./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc --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 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 --- 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-5e519f3 [2022-11-02 19:54:08,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:54:08,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:54:08,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:54:08,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:54:08,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:54:08,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:54:08,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:54:08,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:54:08,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:54:08,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:54:08,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:54:08,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:54:08,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:54:08,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:54:08,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:54:08,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:54:08,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:54:08,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:54:08,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:54:08,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:54:08,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:54:08,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:54:08,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:54:08,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:54:08,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:54:08,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:54:08,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:54:08,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:54:08,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:54:08,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:54:08,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:54:08,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:54:08,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:54:08,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:54:08,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:54:08,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:54:08,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:54:08,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:54:08,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:54:08,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:54:08,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:54:08,572 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:54:08,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:54:08,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:54:08,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:54:08,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:54:08,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:54:08,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:54:08,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:54:08,575 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:54:08,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:54:08,576 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:54:08,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:54:08,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:54:08,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:54:08,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:54:08,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:54:08,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:54:08,577 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:54:08,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:54:08,578 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:54:08,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:54:08,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:54:08,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:54:08,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:54:08,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:54:08,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:54:08,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:54:08,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:54:08,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:54:08,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:54:08,581 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:54:08,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:54:08,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:54:08,582 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_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 [2022-11-02 19:54:08,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:54:08,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:54:08,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:54:08,906 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:54:08,907 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:54:08,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2022-11-02 19:54:08,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/data/7503d25a5/46e860fc9ba041d8b6e348cc10300c42/FLAGbfdf5d847 [2022-11-02 19:54:09,565 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:54:09,565 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2022-11-02 19:54:09,588 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/data/7503d25a5/46e860fc9ba041d8b6e348cc10300c42/FLAGbfdf5d847 [2022-11-02 19:54:09,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/data/7503d25a5/46e860fc9ba041d8b6e348cc10300c42 [2022-11-02 19:54:09,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:54:09,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:54:09,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:54:09,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:54:09,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:54:09,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:54:09" (1/1) ... [2022-11-02 19:54:09,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17cf13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:09, skipping insertion in model container [2022-11-02 19:54:09,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:54:09" (1/1) ... [2022-11-02 19:54:09,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:54:09,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:54:10,321 WARN L230 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_c465281a-4d69-4839-b48d-2ba51a9e6dcf/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2022-11-02 19:54:10,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:54:10,598 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:54:10,632 WARN L230 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_c465281a-4d69-4839-b48d-2ba51a9e6dcf/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2022-11-02 19:54:10,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:54:10,723 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:54:10,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10 WrapperNode [2022-11-02 19:54:10,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:54:10,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:54:10,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:54:10,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:54:10,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:10,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:10,863 INFO L138 Inliner]: procedures = 95, calls = 342, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1163 [2022-11-02 19:54:10,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:54:10,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:54:10,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:54:10,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:54:10,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:10,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:10,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:10,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:10,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:10,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:10,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:10,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:11,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:54:11,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:54:11,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:54:11,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:54:11,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (1/1) ... [2022-11-02 19:54:11,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:54:11,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:54:11,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:54:11,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:54:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:54:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-02 19:54:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-02 19:54:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-02 19:54:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-02 19:54:11,146 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-02 19:54:11,146 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-02 19:54:11,148 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-02 19:54:11,149 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-02 19:54:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-02 19:54:11,149 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-02 19:54:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-02 19:54:11,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-02 19:54:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-02 19:54:11,149 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-02 19:54:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-02 19:54:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-02 19:54:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-02 19:54:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-02 19:54:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-02 19:54:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-02 19:54:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-02 19:54:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-02 19:54:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-02 19:54:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-02 19:54:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-02 19:54:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-02 19:54:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-02 19:54:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-02 19:54:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-02 19:54:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-02 19:54:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-02 19:54:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-02 19:54:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-02 19:54:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-02 19:54:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-02 19:54:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-02 19:54:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-02 19:54:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-02 19:54:11,153 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-02 19:54:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-02 19:54:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:54:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-02 19:54:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-02 19:54:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-02 19:54:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-02 19:54:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-02 19:54:11,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-02 19:54:11,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:54:11,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:54:11,155 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-02 19:54:11,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-02 19:54:11,398 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:54:11,400 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:54:12,738 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:54:12,751 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:54:12,751 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:54:12,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:54:12 BoogieIcfgContainer [2022-11-02 19:54:12,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:54:12,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:54:12,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:54:12,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:54:12,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:54:09" (1/3) ... [2022-11-02 19:54:12,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d4c712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:54:12, skipping insertion in model container [2022-11-02 19:54:12,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:10" (2/3) ... [2022-11-02 19:54:12,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d4c712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:54:12, skipping insertion in model container [2022-11-02 19:54:12,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:54:12" (3/3) ... [2022-11-02 19:54:12,768 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.c [2022-11-02 19:54:12,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:54:12,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:54:12,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:54:12,909 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;@1f7ad718, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:54:12,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:54:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 447 states have (on average 1.691275167785235) internal successors, (756), 468 states have internal predecessors, (756), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-02 19:54:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-02 19:54:12,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:12,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:12,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash -289934377, now seen corresponding path program 1 times [2022-11-02 19:54:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:12,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703880017] [2022-11-02 19:54:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:12,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:13,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:54:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 19:54:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 19:54:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:54:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:54:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:54:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:54:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:54:14,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:14,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703880017] [2022-11-02 19:54:14,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703880017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:14,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:14,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:14,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606186820] [2022-11-02 19:54:14,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:14,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:14,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:14,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:14,547 INFO L87 Difference]: Start difference. First operand has 569 states, 447 states have (on average 1.691275167785235) internal successors, (756), 468 states have internal predecessors, (756), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:22,040 INFO L93 Difference]: Finished difference Result 1379 states and 2333 transitions. [2022-11-02 19:54:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:22,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-02 19:54:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:22,067 INFO L225 Difference]: With dead ends: 1379 [2022-11-02 19:54:22,068 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 19:54:22,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:22,082 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 1434 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:22,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 2359 Invalid, 2852 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [427 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-02 19:54:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 19:54:22,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-02 19:54:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6870748299319729) internal successors, (744), 460 states have internal predecessors, (744), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:54:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 931 transitions. [2022-11-02 19:54:22,340 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 931 transitions. Word has length 102 [2022-11-02 19:54:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:22,341 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 931 transitions. [2022-11-02 19:54:22,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 931 transitions. [2022-11-02 19:54:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-02 19:54:22,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:22,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:22,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:54:22,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:22,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1378724081, now seen corresponding path program 1 times [2022-11-02 19:54:22,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:22,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762066313] [2022-11-02 19:54:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:22,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:54:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:54:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 19:54:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:54:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:54:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:54:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:54:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:54:22,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:22,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762066313] [2022-11-02 19:54:22,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762066313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:22,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:22,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:22,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323991238] [2022-11-02 19:54:22,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:22,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:22,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:22,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:22,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:22,960 INFO L87 Difference]: Start difference. First operand 561 states and 931 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:29,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:29,717 INFO L93 Difference]: Finished difference Result 1365 states and 2295 transitions. [2022-11-02 19:54:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-11-02 19:54:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:29,736 INFO L225 Difference]: With dead ends: 1365 [2022-11-02 19:54:29,736 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 19:54:29,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:29,748 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 1429 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:29,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 2330 Invalid, 2843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [427 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-02 19:54:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 19:54:29,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-02 19:54:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 460 states have internal predecessors, (743), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:54:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 930 transitions. [2022-11-02 19:54:29,937 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 930 transitions. Word has length 105 [2022-11-02 19:54:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:29,938 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 930 transitions. [2022-11-02 19:54:29,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 930 transitions. [2022-11-02 19:54:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 19:54:29,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:29,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:29,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:54:29,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash 776360423, now seen corresponding path program 1 times [2022-11-02 19:54:29,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:29,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196134760] [2022-11-02 19:54:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:54:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:54:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 19:54:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:54:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:54:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:54:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:54:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:54:30,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:30,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196134760] [2022-11-02 19:54:30,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196134760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:30,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:30,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:30,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689034904] [2022-11-02 19:54:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:30,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:30,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:30,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:30,581 INFO L87 Difference]: Start difference. First operand 561 states and 930 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:37,059 INFO L93 Difference]: Finished difference Result 1365 states and 2294 transitions. [2022-11-02 19:54:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:37,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-11-02 19:54:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:37,067 INFO L225 Difference]: With dead ends: 1365 [2022-11-02 19:54:37,067 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 19:54:37,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:37,072 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 1427 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:37,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 2317 Invalid, 2846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [432 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-02 19:54:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 19:54:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-02 19:54:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6825396825396826) internal successors, (742), 460 states have internal predecessors, (742), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:54:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 929 transitions. [2022-11-02 19:54:37,214 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 929 transitions. Word has length 106 [2022-11-02 19:54:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:37,214 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 929 transitions. [2022-11-02 19:54:37,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 929 transitions. [2022-11-02 19:54:37,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-02 19:54:37,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:37,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:37,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:54:37,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash -774044371, now seen corresponding path program 1 times [2022-11-02 19:54:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:37,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519296693] [2022-11-02 19:54:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:37,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:54:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 19:54:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 19:54:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:54:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:54:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:54:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:54:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:54:37,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:37,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519296693] [2022-11-02 19:54:37,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519296693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:37,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:37,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:37,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811622459] [2022-11-02 19:54:37,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:37,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:37,863 INFO L87 Difference]: Start difference. First operand 561 states and 929 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:43,982 INFO L93 Difference]: Finished difference Result 1365 states and 2293 transitions. [2022-11-02 19:54:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-11-02 19:54:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:43,990 INFO L225 Difference]: With dead ends: 1365 [2022-11-02 19:54:43,990 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 19:54:43,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:43,994 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 1860 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:43,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 2251 Invalid, 2949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [591 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 19:54:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 19:54:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-02 19:54:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6802721088435375) internal successors, (741), 460 states have internal predecessors, (741), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:54:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2022-11-02 19:54:44,159 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 107 [2022-11-02 19:54:44,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:44,159 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2022-11-02 19:54:44,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:44,160 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2022-11-02 19:54:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 19:54:44,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:44,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:44,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:54:44,164 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:44,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:44,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1648953309, now seen corresponding path program 1 times [2022-11-02 19:54:44,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:44,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579244188] [2022-11-02 19:54:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:44,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:54:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 19:54:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 19:54:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:54:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:54:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:54:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:54:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:54:44,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:44,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579244188] [2022-11-02 19:54:44,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579244188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:44,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:44,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:44,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372662749] [2022-11-02 19:54:44,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:44,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:44,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:44,726 INFO L87 Difference]: Start difference. First operand 561 states and 928 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:51,046 INFO L93 Difference]: Finished difference Result 1365 states and 2292 transitions. [2022-11-02 19:54:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:51,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-11-02 19:54:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:51,052 INFO L225 Difference]: With dead ends: 1365 [2022-11-02 19:54:51,052 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 19:54:51,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:51,056 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 1847 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:51,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 2269 Invalid, 2936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [582 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-02 19:54:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 19:54:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-02 19:54:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6780045351473922) internal successors, (740), 460 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:54:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2022-11-02 19:54:51,204 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 108 [2022-11-02 19:54:51,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:51,205 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2022-11-02 19:54:51,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:51,205 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2022-11-02 19:54:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-02 19:54:51,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:51,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:51,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 19:54:51,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:51,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1236640105, now seen corresponding path program 1 times [2022-11-02 19:54:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:51,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520727692] [2022-11-02 19:54:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:51,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:54:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:54:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 19:54:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:54:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:54:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:54:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:54:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:54:51,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:51,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520727692] [2022-11-02 19:54:51,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520727692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:51,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:51,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857426349] [2022-11-02 19:54:51,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:51,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:51,792 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:58,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:58,526 INFO L93 Difference]: Finished difference Result 1325 states and 2216 transitions. [2022-11-02 19:54:58,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:54:58,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-11-02 19:54:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:58,533 INFO L225 Difference]: With dead ends: 1325 [2022-11-02 19:54:58,533 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 19:54:58,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:54:58,537 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 1458 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:58,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 2261 Invalid, 2991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [497 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-02 19:54:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 19:54:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-02 19:54:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6666666666666667) internal successors, (735), 460 states have internal predecessors, (735), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:54:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 922 transitions. [2022-11-02 19:54:58,737 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 922 transitions. Word has length 109 [2022-11-02 19:54:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:58,737 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 922 transitions. [2022-11-02 19:54:58,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:54:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 922 transitions. [2022-11-02 19:54:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 19:54:58,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:58,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:58,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 19:54:58,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:54:58,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash -130417927, now seen corresponding path program 1 times [2022-11-02 19:54:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:58,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194782147] [2022-11-02 19:54:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:58,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:58,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:54:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:54:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 19:54:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:54:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:54:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:54:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:54:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:54:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:54:59,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:59,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194782147] [2022-11-02 19:54:59,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194782147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:59,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:59,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:54:59,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930126835] [2022-11-02 19:54:59,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:59,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:54:59,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:59,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:54:59,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:54:59,332 INFO L87 Difference]: Start difference. First operand 561 states and 922 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:06,068 INFO L93 Difference]: Finished difference Result 1325 states and 2211 transitions. [2022-11-02 19:55:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:55:06,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-11-02 19:55:06,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:06,075 INFO L225 Difference]: With dead ends: 1325 [2022-11-02 19:55:06,075 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 19:55:06,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:55:06,079 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 1026 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:06,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 2347 Invalid, 2890 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [326 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-02 19:55:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 19:55:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-02 19:55:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.655328798185941) internal successors, (730), 460 states have internal predecessors, (730), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:55:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 917 transitions. [2022-11-02 19:55:06,276 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 917 transitions. Word has length 110 [2022-11-02 19:55:06,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:06,276 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 917 transitions. [2022-11-02 19:55:06,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:06,277 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 917 transitions. [2022-11-02 19:55:06,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:55:06,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:06,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:06,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:55:06,281 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:06,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:06,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1310787858, now seen corresponding path program 1 times [2022-11-02 19:55:06,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:06,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140487804] [2022-11-02 19:55:06,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:06,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:55:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:55:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 19:55:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:55:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:55:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:55:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:55:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:55:06,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:06,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140487804] [2022-11-02 19:55:06,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140487804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:06,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:06,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:55:06,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932854667] [2022-11-02 19:55:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:06,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:55:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:55:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:55:06,856 INFO L87 Difference]: Start difference. First operand 561 states and 917 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:12,739 INFO L93 Difference]: Finished difference Result 1325 states and 2206 transitions. [2022-11-02 19:55:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:55:12,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-11-02 19:55:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:12,744 INFO L225 Difference]: With dead ends: 1325 [2022-11-02 19:55:12,744 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 19:55:12,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:55:12,748 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 1464 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:12,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 2268 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 19:55:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 19:55:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-02 19:55:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6439909297052153) internal successors, (725), 460 states have internal predecessors, (725), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:55:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 912 transitions. [2022-11-02 19:55:12,909 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 912 transitions. Word has length 111 [2022-11-02 19:55:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:12,909 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 912 transitions. [2022-11-02 19:55:12,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:12,910 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 912 transitions. [2022-11-02 19:55:12,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 19:55:12,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:12,914 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:12,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 19:55:12,914 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:12,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:12,915 INFO L85 PathProgramCache]: Analyzing trace with hash -998793954, now seen corresponding path program 1 times [2022-11-02 19:55:12,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:12,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823723396] [2022-11-02 19:55:12,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:12,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:55:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:55:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 19:55:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:55:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:55:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:55:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:55:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:55:13,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:13,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823723396] [2022-11-02 19:55:13,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823723396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:13,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:13,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:55:13,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546749392] [2022-11-02 19:55:13,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:13,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:55:13,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:55:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:55:13,482 INFO L87 Difference]: Start difference. First operand 561 states and 912 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:19,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:19,685 INFO L93 Difference]: Finished difference Result 1325 states and 2201 transitions. [2022-11-02 19:55:19,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:55:19,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-02 19:55:19,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:19,689 INFO L225 Difference]: With dead ends: 1325 [2022-11-02 19:55:19,689 INFO L226 Difference]: Without dead ends: 822 [2022-11-02 19:55:19,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:55:19,691 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 1473 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:19,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 2286 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-02 19:55:19,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-02 19:55:19,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-02 19:55:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6326530612244898) internal successors, (720), 460 states have internal predecessors, (720), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:55:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 907 transitions. [2022-11-02 19:55:19,868 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 907 transitions. Word has length 112 [2022-11-02 19:55:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:19,868 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 907 transitions. [2022-11-02 19:55:19,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:19,869 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 907 transitions. [2022-11-02 19:55:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 19:55:19,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:19,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:19,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 19:55:19,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:19,874 INFO L85 PathProgramCache]: Analyzing trace with hash -359403905, now seen corresponding path program 1 times [2022-11-02 19:55:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:19,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955285155] [2022-11-02 19:55:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:19,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:55:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:55:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 19:55:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:55:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:55:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:55:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:55:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:55:20,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:20,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955285155] [2022-11-02 19:55:20,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955285155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:20,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:20,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:55:20,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521809564] [2022-11-02 19:55:20,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:20,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:55:20,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:20,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:55:20,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:55:20,389 INFO L87 Difference]: Start difference. First operand 561 states and 907 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:26,495 INFO L93 Difference]: Finished difference Result 1340 states and 2216 transitions. [2022-11-02 19:55:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:55:26,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-02 19:55:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:26,500 INFO L225 Difference]: With dead ends: 1340 [2022-11-02 19:55:26,500 INFO L226 Difference]: Without dead ends: 843 [2022-11-02 19:55:26,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:55:26,503 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 1475 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:26,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 2280 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 19:55:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-02 19:55:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 563. [2022-11-02 19:55:26,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 443 states have (on average 1.6297968397291196) internal successors, (722), 462 states have internal predecessors, (722), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:55:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 909 transitions. [2022-11-02 19:55:26,694 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 909 transitions. Word has length 112 [2022-11-02 19:55:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:26,695 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 909 transitions. [2022-11-02 19:55:26,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:26,695 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 909 transitions. [2022-11-02 19:55:26,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-02 19:55:26,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:26,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:26,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 19:55:26,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1668161421, now seen corresponding path program 1 times [2022-11-02 19:55:26,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:26,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587029585] [2022-11-02 19:55:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:55:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:55:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 19:55:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:55:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:55:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:55:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:55:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:55:27,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:27,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587029585] [2022-11-02 19:55:27,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587029585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:27,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:27,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:55:27,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003673007] [2022-11-02 19:55:27,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:55:27,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:55:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:55:27,205 INFO L87 Difference]: Start difference. First operand 563 states and 909 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:32,949 INFO L93 Difference]: Finished difference Result 1331 states and 2202 transitions. [2022-11-02 19:55:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:55:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-02 19:55:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:32,955 INFO L225 Difference]: With dead ends: 1331 [2022-11-02 19:55:32,955 INFO L226 Difference]: Without dead ends: 826 [2022-11-02 19:55:32,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:55:32,958 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 1902 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:32,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 2228 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 19:55:32,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-11-02 19:55:33,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 563. [2022-11-02 19:55:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 443 states have (on average 1.618510158013544) internal successors, (717), 462 states have internal predecessors, (717), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:55:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 904 transitions. [2022-11-02 19:55:33,112 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 904 transitions. Word has length 113 [2022-11-02 19:55:33,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:33,112 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 904 transitions. [2022-11-02 19:55:33,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:33,113 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 904 transitions. [2022-11-02 19:55:33,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-02 19:55:33,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:33,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:33,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 19:55:33,117 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:33,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:33,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1882720560, now seen corresponding path program 1 times [2022-11-02 19:55:33,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:33,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7744019] [2022-11-02 19:55:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:33,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:55:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:55:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 19:55:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:55:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:55:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:55:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:55:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:55:33,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:33,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7744019] [2022-11-02 19:55:33,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7744019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:33,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:33,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:55:33,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405697131] [2022-11-02 19:55:33,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:33,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:55:33,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:55:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:55:33,646 INFO L87 Difference]: Start difference. First operand 563 states and 904 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:39,832 INFO L93 Difference]: Finished difference Result 1344 states and 2213 transitions. [2022-11-02 19:55:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:55:39,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-02 19:55:39,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:39,836 INFO L225 Difference]: With dead ends: 1344 [2022-11-02 19:55:39,836 INFO L226 Difference]: Without dead ends: 847 [2022-11-02 19:55:39,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:55:39,838 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 1481 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:39,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 2283 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-02 19:55:39,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-02 19:55:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 566. [2022-11-02 19:55:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 446 states have (on average 1.6143497757847534) internal successors, (720), 465 states have internal predecessors, (720), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:55:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 907 transitions. [2022-11-02 19:55:39,971 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 907 transitions. Word has length 113 [2022-11-02 19:55:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:39,971 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 907 transitions. [2022-11-02 19:55:39,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 907 transitions. [2022-11-02 19:55:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 19:55:39,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:39,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:39,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 19:55:39,976 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:39,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1600006979, now seen corresponding path program 1 times [2022-11-02 19:55:39,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:39,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813833008] [2022-11-02 19:55:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:39,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:55:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:55:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 19:55:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:55:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:55:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:55:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:55:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:55:40,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:40,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813833008] [2022-11-02 19:55:40,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813833008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:40,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:40,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 19:55:40,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309036416] [2022-11-02 19:55:40,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:40,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:55:40,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:40,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:55:40,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:55:40,562 INFO L87 Difference]: Start difference. First operand 566 states and 907 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 19:55:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:48,001 INFO L93 Difference]: Finished difference Result 1348 states and 2219 transitions. [2022-11-02 19:55:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:55:48,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-11-02 19:55:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:48,008 INFO L225 Difference]: With dead ends: 1348 [2022-11-02 19:55:48,008 INFO L226 Difference]: Without dead ends: 854 [2022-11-02 19:55:48,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-02 19:55:48,011 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 1915 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 4663 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 3739 SdHoareTripleChecker+Invalid, 5247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 4663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:48,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 3739 Invalid, 5247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [584 Valid, 4663 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-02 19:55:48,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-02 19:55:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 577. [2022-11-02 19:55:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 454 states have (on average 1.6101321585903083) internal successors, (731), 475 states have internal predecessors, (731), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-02 19:55:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 922 transitions. [2022-11-02 19:55:48,176 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 922 transitions. Word has length 114 [2022-11-02 19:55:48,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:48,176 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 922 transitions. [2022-11-02 19:55:48,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-02 19:55:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 922 transitions. [2022-11-02 19:55:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 19:55:48,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:48,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:48,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 19:55:48,180 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash -461208220, now seen corresponding path program 1 times [2022-11-02 19:55:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:48,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092619605] [2022-11-02 19:55:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:48,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:55:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:55:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 19:55:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:55:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:55:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:55:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:55:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:55:48,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:48,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092619605] [2022-11-02 19:55:48,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092619605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:48,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:48,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:55:48,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66167892] [2022-11-02 19:55:48,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:48,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:55:48,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:48,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:55:48,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:55:48,692 INFO L87 Difference]: Start difference. First operand 577 states and 922 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:54,715 INFO L93 Difference]: Finished difference Result 1371 states and 2250 transitions. [2022-11-02 19:55:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:55:54,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-02 19:55:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:54,722 INFO L225 Difference]: With dead ends: 1371 [2022-11-02 19:55:54,722 INFO L226 Difference]: Without dead ends: 871 [2022-11-02 19:55:54,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:55:54,725 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 1910 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:54,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 2224 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 19:55:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-02 19:55:54,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 581. [2022-11-02 19:55:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 458 states have (on average 1.6026200873362446) internal successors, (734), 479 states have internal predecessors, (734), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-02 19:55:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 925 transitions. [2022-11-02 19:55:54,902 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 925 transitions. Word has length 114 [2022-11-02 19:55:54,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:54,903 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 925 transitions. [2022-11-02 19:55:54,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:55:54,903 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 925 transitions. [2022-11-02 19:55:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 19:55:54,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:54,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:54,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 19:55:54,908 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:54,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1894424764, now seen corresponding path program 1 times [2022-11-02 19:55:54,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:54,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690359367] [2022-11-02 19:55:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:54,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:55:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:55:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 19:55:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:55:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:55:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:55:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:55:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:55:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:55:55,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:55,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690359367] [2022-11-02 19:55:55,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690359367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:55,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:55,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:55:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643083697] [2022-11-02 19:55:55,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:55,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:55:55,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:55,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:55:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:55:55,368 INFO L87 Difference]: Start difference. First operand 581 states and 925 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:56:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:01,188 INFO L93 Difference]: Finished difference Result 1413 states and 2293 transitions. [2022-11-02 19:56:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:56:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-02 19:56:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:01,193 INFO L225 Difference]: With dead ends: 1413 [2022-11-02 19:56:01,193 INFO L226 Difference]: Without dead ends: 830 [2022-11-02 19:56:01,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:56:01,196 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1827 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:01,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 2226 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 19:56:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-11-02 19:56:01,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 562. [2022-11-02 19:56:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 442 states have (on average 1.6108597285067874) internal successors, (712), 461 states have internal predecessors, (712), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:56:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 899 transitions. [2022-11-02 19:56:01,388 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 899 transitions. Word has length 114 [2022-11-02 19:56:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:01,389 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 899 transitions. [2022-11-02 19:56:01,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:56:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 899 transitions. [2022-11-02 19:56:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-02 19:56:01,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:01,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:01,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 19:56:01,393 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1056100469, now seen corresponding path program 1 times [2022-11-02 19:56:01,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:01,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392551623] [2022-11-02 19:56:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:56:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:56:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 19:56:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:56:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:56:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:56:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:56:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:56:01,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:01,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392551623] [2022-11-02 19:56:01,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392551623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:01,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:01,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412045814] [2022-11-02 19:56:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:01,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:01,917 INFO L87 Difference]: Start difference. First operand 562 states and 899 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:56:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:07,999 INFO L93 Difference]: Finished difference Result 1348 states and 2208 transitions. [2022-11-02 19:56:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:56:08,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-11-02 19:56:08,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:08,004 INFO L225 Difference]: With dead ends: 1348 [2022-11-02 19:56:08,004 INFO L226 Difference]: Without dead ends: 851 [2022-11-02 19:56:08,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:08,007 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 1873 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:08,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1954 Valid, 2202 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 19:56:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-02 19:56:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 567. [2022-11-02 19:56:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 447 states have (on average 1.604026845637584) internal successors, (717), 466 states have internal predecessors, (717), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-02 19:56:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 904 transitions. [2022-11-02 19:56:08,175 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 904 transitions. Word has length 115 [2022-11-02 19:56:08,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:08,175 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 904 transitions. [2022-11-02 19:56:08,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:56:08,175 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 904 transitions. [2022-11-02 19:56:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 19:56:08,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:08,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:08,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 19:56:08,179 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1773056601, now seen corresponding path program 1 times [2022-11-02 19:56:08,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:08,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341479521] [2022-11-02 19:56:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:08,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:56:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:56:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:56:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 19:56:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 19:56:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 19:56:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:56:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:56:08,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341479521] [2022-11-02 19:56:08,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341479521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:08,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:08,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 19:56:08,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559338290] [2022-11-02 19:56:08,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:08,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 19:56:08,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:08,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 19:56:08,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-02 19:56:08,954 INFO L87 Difference]: Start difference. First operand 567 states and 904 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-02 19:56:22,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:22,127 INFO L93 Difference]: Finished difference Result 1601 states and 2735 transitions. [2022-11-02 19:56:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 19:56:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-11-02 19:56:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:22,135 INFO L225 Difference]: With dead ends: 1601 [2022-11-02 19:56:22,135 INFO L226 Difference]: Without dead ends: 1112 [2022-11-02 19:56:22,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 19:56:22,139 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 3984 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 9697 mSolverCounterSat, 1998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3984 SdHoareTripleChecker+Valid, 4556 SdHoareTripleChecker+Invalid, 11695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1998 IncrementalHoareTripleChecker+Valid, 9697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:22,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3984 Valid, 4556 Invalid, 11695 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1998 Valid, 9697 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-02 19:56:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-02 19:56:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 576. [2022-11-02 19:56:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 454 states have (on average 1.5947136563876652) internal successors, (724), 472 states have internal predecessors, (724), 96 states have call successors, (96), 24 states have call predecessors, (96), 25 states have return successors, (110), 92 states have call predecessors, (110), 91 states have call successors, (110) [2022-11-02 19:56:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 930 transitions. [2022-11-02 19:56:22,408 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 930 transitions. Word has length 116 [2022-11-02 19:56:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:22,409 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 930 transitions. [2022-11-02 19:56:22,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-02 19:56:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 930 transitions. [2022-11-02 19:56:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-02 19:56:22,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:22,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:22,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 19:56:22,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:22,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash 673454971, now seen corresponding path program 1 times [2022-11-02 19:56:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:22,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110381161] [2022-11-02 19:56:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:22,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:56:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:56:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:56:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 19:56:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 19:56:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 19:56:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:23,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 19:56:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:56:23,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110381161] [2022-11-02 19:56:23,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110381161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:56:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819296681] [2022-11-02 19:56:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:23,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:23,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:23,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:23,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:56:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:23,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:56:23,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 19:56:23,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:23,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819296681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:23,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:56:23,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-11-02 19:56:23,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250310558] [2022-11-02 19:56:23,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:23,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:56:23,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:23,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:56:23,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-02 19:56:23,680 INFO L87 Difference]: Start difference. First operand 576 states and 930 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 19:56:24,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:24,478 INFO L93 Difference]: Finished difference Result 1084 states and 1812 transitions. [2022-11-02 19:56:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:56:24,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-02 19:56:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:24,484 INFO L225 Difference]: With dead ends: 1084 [2022-11-02 19:56:24,485 INFO L226 Difference]: Without dead ends: 586 [2022-11-02 19:56:24,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:56:24,488 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 850 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:24,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 2241 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 19:56:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-02 19:56:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2022-11-02 19:56:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 461 states have (on average 1.596529284164859) internal successors, (736), 479 states have internal predecessors, (736), 96 states have call successors, (96), 25 states have call predecessors, (96), 26 states have return successors, (105), 92 states have call predecessors, (105), 91 states have call successors, (105) [2022-11-02 19:56:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 937 transitions. [2022-11-02 19:56:24,716 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 937 transitions. Word has length 117 [2022-11-02 19:56:24,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:24,717 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 937 transitions. [2022-11-02 19:56:24,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 19:56:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 937 transitions. [2022-11-02 19:56:24,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 19:56:24,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:24,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:24,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 19:56:24,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 19:56:24,942 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:24,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1086742324, now seen corresponding path program 1 times [2022-11-02 19:56:24,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:24,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438341090] [2022-11-02 19:56:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:24,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:56:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:56:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:56:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 19:56:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 19:56:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 19:56:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:56:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 19:56:25,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:25,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438341090] [2022-11-02 19:56:25,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438341090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:56:25,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497151888] [2022-11-02 19:56:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:25,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:25,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:25,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:25,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:56:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:26,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:56:26,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 19:56:26,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:26,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497151888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:26,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:56:26,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-11-02 19:56:26,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507833788] [2022-11-02 19:56:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:26,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:56:26,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:26,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:56:26,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:26,237 INFO L87 Difference]: Start difference. First operand 584 states and 937 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 19:56:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:27,013 INFO L93 Difference]: Finished difference Result 1100 states and 1810 transitions. [2022-11-02 19:56:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:56:27,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-11-02 19:56:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:27,020 INFO L225 Difference]: With dead ends: 1100 [2022-11-02 19:56:27,020 INFO L226 Difference]: Without dead ends: 594 [2022-11-02 19:56:27,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-02 19:56:27,023 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 837 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:27,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 2241 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 19:56:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-02 19:56:27,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2022-11-02 19:56:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 469 states have (on average 1.5970149253731343) internal successors, (749), 488 states have internal predecessors, (749), 96 states have call successors, (96), 26 states have call predecessors, (96), 28 states have return successors, (106), 92 states have call predecessors, (106), 91 states have call successors, (106) [2022-11-02 19:56:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 951 transitions. [2022-11-02 19:56:27,260 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 951 transitions. Word has length 122 [2022-11-02 19:56:27,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:27,261 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 951 transitions. [2022-11-02 19:56:27,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-02 19:56:27,261 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 951 transitions. [2022-11-02 19:56:27,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 19:56:27,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:27,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:27,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:27,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c465281a-4d69-4839-b48d-2ba51a9e6dcf/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:27,479 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash -195960905, now seen corresponding path program 1 times [2022-11-02 19:56:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:27,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412315395] [2022-11-02 19:56:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:27,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:56:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:56:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:27,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:56:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 19:56:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 19:56:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 19:56:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:56:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 19:56:28,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:28,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412315395] [2022-11-02 19:56:28,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412315395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:28,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:28,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 19:56:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765058629] [2022-11-02 19:56:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:28,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 19:56:28,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 19:56:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-02 19:56:28,280 INFO L87 Difference]: Start difference. First operand 594 states and 951 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-02 19:56:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:54,629 INFO L93 Difference]: Finished difference Result 2633 states and 4593 transitions. [2022-11-02 19:56:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 19:56:54,630 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 122 [2022-11-02 19:56:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:54,649 INFO L225 Difference]: With dead ends: 2633 [2022-11-02 19:56:54,649 INFO L226 Difference]: Without dead ends: 2117 [2022-11-02 19:56:54,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-11-02 19:56:54,655 INFO L413 NwaCegarLoop]: 2089 mSDtfsCounter, 7486 mSDsluCounter, 7763 mSDsCounter, 0 mSdLazyCounter, 19013 mSolverCounterSat, 3847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7486 SdHoareTripleChecker+Valid, 9852 SdHoareTripleChecker+Invalid, 22860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3847 IncrementalHoareTripleChecker+Valid, 19013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:54,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7486 Valid, 9852 Invalid, 22860 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3847 Valid, 19013 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2022-11-02 19:56:54,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2022-11-02 19:56:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1406. [2022-11-02 19:56:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1036 states have (on average 1.6042471042471043) internal successors, (1662), 1097 states have internal predecessors, (1662), 305 states have call successors, (305), 48 states have call predecessors, (305), 64 states have return successors, (405), 308 states have call predecessors, (405), 300 states have call successors, (405) [2022-11-02 19:56:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2372 transitions. [2022-11-02 19:56:55,505 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2372 transitions. Word has length 122 [2022-11-02 19:56:55,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:55,505 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 2372 transitions. [2022-11-02 19:56:55,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-02 19:56:55,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2372 transitions. [2022-11-02 19:56:55,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 19:56:55,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:55,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:55,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 19:56:55,512 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1421832665, now seen corresponding path program 1 times [2022-11-02 19:56:55,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:55,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682550677] [2022-11-02 19:56:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:56:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:55,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:56:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:56:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 19:56:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 19:56:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:56:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:56:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 19:56:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 19:56:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:56,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682550677] [2022-11-02 19:56:56,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682550677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:56,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:56,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 19:56:56,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473780711] [2022-11-02 19:56:56,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:56,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:56:56,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:56,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:56:56,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:56:56,517 INFO L87 Difference]: Start difference. First operand 1406 states and 2372 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-02 19:57:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:25,580 INFO L93 Difference]: Finished difference Result 5239 states and 9599 transitions. [2022-11-02 19:57:25,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 19:57:25,581 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 124 [2022-11-02 19:57:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:25,621 INFO L225 Difference]: With dead ends: 5239 [2022-11-02 19:57:25,621 INFO L226 Difference]: Without dead ends: 3919 [2022-11-02 19:57:25,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 19:57:25,636 INFO L413 NwaCegarLoop]: 2240 mSDtfsCounter, 6409 mSDsluCounter, 8875 mSDsCounter, 0 mSdLazyCounter, 20990 mSolverCounterSat, 3339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6415 SdHoareTripleChecker+Valid, 11115 SdHoareTripleChecker+Invalid, 24329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3339 IncrementalHoareTripleChecker+Valid, 20990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:25,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6415 Valid, 11115 Invalid, 24329 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3339 Valid, 20990 Invalid, 0 Unknown, 0 Unchecked, 21.6s Time] [2022-11-02 19:57:25,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-11-02 19:57:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 2172. [2022-11-02 19:57:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1601 states have (on average 1.6108682073703935) internal successors, (2579), 1683 states have internal predecessors, (2579), 473 states have call successors, (473), 70 states have call predecessors, (473), 97 states have return successors, (694), 482 states have call predecessors, (694), 468 states have call successors, (694) [2022-11-02 19:57:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3746 transitions. [2022-11-02 19:57:27,156 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3746 transitions. Word has length 124 [2022-11-02 19:57:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:27,156 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3746 transitions. [2022-11-02 19:57:27,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-02 19:57:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3746 transitions. [2022-11-02 19:57:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 19:57:27,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:27,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:27,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 19:57:27,165 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:27,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:27,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1750775653, now seen corresponding path program 1 times [2022-11-02 19:57:27,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:27,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067782426] [2022-11-02 19:57:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:27,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 19:57:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:57:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:57:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:57:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:57:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:57:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:57:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 19:57:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 19:57:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:57:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:57:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 19:57:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 19:57:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 19:57:27,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:27,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067782426] [2022-11-02 19:57:27,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067782426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:27,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:27,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:57:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525456508] [2022-11-02 19:57:27,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:27,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:57:27,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:57:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:57:27,725 INFO L87 Difference]: Start difference. First operand 2172 states and 3746 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-02 19:57:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:35,192 INFO L93 Difference]: Finished difference Result 4299 states and 7543 transitions. [2022-11-02 19:57:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:57:35,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-11-02 19:57:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:35,215 INFO L225 Difference]: With dead ends: 4299 [2022-11-02 19:57:35,216 INFO L226 Difference]: Without dead ends: 2937 [2022-11-02 19:57:35,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:57:35,225 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 1423 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:35,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 2346 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 19:57:35,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states.