-12-13 22:15:54,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 22:15:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 555 transitions. [2022-12-13 22:15:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 22:15:54,287 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:54,287 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:54,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:15:54,288 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1209746602, now seen corresponding path program 1 times [2022-12-13 22:15:54,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:54,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598498514] [2022-12-13 22:15:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:15:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:15:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:15:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 22:15:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 22:15:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:15:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 22:15:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 22:15:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 22:15:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 22:15:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 22:15:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 22:15:54,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:54,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598498514] [2022-12-13 22:15:54,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598498514] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:54,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:54,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 22:15:54,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329946687] [2022-12-13 22:15:54,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:54,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:15:54,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:54,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:15:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:15:54,468 INFO L87 Difference]: Start difference. First operand 364 states and 555 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 22:15:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:56,133 INFO L93 Difference]: Finished difference Result 851 states and 1296 transitions. [2022-12-13 22:15:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:15:56,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 120 [2022-12-13 22:15:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:56,137 INFO L225 Difference]: With dead ends: 851 [2022-12-13 22:15:56,137 INFO L226 Difference]: Without dead ends: 514 [2022-12-13 22:15:56,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 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 22:15:56,139 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1231 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3818 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 4241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 3818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 22:15:56,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 1289 Invalid, 4241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 3818 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 22:15:56,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-12-13 22:15:56,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 364. [2022-12-13 22:15:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 289 states have internal predecessors, (434), 57 states have call successors, (57), 18 states have call predecessors, (57), 21 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-12-13 22:15:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 554 transitions. [2022-12-13 22:15:56,178 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 554 transitions. Word has length 120 [2022-12-13 22:15:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:56,178 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 554 transitions. [2022-12-13 22:15:56,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 22:15:56,178 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 554 transitions. [2022-12-13 22:15:56,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 22:15:56,179 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:56,179 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:56,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:15:56,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2053654144, now seen corresponding path program 2 times [2022-12-13 22:15:56,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:56,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810438983] [2022-12-13 22:15:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:56,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:15:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:15:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:15:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 22:15:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:15:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 22:15:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 22:15:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 22:15:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 22:15:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 22:15:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 22:15:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 22:15:56,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:56,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810438983] [2022-12-13 22:15:56,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810438983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:56,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:56,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 22:15:56,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223299791] [2022-12-13 22:15:56,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:56,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:15:56,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:56,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:15:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:15:56,336 INFO L87 Difference]: Start difference. First operand 364 states and 554 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 22:15:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:57,846 INFO L93 Difference]: Finished difference Result 853 states and 1302 transitions. [2022-12-13 22:15:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:15:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 121 [2022-12-13 22:15:57,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:57,849 INFO L225 Difference]: With dead ends: 853 [2022-12-13 22:15:57,849 INFO L226 Difference]: Without dead ends: 516 [2022-12-13 22:15:57,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 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 22:15:57,850 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1235 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3775 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 4192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 3775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:15:57,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1289 Invalid, 4192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 3775 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 22:15:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-12-13 22:15:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 366. [2022-12-13 22:15:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 286 states have (on average 1.520979020979021) internal successors, (435), 291 states have internal predecessors, (435), 57 states have call successors, (57), 18 states have call predecessors, (57), 22 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2022-12-13 22:15:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 560 transitions. [2022-12-13 22:15:57,873 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 560 transitions. Word has length 121 [2022-12-13 22:15:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:57,873 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 560 transitions. [2022-12-13 22:15:57,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 22:15:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 560 transitions. [2022-12-13 22:15:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-13 22:15:57,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:57,875 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:57,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 22:15:57,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:57,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1957721989, now seen corresponding path program 1 times [2022-12-13 22:15:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:57,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6828794] [2022-12-13 22:15:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:15:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:15:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:15:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 22:15:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 22:15:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 22:15:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 22:15:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 22:15:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 22:15:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 22:15:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 22:15:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:15:57,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:57,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6828794] [2022-12-13 22:15:57,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6828794] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:57,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926396920] [2022-12-13 22:15:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:57,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:57,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:57,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:57,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:15:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:58,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:15:58,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:15:58,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:15:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:15:58,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926396920] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:15:58,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:15:58,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-12-13 22:15:58,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444003675] [2022-12-13 22:15:58,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:15:58,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 22:15:58,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:58,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 22:15:58,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 22:15:58,249 INFO L87 Difference]: Start difference. First operand 366 states and 560 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 22:15:59,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:15:59,691 INFO L93 Difference]: Finished difference Result 1022 states and 1630 transitions. [2022-12-13 22:15:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:15:59,692 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 122 [2022-12-13 22:15:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:15:59,695 INFO L225 Difference]: With dead ends: 1022 [2022-12-13 22:15:59,695 INFO L226 Difference]: Without dead ends: 868 [2022-12-13 22:15:59,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-12-13 22:15:59,696 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1398 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:15:59,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 1384 Invalid, 3218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2679 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 22:15:59,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-12-13 22:15:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 694. [2022-12-13 22:15:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.5872727272727272) internal successors, (873), 555 states have internal predecessors, (873), 121 states have call successors, (121), 18 states have call predecessors, (121), 22 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2022-12-13 22:15:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1136 transitions. [2022-12-13 22:15:59,736 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1136 transitions. Word has length 122 [2022-12-13 22:15:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:15:59,737 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1136 transitions. [2022-12-13 22:15:59,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 22:15:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1136 transitions. [2022-12-13 22:15:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 22:15:59,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:15:59,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:59,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 22:15:59,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 22:15:59,940 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:15:59,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:59,941 INFO L85 PathProgramCache]: Analyzing trace with hash -221417816, now seen corresponding path program 1 times [2022-12-13 22:15:59,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:59,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546826273] [2022-12-13 22:15:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:59,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:15:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:15:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:59,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:15:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:15:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:15:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 22:16:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 22:16:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 22:16:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 22:16:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 22:16:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:00,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 22:16:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:00,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 22:16:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 22:16:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:00,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:00,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546826273] [2022-12-13 22:16:00,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546826273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:00,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:00,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:00,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962546249] [2022-12-13 22:16:00,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:00,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:00,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:00,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:00,023 INFO L87 Difference]: Start difference. First operand 694 states and 1136 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:01,306 INFO L93 Difference]: Finished difference Result 1803 states and 3001 transitions. [2022-12-13 22:16:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:01,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2022-12-13 22:16:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:01,311 INFO L225 Difference]: With dead ends: 1803 [2022-12-13 22:16:01,311 INFO L226 Difference]: Without dead ends: 1177 [2022-12-13 22:16:01,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:01,312 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1098 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:01,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 857 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 22:16:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-12-13 22:16:01,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1019. [2022-12-13 22:16:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 811 states have (on average 1.6004932182490752) internal successors, (1298), 816 states have internal predecessors, (1298), 185 states have call successors, (185), 18 states have call predecessors, (185), 22 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2022-12-13 22:16:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1699 transitions. [2022-12-13 22:16:01,381 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1699 transitions. Word has length 128 [2022-12-13 22:16:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:01,381 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1699 transitions. [2022-12-13 22:16:01,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1699 transitions. [2022-12-13 22:16:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 22:16:01,385 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:01,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:01,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 22:16:01,385 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:01,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:01,385 INFO L85 PathProgramCache]: Analyzing trace with hash -928584161, now seen corresponding path program 1 times [2022-12-13 22:16:01,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:01,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515681703] [2022-12-13 22:16:01,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:01,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 22:16:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 22:16:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 22:16:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 22:16:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 22:16:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 22:16:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 22:16:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 22:16:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:01,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:01,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515681703] [2022-12-13 22:16:01,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515681703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:01,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:01,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:01,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026587889] [2022-12-13 22:16:01,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:01,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:01,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:01,464 INFO L87 Difference]: Start difference. First operand 1019 states and 1699 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:02,546 INFO L93 Difference]: Finished difference Result 2583 states and 4350 transitions. [2022-12-13 22:16:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:02,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2022-12-13 22:16:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:02,552 INFO L225 Difference]: With dead ends: 2583 [2022-12-13 22:16:02,552 INFO L226 Difference]: Without dead ends: 1685 [2022-12-13 22:16:02,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:02,554 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1104 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:02,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 827 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 22:16:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2022-12-13 22:16:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1527. [2022-12-13 22:16:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1224 states have (on average 1.6086601307189543) internal successors, (1969), 1229 states have internal predecessors, (1969), 280 states have call successors, (280), 18 states have call predecessors, (280), 22 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2022-12-13 22:16:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2560 transitions. [2022-12-13 22:16:02,647 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2560 transitions. Word has length 129 [2022-12-13 22:16:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:02,648 INFO L495 AbstractCegarLoop]: Abstraction has 1527 states and 2560 transitions. [2022-12-13 22:16:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2560 transitions. [2022-12-13 22:16:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 22:16:02,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:02,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:02,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 22:16:02,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:02,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1352544666, now seen corresponding path program 1 times [2022-12-13 22:16:02,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:02,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186720121] [2022-12-13 22:16:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:02,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 22:16:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 22:16:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 22:16:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 22:16:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 22:16:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 22:16:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 22:16:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 22:16:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:02,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:02,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186720121] [2022-12-13 22:16:02,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186720121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:02,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:02,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:02,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796646609] [2022-12-13 22:16:02,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:02,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:02,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:02,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:02,736 INFO L87 Difference]: Start difference. First operand 1527 states and 2560 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:03,748 INFO L93 Difference]: Finished difference Result 3735 states and 6359 transitions. [2022-12-13 22:16:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:03,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-12-13 22:16:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:03,760 INFO L225 Difference]: With dead ends: 3735 [2022-12-13 22:16:03,760 INFO L226 Difference]: Without dead ends: 2454 [2022-12-13 22:16:03,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:03,769 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1085 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:03,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 826 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 22:16:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2022-12-13 22:16:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2296. [2022-12-13 22:16:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 1870 states have (on average 1.6149732620320856) internal successors, (3020), 1875 states have internal predecessors, (3020), 403 states have call successors, (403), 18 states have call predecessors, (403), 22 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2022-12-13 22:16:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3873 transitions. [2022-12-13 22:16:03,919 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3873 transitions. Word has length 130 [2022-12-13 22:16:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:03,919 INFO L495 AbstractCegarLoop]: Abstraction has 2296 states and 3873 transitions. [2022-12-13 22:16:03,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3873 transitions. [2022-12-13 22:16:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 22:16:03,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:03,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:03,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 22:16:03,926 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:03,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1387209282, now seen corresponding path program 1 times [2022-12-13 22:16:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:03,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641233603] [2022-12-13 22:16:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:03,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:03,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:03,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:03,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:16:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:03,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 22:16:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:04,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 22:16:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 22:16:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:04,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 22:16:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 22:16:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:04,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 22:16:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 22:16:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:04,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:04,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641233603] [2022-12-13 22:16:04,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641233603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:04,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:04,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:04,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465885481] [2022-12-13 22:16:04,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:04,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:04,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:04,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:04,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:04,011 INFO L87 Difference]: Start difference. First operand 2296 states and 3873 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:05,298 INFO L93 Difference]: Finished difference Result 5529 states and 9493 transitions. [2022-12-13 22:16:05,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:05,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2022-12-13 22:16:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:05,315 INFO L225 Difference]: With dead ends: 5529 [2022-12-13 22:16:05,315 INFO L226 Difference]: Without dead ends: 3683 [2022-12-13 22:16:05,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:05,321 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1094 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:05,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 826 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 22:16:05,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2022-12-13 22:16:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3525. [2022-12-13 22:16:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 2920 states have (on average 1.6188356164383562) internal successors, (4727), 2925 states have internal predecessors, (4727), 582 states have call successors, (582), 18 states have call predecessors, (582), 22 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2022-12-13 22:16:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5964 transitions. [2022-12-13 22:16:05,573 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5964 transitions. Word has length 131 [2022-12-13 22:16:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:05,573 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5964 transitions. [2022-12-13 22:16:05,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:05,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5964 transitions. [2022-12-13 22:16:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 22:16:05,581 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:05,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:05,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 22:16:05,581 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:05,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash 913454026, now seen corresponding path program 1 times [2022-12-13 22:16:05,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:05,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976794981] [2022-12-13 22:16:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 22:16:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 22:16:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 22:16:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:16:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 22:16:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 22:16:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 22:16:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 22:16:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:05,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976794981] [2022-12-13 22:16:05,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976794981] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:05,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:05,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:05,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193226575] [2022-12-13 22:16:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:05,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:05,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:05,669 INFO L87 Difference]: Start difference. First operand 3525 states and 5964 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:06,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:06,928 INFO L93 Difference]: Finished difference Result 8477 states and 14640 transitions. [2022-12-13 22:16:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:06,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2022-12-13 22:16:06,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:06,943 INFO L225 Difference]: With dead ends: 8477 [2022-12-13 22:16:06,944 INFO L226 Difference]: Without dead ends: 5714 [2022-12-13 22:16:06,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:06,948 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1083 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:06,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 854 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 22:16:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5714 states. [2022-12-13 22:16:07,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5556. [2022-12-13 22:16:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 4575 states have (on average 1.6128961748633879) internal successors, (7379), 4580 states have internal predecessors, (7379), 958 states have call successors, (958), 18 states have call predecessors, (958), 22 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2022-12-13 22:16:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 9412 transitions. [2022-12-13 22:16:07,272 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 9412 transitions. Word has length 132 [2022-12-13 22:16:07,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:07,272 INFO L495 AbstractCegarLoop]: Abstraction has 5556 states and 9412 transitions. [2022-12-13 22:16:07,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:07,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 9412 transitions. [2022-12-13 22:16:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-13 22:16:07,286 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:07,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:07,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 22:16:07,286 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:07,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:07,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2099398746, now seen corresponding path program 1 times [2022-12-13 22:16:07,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:07,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819825298] [2022-12-13 22:16:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:07,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 22:16:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:16:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 22:16:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 22:16:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 22:16:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 22:16:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 22:16:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 22:16:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:07,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:07,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819825298] [2022-12-13 22:16:07,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819825298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:07,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:07,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:07,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407071790] [2022-12-13 22:16:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:07,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:07,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:07,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:07,361 INFO L87 Difference]: Start difference. First operand 5556 states and 9412 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:08,711 INFO L93 Difference]: Finished difference Result 13814 states and 23861 transitions. [2022-12-13 22:16:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2022-12-13 22:16:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:08,745 INFO L225 Difference]: With dead ends: 13814 [2022-12-13 22:16:08,745 INFO L226 Difference]: Without dead ends: 9397 [2022-12-13 22:16:08,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:08,755 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1085 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:08,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 833 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 22:16:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2022-12-13 22:16:09,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 9239. [2022-12-13 22:16:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9239 states, 7652 states have (on average 1.6106900156821746) internal successors, (12325), 7657 states have internal predecessors, (12325), 1564 states have call successors, (1564), 18 states have call predecessors, (1564), 22 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2022-12-13 22:16:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 15648 transitions. [2022-12-13 22:16:09,326 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 15648 transitions. Word has length 133 [2022-12-13 22:16:09,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:09,327 INFO L495 AbstractCegarLoop]: Abstraction has 9239 states and 15648 transitions. [2022-12-13 22:16:09,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:09,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 15648 transitions. [2022-12-13 22:16:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 22:16:09,339 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:09,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:09,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 22:16:09,340 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:09,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1620420932, now seen corresponding path program 1 times [2022-12-13 22:16:09,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:09,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980492062] [2022-12-13 22:16:09,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:09,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 22:16:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 22:16:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 22:16:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 22:16:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 22:16:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 22:16:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 22:16:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 22:16:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:09,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980492062] [2022-12-13 22:16:09,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980492062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:09,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:09,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:09,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229958638] [2022-12-13 22:16:09,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:09,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:09,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:09,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:09,416 INFO L87 Difference]: Start difference. First operand 9239 states and 15648 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:11,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:11,514 INFO L93 Difference]: Finished difference Result 23998 states and 41407 transitions. [2022-12-13 22:16:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:11,515 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-12-13 22:16:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:11,553 INFO L225 Difference]: With dead ends: 23998 [2022-12-13 22:16:11,553 INFO L226 Difference]: Without dead ends: 16350 [2022-12-13 22:16:11,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:11,567 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1088 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:11,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 854 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 22:16:11,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16350 states. [2022-12-13 22:16:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16350 to 16192. [2022-12-13 22:16:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16192 states, 13402 states have (on average 1.601775854350097) internal successors, (21467), 13407 states have internal predecessors, (21467), 2767 states have call successors, (2767), 18 states have call predecessors, (2767), 22 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2022-12-13 22:16:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16192 states to 16192 states and 27340 transitions. [2022-12-13 22:16:12,611 INFO L78 Accepts]: Start accepts. Automaton has 16192 states and 27340 transitions. Word has length 134 [2022-12-13 22:16:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:12,611 INFO L495 AbstractCegarLoop]: Abstraction has 16192 states and 27340 transitions. [2022-12-13 22:16:12,611 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 16192 states and 27340 transitions. [2022-12-13 22:16:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 22:16:12,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:12,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:12,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 22:16:12,629 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:12,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash -71748903, now seen corresponding path program 1 times [2022-12-13 22:16:12,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:12,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25916443] [2022-12-13 22:16:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:12,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 22:16:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:16:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 22:16:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 22:16:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 22:16:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 22:16:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 22:16:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 22:16:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:12,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25916443] [2022-12-13 22:16:12,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25916443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:12,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:12,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:12,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617484971] [2022-12-13 22:16:12,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:12,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:12,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:12,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:12,703 INFO L87 Difference]: Start difference. First operand 16192 states and 27340 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:15,453 INFO L93 Difference]: Finished difference Result 42964 states and 74006 transitions. [2022-12-13 22:16:15,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:15,454 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-12-13 22:16:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:15,522 INFO L225 Difference]: With dead ends: 42964 [2022-12-13 22:16:15,522 INFO L226 Difference]: Without dead ends: 29005 [2022-12-13 22:16:15,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:15,546 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1085 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:15,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 829 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 22:16:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29005 states. [2022-12-13 22:16:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29005 to 28847. [2022-12-13 22:16:17,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28847 states, 24018 states have (on average 1.5975934715629945) internal successors, (38371), 24023 states have internal predecessors, (38371), 4806 states have call successors, (4806), 18 states have call predecessors, (4806), 22 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2022-12-13 22:16:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28847 states to 28847 states and 48596 transitions. [2022-12-13 22:16:17,375 INFO L78 Accepts]: Start accepts. Automaton has 28847 states and 48596 transitions. Word has length 135 [2022-12-13 22:16:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:17,375 INFO L495 AbstractCegarLoop]: Abstraction has 28847 states and 48596 transitions. [2022-12-13 22:16:17,375 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 28847 states and 48596 transitions. [2022-12-13 22:16:17,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-12-13 22:16:17,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:17,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:17,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 22:16:17,407 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:17,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1737476538, now seen corresponding path program 1 times [2022-12-13 22:16:17,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:17,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418860284] [2022-12-13 22:16:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:17,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 22:16:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 22:16:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 22:16:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 22:16:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 22:16:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 22:16:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 22:16:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 22:16:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:17,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:17,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418860284] [2022-12-13 22:16:17,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418860284] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:17,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:17,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:17,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545647924] [2022-12-13 22:16:17,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:17,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:17,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:17,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:17,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:17,501 INFO L87 Difference]: Start difference. First operand 28847 states and 48596 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:21,742 INFO L93 Difference]: Finished difference Result 78726 states and 134765 transitions. [2022-12-13 22:16:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:21,743 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2022-12-13 22:16:21,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:21,909 INFO L225 Difference]: With dead ends: 78726 [2022-12-13 22:16:21,909 INFO L226 Difference]: Without dead ends: 52884 [2022-12-13 22:16:21,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:21,972 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1078 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:21,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 843 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 22:16:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52884 states. [2022-12-13 22:16:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52884 to 52726. [2022-12-13 22:16:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52726 states, 44182 states have (on average 1.5920510615182653) internal successors, (70340), 44187 states have internal predecessors, (70340), 8521 states have call successors, (8521), 18 states have call predecessors, (8521), 22 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2022-12-13 22:16:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52726 states to 52726 states and 88527 transitions. [2022-12-13 22:16:25,285 INFO L78 Accepts]: Start accepts. Automaton has 52726 states and 88527 transitions. Word has length 136 [2022-12-13 22:16:25,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:25,285 INFO L495 AbstractCegarLoop]: Abstraction has 52726 states and 88527 transitions. [2022-12-13 22:16:25,285 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 52726 states and 88527 transitions. [2022-12-13 22:16:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 22:16:25,312 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:25,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:25,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 22:16:25,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1452520601, now seen corresponding path program 1 times [2022-12-13 22:16:25,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:25,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485348806] [2022-12-13 22:16:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:25,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 22:16:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 22:16:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 22:16:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 22:16:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 22:16:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 22:16:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 22:16:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 22:16:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:25,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:25,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485348806] [2022-12-13 22:16:25,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485348806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:25,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:25,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:16:25,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133682293] [2022-12-13 22:16:25,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:25,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:16:25,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:25,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:16:25,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:16:25,381 INFO L87 Difference]: Start difference. First operand 52726 states and 88527 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:31,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:31,881 INFO L93 Difference]: Finished difference Result 98497 states and 168952 transitions. [2022-12-13 22:16:31,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:16:31,882 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2022-12-13 22:16:31,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:32,157 INFO L225 Difference]: With dead ends: 98497 [2022-12-13 22:16:32,158 INFO L226 Difference]: Without dead ends: 98343 [2022-12-13 22:16:32,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 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 22:16:32,189 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1081 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:32,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 832 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 22:16:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98343 states. [2022-12-13 22:16:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98343 to 98185. [2022-12-13 22:16:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98185 states, 82842 states have (on average 1.5850655464619396) internal successors, (131310), 82847 states have internal predecessors, (131310), 15320 states have call successors, (15320), 18 states have call predecessors, (15320), 22 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2022-12-13 22:16:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98185 states to 98185 states and 164141 transitions. [2022-12-13 22:16:38,305 INFO L78 Accepts]: Start accepts. Automaton has 98185 states and 164141 transitions. Word has length 137 [2022-12-13 22:16:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:38,305 INFO L495 AbstractCegarLoop]: Abstraction has 98185 states and 164141 transitions. [2022-12-13 22:16:38,306 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 98185 states and 164141 transitions. [2022-12-13 22:16:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 22:16:38,342 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:38,342 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:38,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 22:16:38,342 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:38,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:38,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1217673285, now seen corresponding path program 1 times [2022-12-13 22:16:38,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:38,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643779359] [2022-12-13 22:16:38,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:38,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:16:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:16:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:16:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 22:16:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 22:16:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 22:16:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 22:16:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 22:16:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:38,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:38,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643779359] [2022-12-13 22:16:38,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643779359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:38,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:38,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:16:38,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000079176] [2022-12-13 22:16:38,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:38,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:16:38,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:38,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:16:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:16:38,460 INFO L87 Difference]: Start difference. First operand 98185 states and 164141 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:45,048 INFO L93 Difference]: Finished difference Result 98481 states and 167841 transitions. [2022-12-13 22:16:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:16:45,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2022-12-13 22:16:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:45,343 INFO L225 Difference]: With dead ends: 98481 [2022-12-13 22:16:45,344 INFO L226 Difference]: Without dead ends: 98335 [2022-12-13 22:16:45,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-12-13 22:16:45,381 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1051 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:45,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 1117 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 22:16:45,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98335 states. [2022-12-13 22:16:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98335 to 98185. [2022-12-13 22:16:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98185 states, 82842 states have (on average 1.5850534752903116) internal successors, (131309), 82847 states have internal predecessors, (131309), 15320 states have call successors, (15320), 18 states have call predecessors, (15320), 22 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2022-12-13 22:16:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98185 states to 98185 states and 164140 transitions. [2022-12-13 22:16:51,206 INFO L78 Accepts]: Start accepts. Automaton has 98185 states and 164140 transitions. Word has length 138 [2022-12-13 22:16:51,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:16:51,207 INFO L495 AbstractCegarLoop]: Abstraction has 98185 states and 164140 transitions. [2022-12-13 22:16:51,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 22:16:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 98185 states and 164140 transitions. [2022-12-13 22:16:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 22:16:51,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:16:51,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:51,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 22:16:51,252 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:16:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:16:51,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1770088573, now seen corresponding path program 1 times [2022-12-13 22:16:51,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:16:51,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882825104] [2022-12-13 22:16:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:16:51,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:16:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:16:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:16:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:16:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:16:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:16:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:16:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:16:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:16:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:16:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 22:16:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 22:16:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 22:16:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 22:16:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 22:16:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 22:16:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:16:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:16:51,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:16:51,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882825104] [2022-12-13 22:16:51,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882825104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:16:51,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:16:51,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 22:16:51,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729998897] [2022-12-13 22:16:51,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:16:51,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 22:16:51,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:16:51,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 22:16:51,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:16:51,412 INFO L87 Difference]: Start difference. First operand 98185 states and 164140 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 22:16:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:16:59,364 INFO L93 Difference]: Finished difference Result 99021 states and 168625 transitions. [2022-12-13 22:16:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 22:16:59,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2022-12-13 22:16:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:16:59,643 INFO L225 Difference]: With dead ends: 99021 [2022-12-13 22:16:59,644 INFO L226 Difference]: Without dead ends: 98875 [2022-12-13 22:16:59,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2022-12-13 22:16:59,677 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 2113 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 1104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 4941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1104 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:16:59,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2127 Valid, 1099 Invalid, 4941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1104 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 22:16:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98875 states. [2022-12-13 22:17:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98875 to 98333. [2022-12-13 22:17:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98333 states, 82960 states have (on average 1.584811957569913) internal successors, (131476), 82965 states have internal predecessors, (131476), 15338 states have call successors, (15338), 28 states have call predecessors, (15338), 34 states have return successors, (17532), 15339 states have call predecessors, (17532), 15336 states have call successors, (17532) [2022-12-13 22:17:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98333 states to 98333 states and 164346 transitions. [2022-12-13 22:17:05,930 INFO L78 Accepts]: Start accepts. Automaton has 98333 states and 164346 transitions. Word has length 145 [2022-12-13 22:17:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:17:05,930 INFO L495 AbstractCegarLoop]: Abstraction has 98333 states and 164346 transitions. [2022-12-13 22:17:05,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 22:17:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 98333 states and 164346 transitions. [2022-12-13 22:17:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 22:17:05,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:17:05,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:05,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 22:17:05,979 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:17:05,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:17:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1606633112, now seen corresponding path program 1 times [2022-12-13 22:17:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:17:05,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716495879] [2022-12-13 22:17:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:17:05,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:17:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:17:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:17:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:17:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:17:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:17:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:17:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:17:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:17:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:17:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 22:17:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 22:17:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 22:17:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 22:17:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:17:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 22:17:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:17:06,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:17:06,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716495879] [2022-12-13 22:17:06,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716495879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:17:06,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:17:06,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-13 22:17:06,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348601482] [2022-12-13 22:17:06,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:17:06,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 22:17:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:17:06,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 22:17:06,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-12-13 22:17:06,273 INFO L87 Difference]: Start difference. First operand 98333 states and 164346 transitions. Second operand has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-13 22:17:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:17:15,546 INFO L93 Difference]: Finished difference Result 99263 states and 168960 transitions. [2022-12-13 22:17:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 22:17:15,547 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 146 [2022-12-13 22:17:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:17:15,850 INFO L225 Difference]: With dead ends: 99263 [2022-12-13 22:17:15,851 INFO L226 Difference]: Without dead ends: 98713 [2022-12-13 22:17:15,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 22:17:15,884 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1855 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 7301 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 8204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 7301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:17:15,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 2291 Invalid, 8204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 7301 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 22:17:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98713 states. [2022-12-13 22:17:21,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98713 to 98388. [2022-12-13 22:17:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98388 states, 83002 states have (on average 1.5847088021975375) internal successors, (131534), 83010 states have internal predecessors, (131534), 15349 states have call successors, (15349), 29 states have call predecessors, (15349), 36 states have return successors, (17545), 15348 states have call predecessors, (17545), 15347 states have call successors, (17545) [2022-12-13 22:17:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98388 states to 98388 states and 164428 transitions. [2022-12-13 22:17:22,058 INFO L78 Accepts]: Start accepts. Automaton has 98388 states and 164428 transitions. Word has length 146 [2022-12-13 22:17:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:17:22,058 INFO L495 AbstractCegarLoop]: Abstraction has 98388 states and 164428 transitions. [2022-12-13 22:17:22,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-13 22:17:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 98388 states and 164428 transitions. [2022-12-13 22:17:22,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-12-13 22:17:22,157 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:17:22,157 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, 1, 1, 1, 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 22:17:22,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 22:17:22,157 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:17:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:17:22,158 INFO L85 PathProgramCache]: Analyzing trace with hash -5833469, now seen corresponding path program 1 times [2022-12-13 22:17:22,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:17:22,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863833650] [2022-12-13 22:17:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:17:22,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:17:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:17:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:17:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:17:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:17:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:17:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:17:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:17:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:17:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:17:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 22:17:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 22:17:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 22:17:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 22:17:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 22:17:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 22:17:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 22:17:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 22:17:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 22:17:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 22:17:22,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:17:22,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863833650] [2022-12-13 22:17:22,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863833650] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:17:22,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:17:22,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 22:17:22,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3956967] [2022-12-13 22:17:22,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:17:22,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 22:17:22,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:17:22,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 22:17:22,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:17:22,330 INFO L87 Difference]: Start difference. First operand 98388 states and 164428 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 22:17:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:17:30,725 INFO L93 Difference]: Finished difference Result 100029 states and 170103 transitions. [2022-12-13 22:17:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 22:17:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 170 [2022-12-13 22:17:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:17:30,992 INFO L225 Difference]: With dead ends: 100029 [2022-12-13 22:17:30,993 INFO L226 Difference]: Without dead ends: 99707 [2022-12-13 22:17:31,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2022-12-13 22:17:31,018 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1725 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 4648 mSolverCounterSat, 1127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 5775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1127 IncrementalHoareTripleChecker+Valid, 4648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:17:31,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 1146 Invalid, 5775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1127 Valid, 4648 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 22:17:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99707 states. [2022-12-13 22:17:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99707 to 98735. [2022-12-13 22:17:37,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98735 states, 83275 states have (on average 1.5840888622035425) internal successors, (131915), 83287 states have internal predecessors, (131915), 15396 states have call successors, (15396), 49 states have call predecessors, (15396), 63 states have return successors, (17603), 15398 states have call predecessors, (17603), 15392 states have call successors, (17603) [2022-12-13 22:17:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98735 states to 98735 states and 164914 transitions. [2022-12-13 22:17:37,782 INFO L78 Accepts]: Start accepts. Automaton has 98735 states and 164914 transitions. Word has length 170 [2022-12-13 22:17:37,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:17:37,783 INFO L495 AbstractCegarLoop]: Abstraction has 98735 states and 164914 transitions. [2022-12-13 22:17:37,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 22:17:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 98735 states and 164914 transitions. [2022-12-13 22:17:37,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-13 22:17:37,883 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:17:37,883 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, 1, 1, 1, 1, 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 22:17:37,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 22:17:37,884 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:17:37,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:17:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1417666847, now seen corresponding path program 1 times [2022-12-13 22:17:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:17:37,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673033209] [2022-12-13 22:17:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:17:37,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:17:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:17:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:17:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:17:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:17:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:17:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:17:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:17:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:17:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:17:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 22:17:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 22:17:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 22:17:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 22:17:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 22:17:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 22:17:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 22:17:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 22:17:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 22:17:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 22:17:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:17:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673033209] [2022-12-13 22:17:38,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673033209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:17:38,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:17:38,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-13 22:17:38,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363055719] [2022-12-13 22:17:38,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:17:38,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:17:38,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:17:38,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:17:38,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:17:38,131 INFO L87 Difference]: Start difference. First operand 98735 states and 164914 transitions. Second operand has 16 states, 15 states have (on average 7.533333333333333) internal successors, (113), 11 states have internal predecessors, (113), 7 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-13 22:17:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:17:46,066 INFO L93 Difference]: Finished difference Result 99727 states and 169638 transitions. [2022-12-13 22:17:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 22:17:46,067 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.533333333333333) internal successors, (113), 11 states have internal predecessors, (113), 7 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 171 [2022-12-13 22:17:46,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:17:46,338 INFO L225 Difference]: With dead ends: 99727 [2022-12-13 22:17:46,338 INFO L226 Difference]: Without dead ends: 99073 [2022-12-13 22:17:46,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=375, Invalid=1605, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 22:17:46,368 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1648 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 5299 mSolverCounterSat, 742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 6041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 5299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:17:46,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 2144 Invalid, 6041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 5299 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 22:17:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99073 states. [2022-12-13 22:17:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99073 to 98595. [2022-12-13 22:17:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98595 states, 83164 states have (on average 1.5843514020489635) internal successors, (131761), 83178 states have internal predecessors, (131761), 15375 states have call successors, (15375), 42 states have call predecessors, (15375), 55 states have return successors, (17580), 15374 states have call predecessors, (17580), 15372 states have call successors, (17580) [2022-12-13 22:17:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98595 states to 98595 states and 164716 transitions. [2022-12-13 22:17:52,904 INFO L78 Accepts]: Start accepts. Automaton has 98595 states and 164716 transitions. Word has length 171 [2022-12-13 22:17:52,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:17:52,904 INFO L495 AbstractCegarLoop]: Abstraction has 98595 states and 164716 transitions. [2022-12-13 22:17:52,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.533333333333333) internal successors, (113), 11 states have internal predecessors, (113), 7 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-13 22:17:52,905 INFO L276 IsEmpty]: Start isEmpty. Operand 98595 states and 164716 transitions. [2022-12-13 22:17:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 22:17:53,013 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:17:53,013 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, 1, 1, 1, 1, 1, 1, 1, 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 22:17:53,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 22:17:53,013 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:17:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:17:53,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1611493383, now seen corresponding path program 1 times [2022-12-13 22:17:53,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:17:53,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751601304] [2022-12-13 22:17:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:17:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:17:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:17:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:17:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:17:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:17:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:17:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:17:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:17:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:17:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 22:17:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 22:17:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 22:17:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 22:17:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 22:17:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 22:17:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 22:17:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 22:17:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 22:17:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 22:17:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 22:17:53,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:17:53,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751601304] [2022-12-13 22:17:53,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751601304] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:17:53,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122203104] [2022-12-13 22:17:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:17:53,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:17:53,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:17:53,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:17:53,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:17:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 22:17:53,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:17:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 22:17:53,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:17:53,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122203104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:17:53,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:17:53,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 31 [2022-12-13 22:17:53,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982719320] [2022-12-13 22:17:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:17:53,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 22:17:53,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:17:53,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 22:17:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2022-12-13 22:17:53,798 INFO L87 Difference]: Start difference. First operand 98595 states and 164716 transitions. Second operand has 13 states, 12 states have (on average 10.833333333333334) internal successors, (130), 11 states have internal predecessors, (130), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-13 22:18:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:18:00,798 INFO L93 Difference]: Finished difference Result 99935 states and 166622 transitions. [2022-12-13 22:18:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 22:18:00,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 10.833333333333334) internal successors, (130), 11 states have internal predecessors, (130), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 174 [2022-12-13 22:18:00,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:18:01,064 INFO L225 Difference]: With dead ends: 99935 [2022-12-13 22:18:01,064 INFO L226 Difference]: Without dead ends: 99533 [2022-12-13 22:18:01,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 22:18:01,093 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 877 mSDsluCounter, 4772 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 5295 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:18:01,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 5295 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 22:18:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99533 states. [2022-12-13 22:18:07,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99533 to 99332. [2022-12-13 22:18:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99332 states, 83731 states have (on average 1.5827949027242) internal successors, (132529), 83763 states have internal predecessors, (132529), 15491 states have call successors, (15491), 75 states have call predecessors, (15491), 109 states have return successors, (17750), 15493 states have call predecessors, (17750), 15485 states have call successors, (17750) [2022-12-13 22:18:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99332 states to 99332 states and 165770 transitions. [2022-12-13 22:18:08,360 INFO L78 Accepts]: Start accepts. Automaton has 99332 states and 165770 transitions. Word has length 174 [2022-12-13 22:18:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:18:08,360 INFO L495 AbstractCegarLoop]: Abstraction has 99332 states and 165770 transitions. [2022-12-13 22:18:08,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 10.833333333333334) internal successors, (130), 11 states have internal predecessors, (130), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-13 22:18:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 99332 states and 165770 transitions. [2022-12-13 22:18:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 22:18:08,473 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:18:08,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:18:08,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 22:18:08,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 22:18:08,676 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:18:08,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:18:08,677 INFO L85 PathProgramCache]: Analyzing trace with hash -534120444, now seen corresponding path program 1 times [2022-12-13 22:18:08,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:18:08,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536927153] [2022-12-13 22:18:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:18:08,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:18:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:18:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:18:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:18:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:18:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:18:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:18:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:18:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:18:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 22:18:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 22:18:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 22:18:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 22:18:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 22:18:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 22:18:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 22:18:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 22:18:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 22:18:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 22:18:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 22:18:08,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:18:08,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536927153] [2022-12-13 22:18:08,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536927153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:18:08,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:18:08,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:18:08,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934390060] [2022-12-13 22:18:08,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:18:08,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:18:08,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:18:08,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:18:08,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:18:08,795 INFO L87 Difference]: Start difference. First operand 99332 states and 165770 transitions. Second operand has 9 states, 8 states have (on average 14.625) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 22:18:16,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:18:16,710 INFO L93 Difference]: Finished difference Result 100606 states and 170906 transitions. [2022-12-13 22:18:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 22:18:16,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.625) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 175 [2022-12-13 22:18:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:18:16,983 INFO L225 Difference]: With dead ends: 100606 [2022-12-13 22:18:16,983 INFO L226 Difference]: Without dead ends: 100036 [2022-12-13 22:18:17,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2022-12-13 22:18:17,014 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 977 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:18:17,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1115 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 22:18:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100036 states. [2022-12-13 22:18:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100036 to 99057. [2022-12-13 22:18:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99057 states, 83516 states have (on average 1.5834690358733656) internal successors, (132245), 83539 states have internal predecessors, (132245), 15442 states have call successors, (15442), 72 states have call predecessors, (15442), 98 states have return successors, (17672), 15445 states have call predecessors, (17672), 15436 states have call successors, (17672) [2022-12-13 22:18:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99057 states to 99057 states and 165359 transitions. [2022-12-13 22:18:24,887 INFO L78 Accepts]: Start accepts. Automaton has 99057 states and 165359 transitions. Word has length 175 [2022-12-13 22:18:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:18:24,887 INFO L495 AbstractCegarLoop]: Abstraction has 99057 states and 165359 transitions. [2022-12-13 22:18:24,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.625) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 22:18:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 99057 states and 165359 transitions. [2022-12-13 22:18:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 22:18:25,033 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:18:25,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:18:25,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 22:18:25,033 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:18:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:18:25,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1135375607, now seen corresponding path program 1 times [2022-12-13 22:18:25,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:18:25,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983410165] [2022-12-13 22:18:25,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:18:25,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:18:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:18:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:18:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:18:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:18:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:18:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:18:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:18:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:18:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 22:18:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 22:18:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 22:18:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 22:18:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 22:18:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 22:18:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 22:18:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 22:18:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 22:18:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 22:18:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,342 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 22:18:25,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:18:25,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983410165] [2022-12-13 22:18:25,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983410165] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:18:25,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46677325] [2022-12-13 22:18:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:18:25,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:18:25,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:18:25,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:18:25,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 22:18:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:25,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 22:18:25,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:18:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 22:18:25,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:18:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:18:26,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46677325] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:18:26,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:18:26,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 39 [2022-12-13 22:18:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505809950] [2022-12-13 22:18:26,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:18:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 22:18:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:18:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 22:18:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1388, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 22:18:26,100 INFO L87 Difference]: Start difference. First operand 99057 states and 165359 transitions. Second operand has 39 states, 38 states have (on average 8.131578947368421) internal successors, (309), 31 states have internal predecessors, (309), 10 states have call successors, (55), 13 states have call predecessors, (55), 13 states have return successors, (49), 13 states have call predecessors, (49), 10 states have call successors, (49) [2022-12-13 22:19:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:19:12,111 INFO L93 Difference]: Finished difference Result 208758 states and 357932 transitions. [2022-12-13 22:19:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-12-13 22:19:12,112 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 8.131578947368421) internal successors, (309), 31 states have internal predecessors, (309), 10 states have call successors, (55), 13 states have call predecessors, (55), 13 states have return successors, (49), 13 states have call predecessors, (49), 10 states have call successors, (49) Word has length 175 [2022-12-13 22:19:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:19:12,782 INFO L225 Difference]: With dead ends: 208758 [2022-12-13 22:19:12,782 INFO L226 Difference]: Without dead ends: 207796 [2022-12-13 22:19:12,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19377 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=6423, Invalid=47633, Unknown=0, NotChecked=0, Total=54056 [2022-12-13 22:19:12,857 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 12442 mSDsluCounter, 4152 mSDsCounter, 0 mSdLazyCounter, 43376 mSolverCounterSat, 12095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12445 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 55471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12095 IncrementalHoareTripleChecker+Valid, 43376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:19:12,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12445 Valid, 4310 Invalid, 55471 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12095 Valid, 43376 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2022-12-13 22:19:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207796 states. [2022-12-13 22:19:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207796 to 199137. [2022-12-13 22:19:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199137 states, 167837 states have (on average 1.5825175616818699) internal successors, (265605), 167902 states have internal predecessors, (265605), 31016 states have call successors, (31016), 198 states have call predecessors, (31016), 283 states have return successors, (37718), 31036 states have call predecessors, (37718), 30998 states have call successors, (37718) [2022-12-13 22:19:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199137 states to 199137 states and 334339 transitions. [2022-12-13 22:19:30,744 INFO L78 Accepts]: Start accepts. Automaton has 199137 states and 334339 transitions. Word has length 175 [2022-12-13 22:19:30,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:19:30,744 INFO L495 AbstractCegarLoop]: Abstraction has 199137 states and 334339 transitions. [2022-12-13 22:19:30,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 8.131578947368421) internal successors, (309), 31 states have internal predecessors, (309), 10 states have call successors, (55), 13 states have call predecessors, (55), 13 states have return successors, (49), 13 states have call predecessors, (49), 10 states have call successors, (49) [2022-12-13 22:19:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 199137 states and 334339 transitions. [2022-12-13 22:19:31,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 22:19:31,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:19:31,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:19:31,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 22:19:31,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 22:19:31,358 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:19:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:19:31,359 INFO L85 PathProgramCache]: Analyzing trace with hash -399222352, now seen corresponding path program 1 times [2022-12-13 22:19:31,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:19:31,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157723510] [2022-12-13 22:19:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:19:31,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:19:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:19:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:19:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:19:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:19:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:19:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:19:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:19:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:19:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 22:19:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 22:19:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 22:19:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 22:19:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 22:19:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 22:19:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 22:19:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 22:19:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 22:19:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 22:19:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 22:19:31,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:19:31,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157723510] [2022-12-13 22:19:31,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157723510] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:19:31,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785428775] [2022-12-13 22:19:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:19:31,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:19:31,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:19:31,970 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:19:31,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 22:19:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:32,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 22:19:32,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:19:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 22:19:32,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:19:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 22:19:33,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785428775] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:19:33,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:19:33,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 17, 18] total 57 [2022-12-13 22:19:33,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450665883] [2022-12-13 22:19:33,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:19:33,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-13 22:19:33,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:19:33,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-13 22:19:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2993, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 22:19:33,208 INFO L87 Difference]: Start difference. First operand 199137 states and 334339 transitions. Second operand has 57 states, 48 states have (on average 6.708333333333333) internal successors, (322), 49 states have internal predecessors, (322), 17 states have call successors, (56), 13 states have call predecessors, (56), 20 states have return successors, (50), 12 states have call predecessors, (50), 17 states have call successors, (50) [2022-12-13 22:21:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:21:13,602 INFO L93 Difference]: Finished difference Result 809387 states and 1405782 transitions. [2022-12-13 22:21:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-12-13 22:21:13,603 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 48 states have (on average 6.708333333333333) internal successors, (322), 49 states have internal predecessors, (322), 17 states have call successors, (56), 13 states have call predecessors, (56), 20 states have return successors, (50), 12 states have call predecessors, (50), 17 states have call successors, (50) Word has length 176 [2022-12-13 22:21:13,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:21:16,738 INFO L225 Difference]: With dead ends: 809387 [2022-12-13 22:21:16,738 INFO L226 Difference]: Without dead ends: 807164 [2022-12-13 22:21:17,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5413 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2778, Invalid=17528, Unknown=0, NotChecked=0, Total=20306 [2022-12-13 22:21:17,019 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 7352 mSDsluCounter, 5520 mSDsCounter, 0 mSdLazyCounter, 38447 mSolverCounterSat, 4626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7367 SdHoareTripleChecker+Valid, 5701 SdHoareTripleChecker+Invalid, 43073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4626 IncrementalHoareTripleChecker+Valid, 38447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-12-13 22:21:17,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7367 Valid, 5701 Invalid, 43073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4626 Valid, 38447 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-12-13 22:21:17,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807164 states. [2022-12-13 22:22:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807164 to 598613. [2022-12-13 22:22:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598613 states, 504382 states have (on average 1.5820746973524036) internal successors, (797970), 504507 states have internal predecessors, (797970), 93065 states have call successors, (93065), 772 states have call predecessors, (93065), 1165 states have return successors, (135282), 93333 states have call predecessors, (135282), 92993 states have call successors, (135282) [2022-12-13 22:22:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598613 states to 598613 states and 1026317 transitions. [2022-12-13 22:22:33,517 INFO L78 Accepts]: Start accepts. Automaton has 598613 states and 1026317 transitions. Word has length 176 [2022-12-13 22:22:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:22:33,517 INFO L495 AbstractCegarLoop]: Abstraction has 598613 states and 1026317 transitions. [2022-12-13 22:22:33,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 48 states have (on average 6.708333333333333) internal successors, (322), 49 states have internal predecessors, (322), 17 states have call successors, (56), 13 states have call predecessors, (56), 20 states have return successors, (50), 12 states have call predecessors, (50), 17 states have call successors, (50) [2022-12-13 22:22:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 598613 states and 1026317 transitions. [2022-12-13 22:22:34,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 22:22:34,576 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:22:34,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:34,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 22:22:34,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdf3b208-f91b-479a-9e06-594210b49e39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 22:22:34,778 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:22:34,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:22:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1073271076, now seen corresponding path program 1 times [2022-12-13 22:22:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:22:34,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741958174] [2022-12-13 22:22:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:22:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:22:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:22:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:22:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:22:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:22:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:22:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:22:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:22:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:22:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 22:22:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 22:22:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 22:22:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 22:22:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 22:22:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 22:22:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 22:22:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 22:22:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 22:22:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 22:22:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:22:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 22:22:35,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:22:35,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741958174] [2022-12-13 22:22:35,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741958174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:22:35,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:22:35,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 22:22:35,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8397513] [2022-12-13 22:22:35,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:22:35,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 22:22:35,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:22:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 22:22:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:22:35,186 INFO L87 Difference]: Start difference. First operand 598613 states and 1026317 transitions. Second operand has 15 states, 13 states have (on average 9.076923076923077) internal successors, (118), 10 states have internal predecessors, (118), 6 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 22:23:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:23:41,666 INFO L93 Difference]: Finished difference Result 617453 states and 1073286 transitions. [2022-12-13 22:23:41,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 22:23:41,668 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 9.076923076923077) internal successors, (118), 10 states have internal predecessors, (118), 6 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 176 [2022-12-13 22:23:41,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:23:43,994 INFO L225 Difference]: With dead ends: 617453 [2022-12-13 22:23:43,994 INFO L226 Difference]: Without dead ends: 605537 [2022-12-13 22:23:44,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 22:23:44,209 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1533 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 5017 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 5680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 5017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:23:44,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1996 Invalid, 5680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 5017 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 22:23:44,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605537 states. [2022-12-13 22:24:51,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605537 to 597515. [2022-12-13 22:24:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597515 states, 503555 states have (on average 1.5824269444251373) internal successors, (796839), 503660 states have internal predecessors, (796839), 92877 states have call successors, (92877), 712 states have call predecessors, (92877), 1082 states have return successors, (135010), 93142 states have call predecessors, (135010), 92811 states have call successors, (135010) [2022-12-13 22:24:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597515 states to 597515 states and 1024726 transitions. [2022-12-13 22:24:53,916 INFO L78 Accepts]: Start accepts. Automaton has 597515 states and 1024726 transitions. Word has length 176 [2022-12-13 22:24:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:24:53,916 INFO L495 AbstractCegarLoop]: Abstraction has 597515 states and 1024726 transitions. [2022-12-13 22:24:53,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 9.076923076923077) internal successors, (118), 10 states have internal predecessors, (118), 6 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 22:24:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 597515 states and 1024726 transitions. [2022-12-13 22:24:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-13 22:24:55,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:24:55,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:24:55,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 22:24:55,036 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:24:55,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:24:55,037 INFO L85 PathProgramCache]: Analyzing trace with hash -479123500, now seen corresponding path program 1 times [2022-12-13 22:24:55,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:24:55,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111836544] [2022-12-13 22:24:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:24:55,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:24:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:24:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:24:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 22:24:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:24:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:24:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:24:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 22:24:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:24:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 22:24:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 22:24:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 22:24:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 22:24:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 22:24:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 22:24:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 22:24:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 22:24:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 22:24:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 22:24:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:24:55,225 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 22:24:55,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:24:55,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111836544] [2022-12-13 22:24:55,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111836544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:24:55,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:24:55,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 22:24:55,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449434668] [2022-12-13 22:24:55,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:24:55,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:24:55,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:24:55,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:24:55,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:24:55,227 INFO L87 Difference]: Start difference. First operand 597515 states and 1024726 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 22:26:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:04,294 INFO L93 Difference]: Finished difference Result 618346 states and 1075436 transitions. [2022-12-13 22:26:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 22:26:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 177 [2022-12-13 22:26:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:06,705 INFO L225 Difference]: With dead ends: 618346 [2022-12-13 22:26:06,705 INFO L226 Difference]: Without dead ends: 608796 [2022-12-13 22:26:06,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2022-12-13 22:26:06,900 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1950 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 865 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 3930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 865 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:06,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1965 Valid, 1389 Invalid, 3930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [865 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 22:26:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608796 states.