./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN --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 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 --- 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-6b4ec56 [2022-11-20 10:30:14,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:14,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:14,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:14,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:14,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:14,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:14,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:14,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:14,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:14,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:14,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:14,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:14,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:14,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:14,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:14,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:14,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:14,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:14,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:14,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:14,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:14,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:14,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:15,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:15,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:15,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:15,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:15,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:15,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:15,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:15,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:15,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:15,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:15,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:15,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:15,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:15,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:15,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:15,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:15,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:15,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:30:15,044 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:15,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:15,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:15,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:15,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:15,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:15,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:15,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:15,047 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:15,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:15,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:30:15,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:15,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:30:15,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:15,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:15,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:15,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:15,048 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:30:15,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:15,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:15,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:15,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:15,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:15,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:15,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:15,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:15,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:15,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:15,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:15,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:15,051 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:15,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:15,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:15,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 [2022-11-20 10:30:15,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:15,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:15,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:15,303 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:15,303 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:15,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2022-11-20 10:30:18,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:18,811 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:18,812 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2022-11-20 10:30:18,835 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/data/c0f728385/4f1d543b4c194fe39a0ddfd7a9be3857/FLAG36be66167 [2022-11-20 10:30:18,849 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/data/c0f728385/4f1d543b4c194fe39a0ddfd7a9be3857 [2022-11-20 10:30:18,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:18,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:18,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:18,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:18,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:18,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:18" (1/1) ... [2022-11-20 10:30:18,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684fec4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:18, skipping insertion in model container [2022-11-20 10:30:18,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:18" (1/1) ... [2022-11-20 10:30:18,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:18,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:19,165 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_c935d201-20ed-4e10-950b-fa62615151b7/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2022-11-20 10:30:19,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:19,520 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:19,539 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_c935d201-20ed-4e10-950b-fa62615151b7/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2022-11-20 10:30:19,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:19,740 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:19,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19 WrapperNode [2022-11-20 10:30:19,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:19,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:19,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:19,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:19,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,864 INFO L138 Inliner]: procedures = 92, calls = 351, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 905 [2022-11-20 10:30:19,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:19,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:19,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:19,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:19,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,929 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:19,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:19,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:19,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:19,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (1/1) ... [2022-11-20 10:30:19,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:20,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:20,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:20,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-20 10:30:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-20 10:30:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-20 10:30:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-20 10:30:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-20 10:30:20,094 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-20 10:30:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-20 10:30:20,096 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-20 10:30:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-20 10:30:20,096 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-20 10:30:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-20 10:30:20,097 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-20 10:30:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 10:30:20,097 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 10:30:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 10:30:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 10:30:20,098 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-20 10:30:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-20 10:30:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-20 10:30:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-20 10:30:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-20 10:30:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-20 10:30:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-20 10:30:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-20 10:30:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-20 10:30:20,100 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-20 10:30:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-20 10:30:20,100 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-20 10:30:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-20 10:30:20,101 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-20 10:30:20,101 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-20 10:30:20,101 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-20 10:30:20,102 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-20 10:30:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-20 10:30:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-20 10:30:20,103 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-20 10:30:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-20 10:30:20,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-20 10:30:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-20 10:30:20,103 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-20 10:30:20,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-20 10:30:20,104 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-20 10:30:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-20 10:30:20,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-20 10:30:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-20 10:30:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-20 10:30:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-20 10:30:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-20 10:30:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-20 10:30:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-20 10:30:20,106 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-20 10:30:20,106 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-20 10:30:20,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:20,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:20,107 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-20 10:30:20,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-20 10:30:20,361 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:20,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:21,680 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:21,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:21,705 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:30:21,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:21 BoogieIcfgContainer [2022-11-20 10:30:21,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:21,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:21,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:21,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:21,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:18" (1/3) ... [2022-11-20 10:30:21,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9f0716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:21, skipping insertion in model container [2022-11-20 10:30:21,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:19" (2/3) ... [2022-11-20 10:30:21,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9f0716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:21, skipping insertion in model container [2022-11-20 10:30:21,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:21" (3/3) ... [2022-11-20 10:30:21,725 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2022-11-20 10:30:21,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:21,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:30:21,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:21,833 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;@583974ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:21,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:30:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 459 states have (on average 1.673202614379085) internal successors, (768), 479 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-20 10:30:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 10:30:21,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:21,872 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:30:21,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:21,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1321862527, now seen corresponding path program 1 times [2022-11-20 10:30:21,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:21,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489384581] [2022-11-20 10:30:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:21,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:22,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:30:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:30:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:22,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:30:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:30:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:30:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:30:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 10:30:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:30:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:30:23,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:23,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489384581] [2022-11-20 10:30:23,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489384581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:23,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:23,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:30:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292700681] [2022-11-20 10:30:23,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:23,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:30:23,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:30:23,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:30:23,234 INFO L87 Difference]: Start difference. First operand has 596 states, 459 states have (on average 1.673202614379085) internal successors, (768), 479 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:30:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:32,814 INFO L93 Difference]: Finished difference Result 1464 states and 2513 transitions. [2022-11-20 10:30:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:30:32,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-11-20 10:30:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:32,845 INFO L225 Difference]: With dead ends: 1464 [2022-11-20 10:30:32,845 INFO L226 Difference]: Without dead ends: 872 [2022-11-20 10:30:32,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:30:32,861 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1568 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 5300 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 5742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 5300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:32,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 2497 Invalid, 5742 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [442 Valid, 5300 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 10:30:32,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-20 10:30:33,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 599. [2022-11-20 10:30:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 462 states have (on average 1.6645021645021645) internal successors, (769), 482 states have internal predecessors, (769), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-11-20 10:30:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 986 transitions. [2022-11-20 10:30:33,214 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 986 transitions. Word has length 67 [2022-11-20 10:30:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:33,216 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 986 transitions. [2022-11-20 10:30:33,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:30:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 986 transitions. [2022-11-20 10:30:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 10:30:33,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:33,227 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:30:33,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:33,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:33,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1068252313, now seen corresponding path program 1 times [2022-11-20 10:30:33,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:33,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831244626] [2022-11-20 10:30:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:33,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:30:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:30:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:30:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:30:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:30:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:30:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 10:30:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:30:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:30:33,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:33,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831244626] [2022-11-20 10:30:33,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831244626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:33,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:33,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:30:33,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653379629] [2022-11-20 10:30:33,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:33,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:30:33,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:33,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:30:33,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:30:33,995 INFO L87 Difference]: Start difference. First operand 599 states and 986 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:30:43,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:43,598 INFO L93 Difference]: Finished difference Result 1458 states and 2477 transitions. [2022-11-20 10:30:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:30:43,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2022-11-20 10:30:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:43,608 INFO L225 Difference]: With dead ends: 1458 [2022-11-20 10:30:43,608 INFO L226 Difference]: Without dead ends: 875 [2022-11-20 10:30:43,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:30:43,614 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 893 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 5577 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 5790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 5577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:43,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 2445 Invalid, 5790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [213 Valid, 5577 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-20 10:30:43,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-11-20 10:30:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 599. [2022-11-20 10:30:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 462 states have (on average 1.6623376623376624) internal successors, (768), 482 states have internal predecessors, (768), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-11-20 10:30:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 985 transitions. [2022-11-20 10:30:43,736 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 985 transitions. Word has length 68 [2022-11-20 10:30:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:43,736 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 985 transitions. [2022-11-20 10:30:43,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:30:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 985 transitions. [2022-11-20 10:30:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 10:30:43,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:43,739 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:30:43,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:30:43,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -550225129, now seen corresponding path program 1 times [2022-11-20 10:30:43,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:43,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321903869] [2022-11-20 10:30:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:43,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:30:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:30:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:30:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:30:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:30:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:30:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 10:30:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:30:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:30:44,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:44,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321903869] [2022-11-20 10:30:44,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321903869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:44,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:44,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:30:44,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308493327] [2022-11-20 10:30:44,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:44,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:44,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:44,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:44,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:30:44,214 INFO L87 Difference]: Start difference. First operand 599 states and 985 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:30:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:51,038 INFO L93 Difference]: Finished difference Result 1449 states and 2457 transitions. [2022-11-20 10:30:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:51,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-20 10:30:51,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:51,050 INFO L225 Difference]: With dead ends: 1449 [2022-11-20 10:30:51,051 INFO L226 Difference]: Without dead ends: 835 [2022-11-20 10:30:51,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:51,062 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1450 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:51,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 1352 Invalid, 3211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 10:30:51,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-20 10:30:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 575. [2022-11-20 10:30:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 441 states have (on average 1.653061224489796) internal successors, (729), 459 states have internal predecessors, (729), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 10:30:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 942 transitions. [2022-11-20 10:30:51,201 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 942 transitions. Word has length 68 [2022-11-20 10:30:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:51,202 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 942 transitions. [2022-11-20 10:30:51,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:30:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 942 transitions. [2022-11-20 10:30:51,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 10:30:51,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:51,205 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:30:51,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:30:51,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:51,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1908921867, now seen corresponding path program 1 times [2022-11-20 10:30:51,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:51,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437868284] [2022-11-20 10:30:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:51,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:30:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:30:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:30:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:30:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:30:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 10:30:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 10:30:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:30:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:30:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:51,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437868284] [2022-11-20 10:30:51,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437868284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:51,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:51,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:30:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349473902] [2022-11-20 10:30:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:51,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:30:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:30:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:30:51,763 INFO L87 Difference]: Start difference. First operand 575 states and 942 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:00,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:00,142 INFO L93 Difference]: Finished difference Result 1412 states and 2388 transitions. [2022-11-20 10:31:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:31:00,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2022-11-20 10:31:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:00,150 INFO L225 Difference]: With dead ends: 1412 [2022-11-20 10:31:00,151 INFO L226 Difference]: Without dead ends: 829 [2022-11-20 10:31:00,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:31:00,156 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1496 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 5127 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 5566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 5127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:00,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 2411 Invalid, 5566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [439 Valid, 5127 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-20 10:31:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-20 10:31:00,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 569. [2022-11-20 10:31:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 435 states have (on average 1.645977011494253) internal successors, (716), 453 states have internal predecessors, (716), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 10:31:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 929 transitions. [2022-11-20 10:31:00,287 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 929 transitions. Word has length 69 [2022-11-20 10:31:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:00,288 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 929 transitions. [2022-11-20 10:31:00,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 929 transitions. [2022-11-20 10:31:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 10:31:00,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:00,290 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:31:00,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:31:00,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:00,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1120655615, now seen corresponding path program 1 times [2022-11-20 10:31:00,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:00,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701619258] [2022-11-20 10:31:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:00,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:00,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:31:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:00,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 10:31:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:31:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 10:31:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:31:00,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:00,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701619258] [2022-11-20 10:31:00,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701619258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:00,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:00,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:31:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109332906] [2022-11-20 10:31:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:00,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:31:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:31:00,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:31:00,837 INFO L87 Difference]: Start difference. First operand 569 states and 929 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:09,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:09,663 INFO L93 Difference]: Finished difference Result 1382 states and 2337 transitions. [2022-11-20 10:31:09,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:31:09,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-11-20 10:31:09,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:09,670 INFO L225 Difference]: With dead ends: 1382 [2022-11-20 10:31:09,671 INFO L226 Difference]: Without dead ends: 829 [2022-11-20 10:31:09,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:31:09,676 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 841 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 5212 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 5212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:09,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2375 Invalid, 5422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [210 Valid, 5212 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-20 10:31:09,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-20 10:31:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 569. [2022-11-20 10:31:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 435 states have (on average 1.6436781609195403) internal successors, (715), 453 states have internal predecessors, (715), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 10:31:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 928 transitions. [2022-11-20 10:31:09,863 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 928 transitions. Word has length 70 [2022-11-20 10:31:09,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:09,863 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 928 transitions. [2022-11-20 10:31:09,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:09,864 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 928 transitions. [2022-11-20 10:31:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 10:31:09,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:09,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:09,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:31:09,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:09,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:09,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1841165080, now seen corresponding path program 1 times [2022-11-20 10:31:09,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:09,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698115719] [2022-11-20 10:31:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:09,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:31:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:31:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:31:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 10:31:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:31:10,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698115719] [2022-11-20 10:31:10,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698115719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:10,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:10,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:31:10,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031912597] [2022-11-20 10:31:10,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:10,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:31:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:31:10,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:31:10,431 INFO L87 Difference]: Start difference. First operand 569 states and 928 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:19,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:19,296 INFO L93 Difference]: Finished difference Result 1400 states and 2357 transitions. [2022-11-20 10:31:19,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:31:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-11-20 10:31:19,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:19,304 INFO L225 Difference]: With dead ends: 1400 [2022-11-20 10:31:19,304 INFO L226 Difference]: Without dead ends: 823 [2022-11-20 10:31:19,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:31:19,309 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 870 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 5226 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 5432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 5226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:19,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 2520 Invalid, 5432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [206 Valid, 5226 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-20 10:31:19,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-11-20 10:31:19,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 563. [2022-11-20 10:31:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.6363636363636365) internal successors, (702), 447 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 10:31:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 915 transitions. [2022-11-20 10:31:19,436 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 915 transitions. Word has length 71 [2022-11-20 10:31:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:19,437 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 915 transitions. [2022-11-20 10:31:19,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 915 transitions. [2022-11-20 10:31:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 10:31:19,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:19,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:19,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:31:19,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:19,439 INFO L85 PathProgramCache]: Analyzing trace with hash 745123459, now seen corresponding path program 1 times [2022-11-20 10:31:19,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:19,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939993291] [2022-11-20 10:31:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:31:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:20,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 10:31:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:20,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:31:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:31:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:31:20,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:20,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939993291] [2022-11-20 10:31:20,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939993291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:20,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:20,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:31:20,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662513942] [2022-11-20 10:31:20,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:20,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:31:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:20,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:31:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:31:20,018 INFO L87 Difference]: Start difference. First operand 563 states and 915 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:28,875 INFO L93 Difference]: Finished difference Result 1370 states and 2308 transitions. [2022-11-20 10:31:28,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:31:28,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-11-20 10:31:28,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:28,882 INFO L225 Difference]: With dead ends: 1370 [2022-11-20 10:31:28,882 INFO L226 Difference]: Without dead ends: 823 [2022-11-20 10:31:28,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:31:28,890 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 830 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 5089 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 5089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:28,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 2421 Invalid, 5298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [209 Valid, 5089 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-20 10:31:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-11-20 10:31:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 563. [2022-11-20 10:31:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.634032634032634) internal successors, (701), 447 states have internal predecessors, (701), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 10:31:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 914 transitions. [2022-11-20 10:31:29,024 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 914 transitions. Word has length 72 [2022-11-20 10:31:29,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:29,025 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 914 transitions. [2022-11-20 10:31:29,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 914 transitions. [2022-11-20 10:31:29,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 10:31:29,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:29,029 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:31:29,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:31:29,029 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:29,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:29,030 INFO L85 PathProgramCache]: Analyzing trace with hash -155039253, now seen corresponding path program 1 times [2022-11-20 10:31:29,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:29,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117287056] [2022-11-20 10:31:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:31:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 10:31:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:31:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:31:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:31:29,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:29,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117287056] [2022-11-20 10:31:29,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117287056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:29,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:29,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:31:29,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078180243] [2022-11-20 10:31:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:29,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:31:29,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:31:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:31:29,620 INFO L87 Difference]: Start difference. First operand 563 states and 914 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:38,275 INFO L93 Difference]: Finished difference Result 1391 states and 2330 transitions. [2022-11-20 10:31:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:31:38,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-11-20 10:31:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:38,281 INFO L225 Difference]: With dead ends: 1391 [2022-11-20 10:31:38,281 INFO L226 Difference]: Without dead ends: 844 [2022-11-20 10:31:38,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:31:38,286 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1421 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 4966 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 5400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 4966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:38,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 2408 Invalid, 5400 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [434 Valid, 4966 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-20 10:31:38,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-11-20 10:31:38,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 568. [2022-11-20 10:31:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 434 states have (on average 1.6267281105990783) internal successors, (706), 452 states have internal predecessors, (706), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 10:31:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 919 transitions. [2022-11-20 10:31:38,410 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 919 transitions. Word has length 73 [2022-11-20 10:31:38,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:38,411 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 919 transitions. [2022-11-20 10:31:38,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 919 transitions. [2022-11-20 10:31:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 10:31:38,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:38,412 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:31:38,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:31:38,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:38,413 INFO L85 PathProgramCache]: Analyzing trace with hash -954856244, now seen corresponding path program 1 times [2022-11-20 10:31:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:38,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111841943] [2022-11-20 10:31:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:38,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:38,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:31:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:38,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 10:31:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:38,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:31:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:38,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:31:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:31:38,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:38,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111841943] [2022-11-20 10:31:38,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111841943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:38,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:38,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:31:38,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796812017] [2022-11-20 10:31:38,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:38,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:31:38,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:38,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:31:38,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:31:38,978 INFO L87 Difference]: Start difference. First operand 568 states and 919 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:47,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:47,544 INFO L93 Difference]: Finished difference Result 1393 states and 2329 transitions. [2022-11-20 10:31:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:31:47,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-11-20 10:31:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:47,550 INFO L225 Difference]: With dead ends: 1393 [2022-11-20 10:31:47,550 INFO L226 Difference]: Without dead ends: 817 [2022-11-20 10:31:47,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:31:47,554 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1433 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 5401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:47,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 2419 Invalid, 5401 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [429 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-20 10:31:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-20 10:31:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 557. [2022-11-20 10:31:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 423 states have (on average 1.624113475177305) internal successors, (687), 441 states have internal predecessors, (687), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 10:31:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 900 transitions. [2022-11-20 10:31:47,713 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 900 transitions. Word has length 73 [2022-11-20 10:31:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:47,714 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 900 transitions. [2022-11-20 10:31:47,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 900 transitions. [2022-11-20 10:31:47,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 10:31:47,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:47,716 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:31:47,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:31:47,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1686237128, now seen corresponding path program 1 times [2022-11-20 10:31:47,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:47,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834288501] [2022-11-20 10:31:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:48,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:31:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 10:31:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 10:31:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:31:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:31:48,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:48,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834288501] [2022-11-20 10:31:48,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834288501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:48,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:48,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:31:48,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780740978] [2022-11-20 10:31:48,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:48,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:31:48,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:48,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:31:48,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:31:48,256 INFO L87 Difference]: Start difference. First operand 557 states and 900 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:31:57,072 INFO L93 Difference]: Finished difference Result 1370 states and 2289 transitions. [2022-11-20 10:31:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:31:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-11-20 10:31:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:31:57,079 INFO L225 Difference]: With dead ends: 1370 [2022-11-20 10:31:57,079 INFO L226 Difference]: Without dead ends: 829 [2022-11-20 10:31:57,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:31:57,081 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 789 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 5021 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 5233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 5021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:31:57,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 2400 Invalid, 5233 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [212 Valid, 5021 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-20 10:31:57,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-20 10:31:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 563. [2022-11-20 10:31:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.6153846153846154) internal successors, (693), 447 states have internal predecessors, (693), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 10:31:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 906 transitions. [2022-11-20 10:31:57,216 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 906 transitions. Word has length 74 [2022-11-20 10:31:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:31:57,217 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 906 transitions. [2022-11-20 10:31:57,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:31:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 906 transitions. [2022-11-20 10:31:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 10:31:57,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:31:57,218 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:31:57,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:31:57,219 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:57,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash -159130038, now seen corresponding path program 1 times [2022-11-20 10:31:57,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:57,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911635176] [2022-11-20 10:31:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:57,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:31:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:31:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:31:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 10:31:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 10:31:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:31:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:31:57,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:57,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911635176] [2022-11-20 10:31:57,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911635176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:57,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:57,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:31:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310154984] [2022-11-20 10:31:57,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:57,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:31:57,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:31:57,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:31:57,736 INFO L87 Difference]: Start difference. First operand 563 states and 906 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:32:05,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:05,956 INFO L93 Difference]: Finished difference Result 1373 states and 2290 transitions. [2022-11-20 10:32:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:32:05,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-11-20 10:32:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:05,961 INFO L225 Difference]: With dead ends: 1373 [2022-11-20 10:32:05,961 INFO L226 Difference]: Without dead ends: 817 [2022-11-20 10:32:05,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:32:05,964 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 1403 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 4849 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 5282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 4849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:05,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 2361 Invalid, 5282 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 4849 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 10:32:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-20 10:32:06,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 557. [2022-11-20 10:32:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 423 states have (on average 1.6217494089834514) internal successors, (686), 441 states have internal predecessors, (686), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 10:32:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 899 transitions. [2022-11-20 10:32:06,081 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 899 transitions. Word has length 74 [2022-11-20 10:32:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:06,081 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 899 transitions. [2022-11-20 10:32:06,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:32:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 899 transitions. [2022-11-20 10:32:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 10:32:06,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:06,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:06,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:32:06,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:06,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1851808175, now seen corresponding path program 1 times [2022-11-20 10:32:06,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:06,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564944616] [2022-11-20 10:32:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:06,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:06,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:32:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:06,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:06,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:06,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:32:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:32:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:06,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:32:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:32:06,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:06,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564944616] [2022-11-20 10:32:06,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564944616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:06,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:06,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:32:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40391295] [2022-11-20 10:32:06,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:06,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:32:06,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:32:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:32:06,676 INFO L87 Difference]: Start difference. First operand 557 states and 899 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 10:32:21,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:21,557 INFO L93 Difference]: Finished difference Result 2113 states and 3582 transitions. [2022-11-20 10:32:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:32:21,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2022-11-20 10:32:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:21,575 INFO L225 Difference]: With dead ends: 2113 [2022-11-20 10:32:21,575 INFO L226 Difference]: Without dead ends: 1574 [2022-11-20 10:32:21,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:32:21,583 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 3172 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 5635 mSolverCounterSat, 1178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3311 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 6813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1178 IncrementalHoareTripleChecker+Valid, 5635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:21,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3311 Valid, 2074 Invalid, 6813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1178 Valid, 5635 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-11-20 10:32:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-11-20 10:32:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1197. [2022-11-20 10:32:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 869 states have (on average 1.571921749136939) internal successors, (1366), 923 states have internal predecessors, (1366), 273 states have call successors, (273), 51 states have call predecessors, (273), 54 states have return successors, (347), 265 states have call predecessors, (347), 269 states have call successors, (347) [2022-11-20 10:32:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1986 transitions. [2022-11-20 10:32:22,044 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1986 transitions. Word has length 75 [2022-11-20 10:32:22,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:22,045 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1986 transitions. [2022-11-20 10:32:22,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 10:32:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1986 transitions. [2022-11-20 10:32:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 10:32:22,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:22,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:22,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:32:22,047 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:22,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:22,047 INFO L85 PathProgramCache]: Analyzing trace with hash -458912943, now seen corresponding path program 1 times [2022-11-20 10:32:22,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:22,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139574462] [2022-11-20 10:32:22,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:22,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:32:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:32:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:32:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:32:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:32:22,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:22,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139574462] [2022-11-20 10:32:22,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139574462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:22,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619164674] [2022-11-20 10:32:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:22,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:22,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:22,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:22,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:32:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:22,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:22,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:23,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:23,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619164674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:23,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:32:23,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-20 10:32:23,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641027401] [2022-11-20 10:32:23,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:23,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:23,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:32:23,055 INFO L87 Difference]: Start difference. First operand 1197 states and 1986 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:32:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:23,717 INFO L93 Difference]: Finished difference Result 3463 states and 5820 transitions. [2022-11-20 10:32:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-11-20 10:32:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:23,733 INFO L225 Difference]: With dead ends: 3463 [2022-11-20 10:32:23,733 INFO L226 Difference]: Without dead ends: 2284 [2022-11-20 10:32:23,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:32:23,740 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 863 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:23,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1838 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:32:23,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2022-11-20 10:32:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2223. [2022-11-20 10:32:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1616 states have (on average 1.5866336633663367) internal successors, (2564), 1724 states have internal predecessors, (2564), 503 states have call successors, (503), 92 states have call predecessors, (503), 103 states have return successors, (664), 492 states have call predecessors, (664), 499 states have call successors, (664) [2022-11-20 10:32:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3731 transitions. [2022-11-20 10:32:24,505 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3731 transitions. Word has length 75 [2022-11-20 10:32:24,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:24,506 INFO L495 AbstractCegarLoop]: Abstraction has 2223 states and 3731 transitions. [2022-11-20 10:32:24,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:32:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3731 transitions. [2022-11-20 10:32:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 10:32:24,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:24,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:24,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:32:24,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:32:24,721 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:24,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1231115865, now seen corresponding path program 1 times [2022-11-20 10:32:24,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:24,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529547081] [2022-11-20 10:32:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:32:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:32:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:32:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:32:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:32:25,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:25,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529547081] [2022-11-20 10:32:25,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529547081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:25,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716804724] [2022-11-20 10:32:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:25,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:25,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:25,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:25,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:32:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:25,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:32:25,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:25,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:32:25,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716804724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:25,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:32:25,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-20 10:32:25,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277591677] [2022-11-20 10:32:25,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:25,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:32:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:25,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:32:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:32:25,836 INFO L87 Difference]: Start difference. First operand 2223 states and 3731 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:32:26,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:26,941 INFO L93 Difference]: Finished difference Result 5059 states and 8563 transitions. [2022-11-20 10:32:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:32:26,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-11-20 10:32:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:26,963 INFO L225 Difference]: With dead ends: 5059 [2022-11-20 10:32:26,963 INFO L226 Difference]: Without dead ends: 2854 [2022-11-20 10:32:26,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:32:26,976 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 861 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:26,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1774 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:32:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-11-20 10:32:27,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2655. [2022-11-20 10:32:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2655 states, 1950 states have (on average 1.6) internal successors, (3120), 2075 states have internal predecessors, (3120), 581 states have call successors, (581), 111 states have call predecessors, (581), 123 states have return successors, (746), 568 states have call predecessors, (746), 577 states have call successors, (746) [2022-11-20 10:32:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 4447 transitions. [2022-11-20 10:32:27,844 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 4447 transitions. Word has length 76 [2022-11-20 10:32:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:27,849 INFO L495 AbstractCegarLoop]: Abstraction has 2655 states and 4447 transitions. [2022-11-20 10:32:27,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:32:27,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 4447 transitions. [2022-11-20 10:32:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 10:32:27,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:27,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:27,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:28,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c935d201-20ed-4e10-950b-fa62615151b7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:28,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:28,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1359357280, now seen corresponding path program 1 times [2022-11-20 10:32:28,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:28,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406232203] [2022-11-20 10:32:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:28,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:32:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:32:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:32:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:32:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 10:32:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:32:28,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:28,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406232203] [2022-11-20 10:32:28,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406232203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:28,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:28,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:32:28,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277901239] [2022-11-20 10:32:28,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:28,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:32:28,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:28,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:32:28,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:32:28,599 INFO L87 Difference]: Start difference. First operand 2655 states and 4447 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 10:32:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:47,700 INFO L93 Difference]: Finished difference Result 9769 states and 17343 transitions. [2022-11-20 10:32:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:32:47,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2022-11-20 10:32:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:47,750 INFO L225 Difference]: With dead ends: 9769 [2022-11-20 10:32:47,750 INFO L226 Difference]: Without dead ends: 7132 [2022-11-20 10:32:47,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:32:47,767 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 2431 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 6138 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 6972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 6138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:47,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2570 Valid, 2586 Invalid, 6972 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [834 Valid, 6138 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2022-11-20 10:32:47,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7132 states. [2022-11-20 10:32:50,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7132 to 5867. [2022-11-20 10:32:50,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 4171 states have (on average 1.575161831695037) internal successors, (6570), 4516 states have internal predecessors, (6570), 1402 states have call successors, (1402), 216 states have call predecessors, (1402), 293 states have return successors, (2288), 1400 states have call predecessors, (2288), 1396 states have call successors, (2288) [2022-11-20 10:32:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 10260 transitions. [2022-11-20 10:32:50,320 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 10260 transitions. Word has length 78 [2022-11-20 10:32:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:50,321 INFO L495 AbstractCegarLoop]: Abstraction has 5867 states and 10260 transitions. [2022-11-20 10:32:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 10:32:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 10260 transitions. [2022-11-20 10:32:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:32:50,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:50,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:50,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:32:50,325 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash -599142051, now seen corresponding path program 1 times [2022-11-20 10:32:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:50,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411566165] [2022-11-20 10:32:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:50,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:32:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:32:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:32:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:32:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:32:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:32:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 10:32:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:32:50,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:50,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411566165] [2022-11-20 10:32:50,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411566165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:50,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:50,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:32:50,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843060650] [2022-11-20 10:32:50,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:50,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:32:50,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:50,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:32:50,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:32:50,785 INFO L87 Difference]: Start difference. First operand 5867 states and 10260 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 10:33:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:00,136 INFO L93 Difference]: Finished difference Result 12689 states and 22522 transitions. [2022-11-20 10:33:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:00,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-11-20 10:33:00,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:00,198 INFO L225 Difference]: With dead ends: 12689 [2022-11-20 10:33:00,199 INFO L226 Difference]: Without dead ends: 6840 [2022-11-20 10:33:00,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:33:00,236 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 784 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:00,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1555 Invalid, 2907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [195 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 10:33:00,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2022-11-20 10:33:02,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 5875. [2022-11-20 10:33:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5875 states, 4177 states have (on average 1.5738568350490783) internal successors, (6574), 4522 states have internal predecessors, (6574), 1402 states have call successors, (1402), 220 states have call predecessors, (1402), 295 states have return successors, (2278), 1398 states have call predecessors, (2278), 1396 states have call successors, (2278) [2022-11-20 10:33:02,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5875 states to 5875 states and 10254 transitions. [2022-11-20 10:33:02,514 INFO L78 Accepts]: Start accepts. Automaton has 5875 states and 10254 transitions. Word has length 79 [2022-11-20 10:33:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:02,514 INFO L495 AbstractCegarLoop]: Abstraction has 5875 states and 10254 transitions. [2022-11-20 10:33:02,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 10:33:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5875 states and 10254 transitions. [2022-11-20 10:33:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 10:33:02,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:02,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:02,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:33:02,518 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash 687934125, now seen corresponding path program 1 times [2022-11-20 10:33:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:02,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130142889] [2022-11-20 10:33:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:02,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:33:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:33:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:33:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:33:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:33:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:33:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:33:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:33:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:33:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:33:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:33:03,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:03,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130142889] [2022-11-20 10:33:03,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130142889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:03,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:03,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:33:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092361897] [2022-11-20 10:33:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:03,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:33:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:33:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:33:03,105 INFO L87 Difference]: Start difference. First operand 5875 states and 10254 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 10:33:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:23,444 INFO L93 Difference]: Finished difference Result 20164 states and 37621 transitions. [2022-11-20 10:33:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:33:23,445 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-11-20 10:33:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:23,583 INFO L225 Difference]: With dead ends: 20164 [2022-11-20 10:33:23,583 INFO L226 Difference]: Without dead ends: 14307 [2022-11-20 10:33:23,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:33:23,632 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 3525 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 5801 mSolverCounterSat, 1217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 7018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1217 IncrementalHoareTripleChecker+Valid, 5801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:23,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3662 Valid, 2651 Invalid, 7018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1217 Valid, 5801 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-11-20 10:33:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14307 states. [2022-11-20 10:33:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14307 to 11817. [2022-11-20 10:33:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 8355 states have (on average 1.5684021543985638) internal successors, (13104), 9053 states have internal predecessors, (13104), 2868 states have call successors, (2868), 434 states have call predecessors, (2868), 593 states have return successors, (5248), 2876 states have call predecessors, (5248), 2858 states have call successors, (5248) [2022-11-20 10:33:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 21220 transitions. [2022-11-20 10:33:28,842 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 21220 transitions. Word has length 87 [2022-11-20 10:33:28,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:28,843 INFO L495 AbstractCegarLoop]: Abstraction has 11817 states and 21220 transitions. [2022-11-20 10:33:28,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 10:33:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 21220 transitions. [2022-11-20 10:33:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 10:33:28,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:28,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:28,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:33:28,846 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:28,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:28,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1924648248, now seen corresponding path program 1 times [2022-11-20 10:33:28,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:28,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984291835] [2022-11-20 10:33:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:28,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:33:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:33:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:33:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:33:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:33:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:33:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:33:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:33:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:33:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:33:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:33:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:29,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984291835] [2022-11-20 10:33:29,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984291835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:29,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:29,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:33:29,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573351272] [2022-11-20 10:33:29,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:29,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:33:29,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:29,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:33:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:33:29,256 INFO L87 Difference]: Start difference. First operand 11817 states and 21220 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 10:33:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:41,287 INFO L93 Difference]: Finished difference Result 25350 states and 46602 transitions. [2022-11-20 10:33:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:41,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-11-20 10:33:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:41,404 INFO L225 Difference]: With dead ends: 25350 [2022-11-20 10:33:41,405 INFO L226 Difference]: Without dead ends: 13551 [2022-11-20 10:33:41,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:33:41,477 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 791 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:41,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1570 Invalid, 2900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [195 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 10:33:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13551 states. [2022-11-20 10:33:46,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13551 to 11857. [2022-11-20 10:33:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11857 states, 8391 states have (on average 1.5664402335836014) internal successors, (13144), 9081 states have internal predecessors, (13144), 2868 states have call successors, (2868), 450 states have call predecessors, (2868), 597 states have return successors, (5234), 2872 states have call predecessors, (5234), 2858 states have call successors, (5234) [2022-11-20 10:33:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11857 states to 11857 states and 21246 transitions. [2022-11-20 10:33:46,709 INFO L78 Accepts]: Start accepts. Automaton has 11857 states and 21246 transitions. Word has length 88 [2022-11-20 10:33:46,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:46,710 INFO L495 AbstractCegarLoop]: Abstraction has 11857 states and 21246 transitions. [2022-11-20 10:33:46,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 10:33:46,710 INFO L276 IsEmpty]: Start isEmpty. Operand 11857 states and 21246 transitions. [2022-11-20 10:33:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 10:33:46,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:46,714 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:33:46,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:33:46,714 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:46,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:46,715 INFO L85 PathProgramCache]: Analyzing trace with hash -18431621, now seen corresponding path program 1 times [2022-11-20 10:33:46,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:46,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189138907] [2022-11-20 10:33:46,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:46,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:33:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:33:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:33:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:33:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:33:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:33:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:33:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:33:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:33:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:33:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 10:33:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:33:47,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:47,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189138907] [2022-11-20 10:33:47,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189138907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:47,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:47,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:33:47,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091663957] [2022-11-20 10:33:47,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:47,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:33:47,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:47,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:33:47,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:33:47,239 INFO L87 Difference]: Start difference. First operand 11857 states and 21246 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 10:34:13,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:13,799 INFO L93 Difference]: Finished difference Result 40469 states and 80608 transitions. [2022-11-20 10:34:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:34:13,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-11-20 10:34:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:14,045 INFO L225 Difference]: With dead ends: 40469 [2022-11-20 10:34:14,046 INFO L226 Difference]: Without dead ends: 28630 [2022-11-20 10:34:14,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:34:14,146 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 2409 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 6112 mSolverCounterSat, 814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 6926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 814 IncrementalHoareTripleChecker+Valid, 6112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:14,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 2637 Invalid, 6926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [814 Valid, 6112 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2022-11-20 10:34:14,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2022-11-20 10:34:24,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 23761. [2022-11-20 10:34:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23761 states, 16806 states have (on average 1.5627751993335715) internal successors, (26264), 18187 states have internal predecessors, (26264), 5749 states have call successors, (5749), 894 states have call predecessors, (5749), 1205 states have return successors, (12190), 5778 states have call predecessors, (12190), 5731 states have call successors, (12190) [2022-11-20 10:34:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23761 states to 23761 states and 44203 transitions. [2022-11-20 10:34:24,585 INFO L78 Accepts]: Start accepts. Automaton has 23761 states and 44203 transitions. Word has length 97 [2022-11-20 10:34:24,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:24,586 INFO L495 AbstractCegarLoop]: Abstraction has 23761 states and 44203 transitions. [2022-11-20 10:34:24,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 10:34:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 23761 states and 44203 transitions. [2022-11-20 10:34:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 10:34:24,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:24,589 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-11-20 10:34:24,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:34:24,590 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash 689445490, now seen corresponding path program 1 times [2022-11-20 10:34:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:24,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148968298] [2022-11-20 10:34:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:34:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:34:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:34:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:34:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:34:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:34:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:34:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:34:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:34:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:34:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:34:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:34:24,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:24,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148968298] [2022-11-20 10:34:24,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148968298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:24,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:24,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:34:24,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495295830] [2022-11-20 10:34:24,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:24,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:34:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:34:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:34:24,984 INFO L87 Difference]: Start difference. First operand 23761 states and 44203 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:34:41,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:41,217 INFO L93 Difference]: Finished difference Result 50837 states and 98531 transitions. [2022-11-20 10:34:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:34:41,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-11-20 10:34:41,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:41,440 INFO L225 Difference]: With dead ends: 50837 [2022-11-20 10:34:41,440 INFO L226 Difference]: Without dead ends: 27094 [2022-11-20 10:34:41,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:34:41,858 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 793 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:41,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1560 Invalid, 2907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [196 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 10:34:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27094 states. [2022-11-20 10:34:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27094 to 23841. [2022-11-20 10:34:49,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23841 states, 16878 states have (on average 1.5608484417585022) internal successors, (26344), 18259 states have internal predecessors, (26344), 5749 states have call successors, (5749), 910 states have call predecessors, (5749), 1213 states have return successors, (12174), 5770 states have call predecessors, (12174), 5731 states have call successors, (12174) [2022-11-20 10:34:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23841 states to 23841 states and 44267 transitions. [2022-11-20 10:34:50,226 INFO L78 Accepts]: Start accepts. Automaton has 23841 states and 44267 transitions. Word has length 98 [2022-11-20 10:34:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:50,226 INFO L495 AbstractCegarLoop]: Abstraction has 23841 states and 44267 transitions. [2022-11-20 10:34:50,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:34:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 23841 states and 44267 transitions. [2022-11-20 10:34:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 10:34:50,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:50,230 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-11-20 10:34:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:34:50,231 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:34:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1299400590, now seen corresponding path program 1 times [2022-11-20 10:34:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:50,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119955721] [2022-11-20 10:34:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:34:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:34:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:34:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:34:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:34:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:34:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:34:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:34:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:34:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:34:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:34:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 10:34:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 10:34:50,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:50,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119955721] [2022-11-20 10:34:50,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119955721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:34:50,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:34:50,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:34:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50335955] [2022-11-20 10:34:50,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:34:50,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:34:50,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:50,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:34:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:34:50,727 INFO L87 Difference]: Start difference. First operand 23841 states and 44267 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12)