./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ --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 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 --- 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-dbf71c6-m [2022-10-17 10:57:01,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:57:01,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:57:01,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:57:01,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:57:01,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:57:01,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:57:01,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:57:01,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:57:01,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:57:01,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:57:01,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:57:01,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:57:01,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:57:01,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:57:01,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:57:01,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:57:01,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:57:01,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:57:01,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:57:02,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:57:02,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:57:02,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:57:02,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:57:02,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:57:02,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:57:02,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:57:02,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:57:02,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:57:02,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:57:02,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:57:02,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:57:02,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:57:02,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:57:02,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:57:02,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:57:02,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:57:02,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:57:02,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:57:02,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:57:02,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:57:02,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:57:02,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:57:02,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:57:02,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:57:02,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:57:02,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:57:02,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:57:02,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:57:02,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:57:02,085 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:57:02,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:57:02,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:57:02,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:57:02,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:57:02,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:57:02,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:57:02,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:57:02,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:57:02,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:57:02,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:57:02,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:57:02,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:57:02,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:57:02,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:57:02,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:57:02,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:02,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:57:02,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:57:02,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:57:02,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:57:02,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:57:02,093 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:57:02,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:57:02,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:57:02,094 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_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 [2022-10-17 10:57:02,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:57:02,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:57:02,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:57:02,466 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:57:02,466 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:57:02,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2022-10-17 10:57:02,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/data/d191d00d0/bbfcc35e8f6e460e8878376bdd070cb8/FLAGa5a19a92e [2022-10-17 10:57:03,211 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:57:03,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2022-10-17 10:57:03,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/data/d191d00d0/bbfcc35e8f6e460e8878376bdd070cb8/FLAGa5a19a92e [2022-10-17 10:57:03,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/data/d191d00d0/bbfcc35e8f6e460e8878376bdd070cb8 [2022-10-17 10:57:03,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:57:03,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:57:03,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:03,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:57:03,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:57:03,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:03" (1/1) ... [2022-10-17 10:57:03,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586c7daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:03, skipping insertion in model container [2022-10-17 10:57:03,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:03" (1/1) ... [2022-10-17 10:57:03,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:57:03,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:57:03,733 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_37770701-1a96-40f1-823b-ed1c89dceaea/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-10-17 10:57:04,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:04,158 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:57:04,170 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_37770701-1a96-40f1-823b-ed1c89dceaea/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-10-17 10:57:04,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:04,355 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:57:04,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04 WrapperNode [2022-10-17 10:57:04,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:04,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:04,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:57:04,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:57:04,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,513 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 806 [2022-10-17 10:57:04,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:04,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:57:04,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:57:04,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:57:04,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:57:04,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:57:04,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:57:04,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:57:04,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (1/1) ... [2022-10-17 10:57:04,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:04,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:04,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:04,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:57:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-10-17 10:57:04,708 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-10-17 10:57:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:57:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-10-17 10:57:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-10-17 10:57:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-10-17 10:57:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-10-17 10:57:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-10-17 10:57:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-10-17 10:57:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-10-17 10:57:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-10-17 10:57:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-10-17 10:57:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-10-17 10:57:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 10:57:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 10:57:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-10-17 10:57:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-10-17 10:57:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-10-17 10:57:04,711 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-10-17 10:57:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-10-17 10:57:04,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-10-17 10:57:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-10-17 10:57:04,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-10-17 10:57:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-10-17 10:57:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-10-17 10:57:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-10-17 10:57:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-10-17 10:57:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-10-17 10:57:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-10-17 10:57:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-10-17 10:57:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-10-17 10:57:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-10-17 10:57:04,713 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-10-17 10:57:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-10-17 10:57:04,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-10-17 10:57:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-10-17 10:57:04,713 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-10-17 10:57:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:57:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2022-10-17 10:57:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2022-10-17 10:57:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-10-17 10:57:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-10-17 10:57:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-10-17 10:57:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-10-17 10:57:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-10-17 10:57:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-10-17 10:57:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:57:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:57:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-10-17 10:57:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-10-17 10:57:04,886 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:57:04,889 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:57:06,051 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:57:06,064 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:57:06,064 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:57:06,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:06 BoogieIcfgContainer [2022-10-17 10:57:06,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:57:06,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:57:06,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:57:06,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:57:06,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:57:03" (1/3) ... [2022-10-17 10:57:06,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564f8763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:57:06, skipping insertion in model container [2022-10-17 10:57:06,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:04" (2/3) ... [2022-10-17 10:57:06,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564f8763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:57:06, skipping insertion in model container [2022-10-17 10:57:06,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:06" (3/3) ... [2022-10-17 10:57:06,077 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2022-10-17 10:57:06,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:57:06,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:57:06,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:57:06,173 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;@285634a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:57:06,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:57:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 548 states, 429 states have (on average 1.7016317016317015) internal successors, (730), 452 states have internal predecessors, (730), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2022-10-17 10:57:06,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-17 10:57:06,203 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:06,204 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] [2022-10-17 10:57:06,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:06,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash -583983565, now seen corresponding path program 1 times [2022-10-17 10:57:06,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:06,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024771805] [2022-10-17 10:57:06,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:06,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:06,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:07,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:07,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:07,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-17 10:57:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:57:07,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:07,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024771805] [2022-10-17 10:57:07,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024771805] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:07,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719737237] [2022-10-17 10:57:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:07,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:07,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:07,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:57:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:07,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:57:07,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:57:07,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:07,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719737237] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:07,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:07,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2022-10-17 10:57:07,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055741407] [2022-10-17 10:57:07,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:08,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:57:08,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:08,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:57:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:57:08,037 INFO L87 Difference]: Start difference. First operand has 548 states, 429 states have (on average 1.7016317016317015) internal successors, (730), 452 states have internal predecessors, (730), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-17 10:57:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:08,120 INFO L93 Difference]: Finished difference Result 569 states and 948 transitions. [2022-10-17 10:57:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:57:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-10-17 10:57:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:08,150 INFO L225 Difference]: With dead ends: 569 [2022-10-17 10:57:08,150 INFO L226 Difference]: Without dead ends: 540 [2022-10-17 10:57:08,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:57:08,157 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:08,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:08,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-10-17 10:57:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-10-17 10:57:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 423 states have (on average 1.6997635933806146) internal successors, (719), 444 states have internal predecessors, (719), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-10-17 10:57:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 902 transitions. [2022-10-17 10:57:08,304 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 902 transitions. Word has length 79 [2022-10-17 10:57:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:08,306 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 902 transitions. [2022-10-17 10:57:08,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-10-17 10:57:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 902 transitions. [2022-10-17 10:57:08,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-17 10:57:08,324 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:08,325 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] [2022-10-17 10:57:08,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:08,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:57:08,545 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:08,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:08,545 INFO L85 PathProgramCache]: Analyzing trace with hash 295773415, now seen corresponding path program 1 times [2022-10-17 10:57:08,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:08,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870594613] [2022-10-17 10:57:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:08,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:57:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:57:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-17 10:57:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:57:09,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:09,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870594613] [2022-10-17 10:57:09,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870594613] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:09,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978171637] [2022-10-17 10:57:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:09,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:09,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:09,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:09,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:57:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:09,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:09,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:57:09,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:09,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978171637] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:09,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:09,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-17 10:57:09,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390831318] [2022-10-17 10:57:09,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:09,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:09,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:09,772 INFO L87 Difference]: Start difference. First operand 540 states and 902 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:09,929 INFO L93 Difference]: Finished difference Result 1071 states and 1796 transitions. [2022-10-17 10:57:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:57:09,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2022-10-17 10:57:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:09,940 INFO L225 Difference]: With dead ends: 1071 [2022-10-17 10:57:09,940 INFO L226 Difference]: Without dead ends: 540 [2022-10-17 10:57:09,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:09,952 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 14 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:09,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2657 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:09,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-10-17 10:57:10,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-10-17 10:57:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 423 states have (on average 1.6973995271867612) internal successors, (718), 444 states have internal predecessors, (718), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-10-17 10:57:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 901 transitions. [2022-10-17 10:57:10,051 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 901 transitions. Word has length 81 [2022-10-17 10:57:10,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:10,052 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 901 transitions. [2022-10-17 10:57:10,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 901 transitions. [2022-10-17 10:57:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-17 10:57:10,055 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:10,055 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] [2022-10-17 10:57:10,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:10,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1190651257, now seen corresponding path program 1 times [2022-10-17 10:57:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:10,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207278824] [2022-10-17 10:57:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:57:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:57:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:57:10,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:10,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207278824] [2022-10-17 10:57:10,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207278824] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:10,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491137975] [2022-10-17 10:57:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:10,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:10,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:10,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:10,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:57:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:11,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:57:11,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:11,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491137975] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:11,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:11,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-17 10:57:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508162439] [2022-10-17 10:57:11,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:11,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:11,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:11,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:11,347 INFO L87 Difference]: Start difference. First operand 540 states and 901 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:11,440 INFO L93 Difference]: Finished difference Result 1071 states and 1794 transitions. [2022-10-17 10:57:11,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:57:11,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-10-17 10:57:11,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:11,451 INFO L225 Difference]: With dead ends: 1071 [2022-10-17 10:57:11,451 INFO L226 Difference]: Without dead ends: 540 [2022-10-17 10:57:11,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:11,459 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 12 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:11,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2657 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:11,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-10-17 10:57:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-10-17 10:57:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 423 states have (on average 1.6950354609929077) internal successors, (717), 444 states have internal predecessors, (717), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-10-17 10:57:11,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 900 transitions. [2022-10-17 10:57:11,509 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 900 transitions. Word has length 83 [2022-10-17 10:57:11,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:11,509 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 900 transitions. [2022-10-17 10:57:11,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 900 transitions. [2022-10-17 10:57:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-17 10:57:11,513 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:11,513 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] [2022-10-17 10:57:11,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:11,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash -756292569, now seen corresponding path program 1 times [2022-10-17 10:57:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:11,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261313695] [2022-10-17 10:57:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:11,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-17 10:57:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-17 10:57:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:57:12,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:12,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261313695] [2022-10-17 10:57:12,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261313695] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:12,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708920356] [2022-10-17 10:57:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:12,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:12,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:12,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:12,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:57:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:12,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:12,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:57:12,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:12,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708920356] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:12,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:12,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-17 10:57:12,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152238764] [2022-10-17 10:57:12,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:12,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:12,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:12,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:12,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:12,729 INFO L87 Difference]: Start difference. First operand 540 states and 900 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:12,816 INFO L93 Difference]: Finished difference Result 1078 states and 1801 transitions. [2022-10-17 10:57:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:12,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-10-17 10:57:12,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:12,822 INFO L225 Difference]: With dead ends: 1078 [2022-10-17 10:57:12,823 INFO L226 Difference]: Without dead ends: 549 [2022-10-17 10:57:12,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:12,827 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 20 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:12,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2657 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-10-17 10:57:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-10-17 10:57:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 431 states have (on average 1.691415313225058) internal successors, (729), 452 states have internal predecessors, (729), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-10-17 10:57:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 912 transitions. [2022-10-17 10:57:12,857 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 912 transitions. Word has length 85 [2022-10-17 10:57:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:12,858 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 912 transitions. [2022-10-17 10:57:12,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 912 transitions. [2022-10-17 10:57:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-17 10:57:12,860 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:12,861 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] [2022-10-17 10:57:12,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:13,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:13,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:13,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1855735790, now seen corresponding path program 1 times [2022-10-17 10:57:13,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:13,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684250623] [2022-10-17 10:57:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:57:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:57:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-17 10:57:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:57:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:13,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684250623] [2022-10-17 10:57:13,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684250623] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:13,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395268186] [2022-10-17 10:57:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:13,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:13,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:13,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:13,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:57:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:13,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:13,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:57:13,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:13,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395268186] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:13,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:13,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-17 10:57:13,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115019706] [2022-10-17 10:57:13,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:13,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:13,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:13,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:13,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:13,990 INFO L87 Difference]: Start difference. First operand 549 states and 912 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:14,079 INFO L93 Difference]: Finished difference Result 1080 states and 1802 transitions. [2022-10-17 10:57:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:14,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-10-17 10:57:14,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:14,085 INFO L225 Difference]: With dead ends: 1080 [2022-10-17 10:57:14,085 INFO L226 Difference]: Without dead ends: 549 [2022-10-17 10:57:14,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:14,089 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 18 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:14,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2657 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-10-17 10:57:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-10-17 10:57:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 431 states have (on average 1.6890951276102089) internal successors, (728), 452 states have internal predecessors, (728), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-10-17 10:57:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 911 transitions. [2022-10-17 10:57:14,118 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 911 transitions. Word has length 86 [2022-10-17 10:57:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:14,119 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 911 transitions. [2022-10-17 10:57:14,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 911 transitions. [2022-10-17 10:57:14,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-17 10:57:14,122 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:14,122 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] [2022-10-17 10:57:14,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:14,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:14,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:14,348 INFO L85 PathProgramCache]: Analyzing trace with hash 781528715, now seen corresponding path program 1 times [2022-10-17 10:57:14,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:14,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507337166] [2022-10-17 10:57:14,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:14,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-17 10:57:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:57:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:57:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:57:14,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507337166] [2022-10-17 10:57:14,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507337166] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:14,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562836046] [2022-10-17 10:57:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:14,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:14,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:14,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:14,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:57:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:15,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:57:15,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:15,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562836046] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:15,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:15,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-17 10:57:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073886627] [2022-10-17 10:57:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:15,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:15,244 INFO L87 Difference]: Start difference. First operand 549 states and 911 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:15,316 INFO L93 Difference]: Finished difference Result 1080 states and 1801 transitions. [2022-10-17 10:57:15,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:15,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2022-10-17 10:57:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:15,323 INFO L225 Difference]: With dead ends: 1080 [2022-10-17 10:57:15,323 INFO L226 Difference]: Without dead ends: 549 [2022-10-17 10:57:15,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:15,328 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 17 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:15,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2657 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-10-17 10:57:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-10-17 10:57:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 431 states have (on average 1.6867749419953597) internal successors, (727), 452 states have internal predecessors, (727), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-10-17 10:57:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 910 transitions. [2022-10-17 10:57:15,357 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 910 transitions. Word has length 87 [2022-10-17 10:57:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:15,357 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 910 transitions. [2022-10-17 10:57:15,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 910 transitions. [2022-10-17 10:57:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-17 10:57:15,359 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:15,360 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] [2022-10-17 10:57:15,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:15,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:57:15,573 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1002351562, now seen corresponding path program 1 times [2022-10-17 10:57:15,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:15,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196488936] [2022-10-17 10:57:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:15,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:15,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:57:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:57:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:57:16,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:16,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196488936] [2022-10-17 10:57:16,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196488936] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:16,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715981330] [2022-10-17 10:57:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:16,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:16,274 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:16,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:57:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:16,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:57:16,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:16,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:16,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715981330] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:16,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:16,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-10-17 10:57:16,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049045255] [2022-10-17 10:57:16,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:16,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:57:16,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:16,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:57:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:57:16,742 INFO L87 Difference]: Start difference. First operand 549 states and 910 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:16,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:16,889 INFO L93 Difference]: Finished difference Result 1099 states and 1831 transitions. [2022-10-17 10:57:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:57:16,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2022-10-17 10:57:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:16,897 INFO L225 Difference]: With dead ends: 1099 [2022-10-17 10:57:16,898 INFO L226 Difference]: Without dead ends: 572 [2022-10-17 10:57:16,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:57:16,902 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 148 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5221 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:16,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5221 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:16,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-10-17 10:57:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 568. [2022-10-17 10:57:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 447 states have (on average 1.6845637583892616) internal successors, (753), 470 states have internal predecessors, (753), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2022-10-17 10:57:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 941 transitions. [2022-10-17 10:57:16,942 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 941 transitions. Word has length 88 [2022-10-17 10:57:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:16,943 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 941 transitions. [2022-10-17 10:57:16,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:16,943 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 941 transitions. [2022-10-17 10:57:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-17 10:57:16,947 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:16,948 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] [2022-10-17 10:57:16,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:17,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 10:57:17,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1486026889, now seen corresponding path program 1 times [2022-10-17 10:57:17,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:17,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004199761] [2022-10-17 10:57:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:17,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:57:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:57:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:57:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:17,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004199761] [2022-10-17 10:57:17,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004199761] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:17,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623460966] [2022-10-17 10:57:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:17,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:17,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:17,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:17,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:57:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:18,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:18,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:18,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623460966] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:18,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:18,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-17 10:57:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043439125] [2022-10-17 10:57:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:18,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:18,083 INFO L87 Difference]: Start difference. First operand 568 states and 941 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:18,227 INFO L93 Difference]: Finished difference Result 1140 states and 1905 transitions. [2022-10-17 10:57:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:57:18,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2022-10-17 10:57:18,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:18,233 INFO L225 Difference]: With dead ends: 1140 [2022-10-17 10:57:18,233 INFO L226 Difference]: Without dead ends: 568 [2022-10-17 10:57:18,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:18,237 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 135 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:18,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2474 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-10-17 10:57:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2022-10-17 10:57:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 447 states have (on average 1.6733780760626398) internal successors, (748), 470 states have internal predecessors, (748), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2022-10-17 10:57:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 936 transitions. [2022-10-17 10:57:18,266 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 936 transitions. Word has length 88 [2022-10-17 10:57:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:18,266 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 936 transitions. [2022-10-17 10:57:18,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 936 transitions. [2022-10-17 10:57:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-10-17 10:57:18,269 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:18,269 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] [2022-10-17 10:57:18,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:18,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:18,483 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash -931895993, now seen corresponding path program 1 times [2022-10-17 10:57:18,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:18,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665767178] [2022-10-17 10:57:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:18,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-17 10:57:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:57:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:57:18,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:18,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665767178] [2022-10-17 10:57:18,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665767178] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:18,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717983266] [2022-10-17 10:57:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:18,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:18,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:18,956 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:18,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:57:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:19,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:19,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:19,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717983266] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:19,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:19,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-17 10:57:19,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22472822] [2022-10-17 10:57:19,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:19,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:19,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:19,352 INFO L87 Difference]: Start difference. First operand 568 states and 936 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:19,489 INFO L93 Difference]: Finished difference Result 1140 states and 1895 transitions. [2022-10-17 10:57:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:57:19,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2022-10-17 10:57:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:19,496 INFO L225 Difference]: With dead ends: 1140 [2022-10-17 10:57:19,496 INFO L226 Difference]: Without dead ends: 568 [2022-10-17 10:57:19,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:19,502 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 129 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:19,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2474 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-10-17 10:57:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2022-10-17 10:57:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 447 states have (on average 1.662192393736018) internal successors, (743), 470 states have internal predecessors, (743), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2022-10-17 10:57:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 931 transitions. [2022-10-17 10:57:19,529 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 931 transitions. Word has length 90 [2022-10-17 10:57:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:19,529 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 931 transitions. [2022-10-17 10:57:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 931 transitions. [2022-10-17 10:57:19,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-17 10:57:19,532 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:19,532 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-10-17 10:57:19,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:19,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-17 10:57:19,758 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:19,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash 570563991, now seen corresponding path program 1 times [2022-10-17 10:57:19,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:19,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199959905] [2022-10-17 10:57:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:19,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:57:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:57:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:57:20,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:20,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199959905] [2022-10-17 10:57:20,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199959905] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:20,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862906320] [2022-10-17 10:57:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:20,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:20,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:20,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:20,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 10:57:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:20,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:20,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:20,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862906320] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:20,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:20,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-17 10:57:20,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752539717] [2022-10-17 10:57:20,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:20,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:20,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:20,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:20,625 INFO L87 Difference]: Start difference. First operand 568 states and 931 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:20,791 INFO L93 Difference]: Finished difference Result 1176 states and 1943 transitions. [2022-10-17 10:57:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:20,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2022-10-17 10:57:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:20,798 INFO L225 Difference]: With dead ends: 1176 [2022-10-17 10:57:20,798 INFO L226 Difference]: Without dead ends: 634 [2022-10-17 10:57:20,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:20,802 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 179 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:20,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2484 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:20,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-10-17 10:57:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 619. [2022-10-17 10:57:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 497 states have (on average 1.6659959758551308) internal successors, (828), 520 states have internal predecessors, (828), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2022-10-17 10:57:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1015 transitions. [2022-10-17 10:57:20,843 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1015 transitions. Word has length 92 [2022-10-17 10:57:20,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:20,843 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1015 transitions. [2022-10-17 10:57:20,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1015 transitions. [2022-10-17 10:57:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 10:57:20,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:20,848 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] [2022-10-17 10:57:20,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:21,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:21,067 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:21,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1295693399, now seen corresponding path program 1 times [2022-10-17 10:57:21,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:21,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607942518] [2022-10-17 10:57:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:21,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:57:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:57:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:57:21,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:21,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607942518] [2022-10-17 10:57:21,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607942518] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:21,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076209089] [2022-10-17 10:57:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:21,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:21,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:21,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:21,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-17 10:57:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:22,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:57:22,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:22,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:22,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076209089] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:22,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:22,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-10-17 10:57:22,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040819315] [2022-10-17 10:57:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:22,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:57:22,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:22,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:57:22,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:22,174 INFO L87 Difference]: Start difference. First operand 619 states and 1015 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:22,366 INFO L93 Difference]: Finished difference Result 1168 states and 1923 transitions. [2022-10-17 10:57:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:57:22,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-10-17 10:57:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:22,373 INFO L225 Difference]: With dead ends: 1168 [2022-10-17 10:57:22,373 INFO L226 Difference]: Without dead ends: 641 [2022-10-17 10:57:22,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:57:22,379 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 177 mSDsluCounter, 5107 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:22,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5976 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-10-17 10:57:22,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 619. [2022-10-17 10:57:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 497 states have (on average 1.6659959758551308) internal successors, (828), 520 states have internal predecessors, (828), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2022-10-17 10:57:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1015 transitions. [2022-10-17 10:57:22,412 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1015 transitions. Word has length 93 [2022-10-17 10:57:22,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:22,412 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1015 transitions. [2022-10-17 10:57:22,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1015 transitions. [2022-10-17 10:57:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 10:57:22,415 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:22,415 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] [2022-10-17 10:57:22,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:22,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:22,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:22,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash 570099401, now seen corresponding path program 1 times [2022-10-17 10:57:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:22,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806716606] [2022-10-17 10:57:22,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:22,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:22,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:22,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:22,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:57:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:57:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:57:23,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:23,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806716606] [2022-10-17 10:57:23,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806716606] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:23,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835009633] [2022-10-17 10:57:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:23,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:23,130 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:23,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-17 10:57:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:23,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:23,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:23,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:23,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835009633] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:23,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:23,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-10-17 10:57:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196830911] [2022-10-17 10:57:23,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:23,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:57:23,502 INFO L87 Difference]: Start difference. First operand 619 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:23,659 INFO L93 Difference]: Finished difference Result 1176 states and 1941 transitions. [2022-10-17 10:57:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2022-10-17 10:57:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:23,666 INFO L225 Difference]: With dead ends: 1176 [2022-10-17 10:57:23,666 INFO L226 Difference]: Without dead ends: 619 [2022-10-17 10:57:23,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:57:23,670 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 173 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:23,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2484 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-10-17 10:57:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2022-10-17 10:57:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 497 states have (on average 1.6559356136820926) internal successors, (823), 520 states have internal predecessors, (823), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2022-10-17 10:57:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1010 transitions. [2022-10-17 10:57:23,697 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1010 transitions. Word has length 93 [2022-10-17 10:57:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:23,698 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1010 transitions. [2022-10-17 10:57:23,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:23,699 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1010 transitions. [2022-10-17 10:57:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 10:57:23,701 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:23,701 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] [2022-10-17 10:57:23,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:23,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:23,915 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:23,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:23,915 INFO L85 PathProgramCache]: Analyzing trace with hash -186878200, now seen corresponding path program 1 times [2022-10-17 10:57:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:23,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304624181] [2022-10-17 10:57:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:23,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:57:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:57:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:57:24,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:24,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304624181] [2022-10-17 10:57:24,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304624181] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:24,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671291968] [2022-10-17 10:57:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:24,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:24,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:24,474 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:24,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-17 10:57:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:24,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:57:24,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:57:24,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:24,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671291968] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:24,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:24,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-10-17 10:57:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539719714] [2022-10-17 10:57:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:24,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:57:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:57:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:57:24,890 INFO L87 Difference]: Start difference. First operand 619 states and 1010 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:25,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:25,030 INFO L93 Difference]: Finished difference Result 1103 states and 1815 transitions. [2022-10-17 10:57:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:57:25,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-10-17 10:57:25,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:25,036 INFO L225 Difference]: With dead ends: 1103 [2022-10-17 10:57:25,036 INFO L226 Difference]: Without dead ends: 643 [2022-10-17 10:57:25,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:25,041 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 134 mSDsluCounter, 4299 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:25,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5180 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:25,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-10-17 10:57:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 638. [2022-10-17 10:57:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 513 states have (on average 1.654970760233918) internal successors, (849), 538 states have internal predecessors, (849), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-10-17 10:57:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1040 transitions. [2022-10-17 10:57:25,070 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1040 transitions. Word has length 93 [2022-10-17 10:57:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:25,070 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1040 transitions. [2022-10-17 10:57:25,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1040 transitions. [2022-10-17 10:57:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 10:57:25,074 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:25,074 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] [2022-10-17 10:57:25,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-17 10:57:25,287 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:25,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:25,287 INFO L85 PathProgramCache]: Analyzing trace with hash -841274157, now seen corresponding path program 1 times [2022-10-17 10:57:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:25,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259312768] [2022-10-17 10:57:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:25,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:57:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:57:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:57:25,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:25,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259312768] [2022-10-17 10:57:25,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259312768] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:25,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752314336] [2022-10-17 10:57:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:25,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:25,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:25,837 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:25,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-17 10:57:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:57:26,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:57:26,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:26,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752314336] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:26,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:26,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-10-17 10:57:26,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908710178] [2022-10-17 10:57:26,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:26,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:57:26,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:26,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:57:26,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:57:26,251 INFO L87 Difference]: Start difference. First operand 638 states and 1040 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:26,356 INFO L93 Difference]: Finished difference Result 1133 states and 1866 transitions. [2022-10-17 10:57:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:57:26,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-10-17 10:57:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:26,363 INFO L225 Difference]: With dead ends: 1133 [2022-10-17 10:57:26,363 INFO L226 Difference]: Without dead ends: 673 [2022-10-17 10:57:26,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:26,367 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 143 mSDsluCounter, 4289 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5170 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:26,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5170 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-10-17 10:57:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 638. [2022-10-17 10:57:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 513 states have (on average 1.654970760233918) internal successors, (849), 538 states have internal predecessors, (849), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-10-17 10:57:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1040 transitions. [2022-10-17 10:57:26,398 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1040 transitions. Word has length 94 [2022-10-17 10:57:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:26,398 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1040 transitions. [2022-10-17 10:57:26,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1040 transitions. [2022-10-17 10:57:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 10:57:26,402 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:26,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-10-17 10:57:26,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:26,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 10:57:26,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1297394003, now seen corresponding path program 1 times [2022-10-17 10:57:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:26,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604448294] [2022-10-17 10:57:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:26,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:57:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:26,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:57:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 10:57:27,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:27,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604448294] [2022-10-17 10:57:27,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604448294] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:27,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017225057] [2022-10-17 10:57:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:27,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:27,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:27,114 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:27,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-17 10:57:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:27,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:57:27,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:57:27,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:27,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017225057] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:27,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:27,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-10-17 10:57:27,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293516967] [2022-10-17 10:57:27,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:27,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:57:27,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:57:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:27,501 INFO L87 Difference]: Start difference. First operand 638 states and 1040 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:27,661 INFO L93 Difference]: Finished difference Result 1118 states and 1840 transitions. [2022-10-17 10:57:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:57:27,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-10-17 10:57:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:27,667 INFO L225 Difference]: With dead ends: 1118 [2022-10-17 10:57:27,667 INFO L226 Difference]: Without dead ends: 658 [2022-10-17 10:57:27,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:57:27,672 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 177 mSDsluCounter, 5113 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5984 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:27,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5984 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-10-17 10:57:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 638. [2022-10-17 10:57:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 513 states have (on average 1.654970760233918) internal successors, (849), 538 states have internal predecessors, (849), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-10-17 10:57:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1040 transitions. [2022-10-17 10:57:27,701 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1040 transitions. Word has length 94 [2022-10-17 10:57:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:27,701 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1040 transitions. [2022-10-17 10:57:27,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1040 transitions. [2022-10-17 10:57:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 10:57:27,704 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:27,705 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] [2022-10-17 10:57:27,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:27,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-17 10:57:27,930 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:27,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2023274445, now seen corresponding path program 1 times [2022-10-17 10:57:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:27,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82083753] [2022-10-17 10:57:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:57:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:57:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:57:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:57:28,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:28,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82083753] [2022-10-17 10:57:28,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82083753] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:28,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077329976] [2022-10-17 10:57:28,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:28,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:28,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:28,530 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:28,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-17 10:57:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:28,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:57:28,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:57:28,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:28,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077329976] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:28,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:28,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-10-17 10:57:28,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153743325] [2022-10-17 10:57:28,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:28,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:28,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:28,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:28,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:57:28,895 INFO L87 Difference]: Start difference. First operand 638 states and 1040 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:28,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:28,953 INFO L93 Difference]: Finished difference Result 1170 states and 1925 transitions. [2022-10-17 10:57:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:57:28,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2022-10-17 10:57:28,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:28,958 INFO L225 Difference]: With dead ends: 1170 [2022-10-17 10:57:28,958 INFO L226 Difference]: Without dead ends: 638 [2022-10-17 10:57:28,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:57:28,962 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 23 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:28,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2626 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-10-17 10:57:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2022-10-17 10:57:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 513 states have (on average 1.6471734892787524) internal successors, (845), 538 states have internal predecessors, (845), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-10-17 10:57:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1036 transitions. [2022-10-17 10:57:28,991 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1036 transitions. Word has length 94 [2022-10-17 10:57:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:28,992 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1036 transitions. [2022-10-17 10:57:28,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1036 transitions. [2022-10-17 10:57:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-17 10:57:28,994 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:28,995 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-10-17 10:57:29,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:29,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-17 10:57:29,209 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1664930944, now seen corresponding path program 1 times [2022-10-17 10:57:29,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:29,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005426261] [2022-10-17 10:57:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:29,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:57:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:57:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:57:29,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:29,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005426261] [2022-10-17 10:57:29,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005426261] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:29,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664188760] [2022-10-17 10:57:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:29,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:29,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:29,822 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:29,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-17 10:57:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:57:30,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:57:30,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:30,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664188760] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:30,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:30,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-10-17 10:57:30,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560796207] [2022-10-17 10:57:30,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:30,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:57:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:30,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:57:30,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:57:30,234 INFO L87 Difference]: Start difference. First operand 638 states and 1036 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:30,396 INFO L93 Difference]: Finished difference Result 1118 states and 1837 transitions. [2022-10-17 10:57:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:57:30,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2022-10-17 10:57:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:30,402 INFO L225 Difference]: With dead ends: 1118 [2022-10-17 10:57:30,402 INFO L226 Difference]: Without dead ends: 658 [2022-10-17 10:57:30,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:57:30,406 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 185 mSDsluCounter, 5076 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 5941 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:30,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 5941 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:57:30,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-10-17 10:57:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 638. [2022-10-17 10:57:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 513 states have (on average 1.6471734892787524) internal successors, (845), 538 states have internal predecessors, (845), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-10-17 10:57:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1036 transitions. [2022-10-17 10:57:30,433 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1036 transitions. Word has length 95 [2022-10-17 10:57:30,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:30,434 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1036 transitions. [2022-10-17 10:57:30,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-17 10:57:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1036 transitions. [2022-10-17 10:57:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 10:57:30,437 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:30,437 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-10-17 10:57:30,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:30,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:30,663 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:30,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1653862280, now seen corresponding path program 1 times [2022-10-17 10:57:30,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:30,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064926802] [2022-10-17 10:57:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:30,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:57:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:57:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:57:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:57:31,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:31,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064926802] [2022-10-17 10:57:31,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064926802] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:31,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928657088] [2022-10-17 10:57:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:31,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:31,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:31,201 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:31,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-17 10:57:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:31,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:57:31,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-17 10:57:31,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:57:31,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928657088] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:31,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:57:31,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-10-17 10:57:31,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74090737] [2022-10-17 10:57:31,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:31,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:57:31,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:31,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:57:31,581 INFO L87 Difference]: Start difference. First operand 638 states and 1036 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:31,651 INFO L93 Difference]: Finished difference Result 1226 states and 2007 transitions. [2022-10-17 10:57:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:57:31,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2022-10-17 10:57:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:31,656 INFO L225 Difference]: With dead ends: 1226 [2022-10-17 10:57:31,657 INFO L226 Difference]: Without dead ends: 674 [2022-10-17 10:57:31,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:57:31,661 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 38 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:31,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2602 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:31,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-10-17 10:57:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 662. [2022-10-17 10:57:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 537 states have (on average 1.6256983240223464) internal successors, (873), 562 states have internal predecessors, (873), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-10-17 10:57:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1064 transitions. [2022-10-17 10:57:31,693 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1064 transitions. Word has length 96 [2022-10-17 10:57:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:31,693 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1064 transitions. [2022-10-17 10:57:31,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 10:57:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1064 transitions. [2022-10-17 10:57:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 10:57:31,697 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:31,697 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-10-17 10:57:31,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:31,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-17 10:57:31,911 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -294314770, now seen corresponding path program 1 times [2022-10-17 10:57:31,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:31,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821234912] [2022-10-17 10:57:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:31,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:57:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:57:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:57:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-17 10:57:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:57:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:57:32,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:32,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821234912] [2022-10-17 10:57:32,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821234912] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:57:32,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809007922] [2022-10-17 10:57:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:32,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:57:32,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:32,387 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:57:32,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37770701-1a96-40f1-823b-ed1c89dceaea/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-17 10:57:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:32,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:57:32,714 INFO L286 TraceCheckSpWp]: Computing forward predicates...