./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b --- 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-8393723 [2022-11-18 20:14:14,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:14:14,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:14:14,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:14:14,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:14:14,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:14:14,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:14:14,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:14:14,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:14:14,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:14:14,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:14:14,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:14:14,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:14:14,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:14:14,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:14:14,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:14:14,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:14:14,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:14:14,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:14:14,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:14:14,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:14:14,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:14:14,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:14:14,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:14:14,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:14:14,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:14:14,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:14:14,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:14:14,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:14:14,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:14:14,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:14:14,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:14:14,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:14:14,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:14:14,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:14:14,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:14:14,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:14:14,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:14:14,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:14:14,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:14:14,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:14:14,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:14:15,041 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:14:15,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:14:15,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:14:15,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:14:15,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:14:15,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:14:15,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:14:15,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:14:15,045 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:14:15,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:14:15,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:14:15,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:14:15,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:14:15,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:14:15,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:14:15,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:14:15,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:14:15,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:14:15,049 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:14:15,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:14:15,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:14:15,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:14:15,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:14:15,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:14:15,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:14:15,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:14:15,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:14:15,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:14:15,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:14:15,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:14:15,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:14:15,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:14:15,052 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:14:15,053 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:14:15,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:14:15,053 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_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b [2022-11-18 20:14:15,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:14:15,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:14:15,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:14:15,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:14:15,431 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:14:15,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2022-11-18 20:14:15,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/data/aa3223b11/9ca6c77149c74a0ca7f93f2f271d25de/FLAG14bce5fdc [2022-11-18 20:14:16,134 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:14:16,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2022-11-18 20:14:16,155 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/data/aa3223b11/9ca6c77149c74a0ca7f93f2f271d25de/FLAG14bce5fdc [2022-11-18 20:14:16,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/data/aa3223b11/9ca6c77149c74a0ca7f93f2f271d25de [2022-11-18 20:14:16,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:14:16,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:14:16,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:14:16,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:14:16,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:14:16,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:16,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd7a985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16, skipping insertion in model container [2022-11-18 20:14:16,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:16,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:14:16,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:14:16,734 WARN L234 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_d09119d2-e050-4a0b-a513-8da205c8c2dd/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2022-11-18 20:14:16,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:14:16,833 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:14:16,846 WARN L234 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_d09119d2-e050-4a0b-a513-8da205c8c2dd/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2022-11-18 20:14:16,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:14:16,894 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:14:16,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16 WrapperNode [2022-11-18 20:14:16,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:14:16,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:14:16,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:14:16,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:14:16,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:16,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:16,942 INFO L138 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-11-18 20:14:16,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:14:16,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:14:16,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:14:16,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:14:16,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:16,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:16,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:16,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:16,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:17,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:17,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:17,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:17,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:14:17,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:14:17,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:14:17,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:14:17,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (1/1) ... [2022-11-18 20:14:17,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:14:17,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:17,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:14:17,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:14:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:14:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:14:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-18 20:14:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-18 20:14:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:14:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:14:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-18 20:14:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-18 20:14:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:14:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:14:17,215 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:14:17,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:14:17,744 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:14:17,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:14:17,754 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:14:17,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:14:17 BoogieIcfgContainer [2022-11-18 20:14:17,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:14:17,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:14:17,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:14:17,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:14:17,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:14:16" (1/3) ... [2022-11-18 20:14:17,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616d6736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:14:17, skipping insertion in model container [2022-11-18 20:14:17,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:16" (2/3) ... [2022-11-18 20:14:17,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616d6736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:14:17, skipping insertion in model container [2022-11-18 20:14:17,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:14:17" (3/3) ... [2022-11-18 20:14:17,773 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2022-11-18 20:14:17,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:14:17,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 20:14:17,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:14:17,902 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;@72f8a56f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:14:17,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-18 20:14:17,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 88 states have internal predecessors, (123), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:14:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:14:17,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:17,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:17,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:17,927 INFO L85 PathProgramCache]: Analyzing trace with hash 284682575, now seen corresponding path program 1 times [2022-11-18 20:14:17,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:17,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22804006] [2022-11-18 20:14:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:18,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22804006] [2022-11-18 20:14:18,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22804006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:18,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:18,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:18,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169582959] [2022-11-18 20:14:18,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:18,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:14:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:14:18,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:14:18,198 INFO L87 Difference]: Start difference. First operand has 100 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 88 states have internal predecessors, (123), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:18,280 INFO L93 Difference]: Finished difference Result 195 states and 282 transitions. [2022-11-18 20:14:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:14:18,284 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:14:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:18,295 INFO L225 Difference]: With dead ends: 195 [2022-11-18 20:14:18,295 INFO L226 Difference]: Without dead ends: 88 [2022-11-18 20:14:18,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:14:18,307 INFO L413 NwaCegarLoop]: 129 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, 129 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 [2022-11-18 20:14:18,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:14:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-18 20:14:18,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-18 20:14:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.609375) internal successors, (103), 78 states have internal predecessors, (103), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 116 transitions. [2022-11-18 20:14:18,363 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 116 transitions. Word has length 9 [2022-11-18 20:14:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:18,364 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 116 transitions. [2022-11-18 20:14:18,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 116 transitions. [2022-11-18 20:14:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:14:18,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:18,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:18,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:14:18,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash 283741237, now seen corresponding path program 1 times [2022-11-18 20:14:18,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:18,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114560596] [2022-11-18 20:14:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:18,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:18,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114560596] [2022-11-18 20:14:18,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114560596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:18,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:18,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554439102] [2022-11-18 20:14:18,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:18,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:14:18,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:18,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:14:18,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:14:18,502 INFO L87 Difference]: Start difference. First operand 88 states and 116 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:18,711 INFO L93 Difference]: Finished difference Result 221 states and 299 transitions. [2022-11-18 20:14:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:14:18,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:14:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:18,718 INFO L225 Difference]: With dead ends: 221 [2022-11-18 20:14:18,719 INFO L226 Difference]: Without dead ends: 136 [2022-11-18 20:14:18,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:14:18,722 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 80 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:18,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 310 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-18 20:14:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2022-11-18 20:14:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 101 states have (on average 1.5841584158415842) internal successors, (160), 115 states have internal predecessors, (160), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 173 transitions. [2022-11-18 20:14:18,743 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 173 transitions. Word has length 9 [2022-11-18 20:14:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:18,743 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 173 transitions. [2022-11-18 20:14:18,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 173 transitions. [2022-11-18 20:14:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:14:18,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:18,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:18,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:14:18,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash 743000068, now seen corresponding path program 1 times [2022-11-18 20:14:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:18,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238380878] [2022-11-18 20:14:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:18,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:18,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238380878] [2022-11-18 20:14:18,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238380878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:18,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:18,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:14:18,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22944659] [2022-11-18 20:14:18,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:18,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:14:18,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:18,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:14:18,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:14:18,863 INFO L87 Difference]: Start difference. First operand 126 states and 173 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:19,013 INFO L93 Difference]: Finished difference Result 151 states and 198 transitions. [2022-11-18 20:14:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:14:19,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 20:14:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:19,015 INFO L225 Difference]: With dead ends: 151 [2022-11-18 20:14:19,016 INFO L226 Difference]: Without dead ends: 149 [2022-11-18 20:14:19,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:14:19,018 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 114 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:19,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 419 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-18 20:14:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 129. [2022-11-18 20:14:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 1.5769230769230769) internal successors, (164), 118 states have internal predecessors, (164), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 177 transitions. [2022-11-18 20:14:19,035 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 177 transitions. Word has length 13 [2022-11-18 20:14:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:19,035 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 177 transitions. [2022-11-18 20:14:19,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:19,036 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 177 transitions. [2022-11-18 20:14:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:14:19,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:19,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:19,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:14:19,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1558165739, now seen corresponding path program 1 times [2022-11-18 20:14:19,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:19,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453121187] [2022-11-18 20:14:19,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:19,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:19,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:19,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453121187] [2022-11-18 20:14:19,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453121187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:19,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:19,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:14:19,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312213127] [2022-11-18 20:14:19,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:19,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:14:19,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:19,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:14:19,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:14:19,139 INFO L87 Difference]: Start difference. First operand 129 states and 177 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:19,325 INFO L93 Difference]: Finished difference Result 244 states and 324 transitions. [2022-11-18 20:14:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:14:19,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 20:14:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:19,328 INFO L225 Difference]: With dead ends: 244 [2022-11-18 20:14:19,328 INFO L226 Difference]: Without dead ends: 155 [2022-11-18 20:14:19,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:14:19,331 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 141 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:19,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 338 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-18 20:14:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 133. [2022-11-18 20:14:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.5555555555555556) internal successors, (168), 122 states have internal predecessors, (168), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2022-11-18 20:14:19,355 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 14 [2022-11-18 20:14:19,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:19,356 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2022-11-18 20:14:19,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:19,356 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2022-11-18 20:14:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:14:19,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:19,358 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:19,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:14:19,358 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:19,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:19,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2110218091, now seen corresponding path program 1 times [2022-11-18 20:14:19,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:19,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005081888] [2022-11-18 20:14:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:19,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:19,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:19,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005081888] [2022-11-18 20:14:19,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005081888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:19,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:19,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:14:19,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12836481] [2022-11-18 20:14:19,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:19,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:14:19,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:19,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:14:19,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:14:19,454 INFO L87 Difference]: Start difference. First operand 133 states and 181 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:14:19,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:19,566 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2022-11-18 20:14:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:14:19,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-18 20:14:19,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:19,568 INFO L225 Difference]: With dead ends: 186 [2022-11-18 20:14:19,569 INFO L226 Difference]: Without dead ends: 183 [2022-11-18 20:14:19,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:14:19,571 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 90 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:19,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 388 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-18 20:14:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 159. [2022-11-18 20:14:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 134 states have (on average 1.5597014925373134) internal successors, (209), 147 states have internal predecessors, (209), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 222 transitions. [2022-11-18 20:14:19,591 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 222 transitions. Word has length 16 [2022-11-18 20:14:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:19,592 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 222 transitions. [2022-11-18 20:14:19,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:14:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 222 transitions. [2022-11-18 20:14:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:14:19,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:19,594 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:19,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:14:19,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash -560223699, now seen corresponding path program 1 times [2022-11-18 20:14:19,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:19,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753147338] [2022-11-18 20:14:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:19,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:19,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753147338] [2022-11-18 20:14:19,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753147338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771260975] [2022-11-18 20:14:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:19,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:19,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:19,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:19,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:14:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:19,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:14:19,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:19,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:14:19,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771260975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:19,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:14:19,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 20:14:19,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694991588] [2022-11-18 20:14:19,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:19,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:14:19,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:14:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:14:19,929 INFO L87 Difference]: Start difference. First operand 159 states and 222 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:20,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:20,029 INFO L93 Difference]: Finished difference Result 200 states and 275 transitions. [2022-11-18 20:14:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:14:20,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 20:14:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:20,033 INFO L225 Difference]: With dead ends: 200 [2022-11-18 20:14:20,037 INFO L226 Difference]: Without dead ends: 199 [2022-11-18 20:14:20,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:14:20,039 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 19 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:20,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 237 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:20,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-18 20:14:20,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 156. [2022-11-18 20:14:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 131 states have (on average 1.5419847328244274) internal successors, (202), 144 states have internal predecessors, (202), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 215 transitions. [2022-11-18 20:14:20,065 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 215 transitions. Word has length 15 [2022-11-18 20:14:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:20,066 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 215 transitions. [2022-11-18 20:14:20,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 215 transitions. [2022-11-18 20:14:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:14:20,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:20,068 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:20,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:14:20,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:14:20,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:20,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:20,275 INFO L85 PathProgramCache]: Analyzing trace with hash -992251324, now seen corresponding path program 1 times [2022-11-18 20:14:20,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:20,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774350280] [2022-11-18 20:14:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:20,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:20,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:14:20,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:20,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774350280] [2022-11-18 20:14:20,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774350280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:20,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:20,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:20,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494162528] [2022-11-18 20:14:20,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:20,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:20,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:20,355 INFO L87 Difference]: Start difference. First operand 156 states and 215 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:14:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:20,406 INFO L93 Difference]: Finished difference Result 165 states and 224 transitions. [2022-11-18 20:14:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:20,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-18 20:14:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:20,412 INFO L225 Difference]: With dead ends: 165 [2022-11-18 20:14:20,413 INFO L226 Difference]: Without dead ends: 164 [2022-11-18 20:14:20,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:20,424 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 3 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:20,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 214 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:14:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-18 20:14:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 153. [2022-11-18 20:14:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 129 states have (on average 1.5271317829457365) internal successors, (197), 141 states have internal predecessors, (197), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 210 transitions. [2022-11-18 20:14:20,470 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 210 transitions. Word has length 17 [2022-11-18 20:14:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:20,471 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 210 transitions. [2022-11-18 20:14:20,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:14:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 210 transitions. [2022-11-18 20:14:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:14:20,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:20,484 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:20,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:14:20,485 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:20,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:20,486 INFO L85 PathProgramCache]: Analyzing trace with hash 192428157, now seen corresponding path program 1 times [2022-11-18 20:14:20,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:20,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740642076] [2022-11-18 20:14:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:20,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:20,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:20,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:20,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740642076] [2022-11-18 20:14:20,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740642076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:20,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:20,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:14:20,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206099002] [2022-11-18 20:14:20,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:20,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:14:20,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:14:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:14:20,628 INFO L87 Difference]: Start difference. First operand 153 states and 210 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:14:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:20,764 INFO L93 Difference]: Finished difference Result 182 states and 245 transitions. [2022-11-18 20:14:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:14:20,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-18 20:14:20,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:20,769 INFO L225 Difference]: With dead ends: 182 [2022-11-18 20:14:20,769 INFO L226 Difference]: Without dead ends: 180 [2022-11-18 20:14:20,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:14:20,771 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 78 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:20,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 387 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-18 20:14:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 157. [2022-11-18 20:14:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.518796992481203) internal successors, (202), 145 states have internal predecessors, (202), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 215 transitions. [2022-11-18 20:14:20,812 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 215 transitions. Word has length 18 [2022-11-18 20:14:20,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:20,813 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 215 transitions. [2022-11-18 20:14:20,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:14:20,813 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 215 transitions. [2022-11-18 20:14:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:14:20,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:20,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:20,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:14:20,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash 843364775, now seen corresponding path program 1 times [2022-11-18 20:14:20,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:20,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373201495] [2022-11-18 20:14:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:20,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:14:20,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:20,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373201495] [2022-11-18 20:14:20,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373201495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:20,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:20,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544425198] [2022-11-18 20:14:20,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:20,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:14:20,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:14:20,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:14:20,930 INFO L87 Difference]: Start difference. First operand 157 states and 215 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:21,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:21,001 INFO L93 Difference]: Finished difference Result 200 states and 270 transitions. [2022-11-18 20:14:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:14:21,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 20:14:21,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:21,004 INFO L225 Difference]: With dead ends: 200 [2022-11-18 20:14:21,004 INFO L226 Difference]: Without dead ends: 199 [2022-11-18 20:14:21,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:14:21,008 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 21 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:21,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 229 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:14:21,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-18 20:14:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 157. [2022-11-18 20:14:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 145 states have internal predecessors, (201), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2022-11-18 20:14:21,035 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 19 [2022-11-18 20:14:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:21,038 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2022-11-18 20:14:21,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:21,038 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2022-11-18 20:14:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:14:21,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:21,044 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:21,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:14:21,044 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1206677897, now seen corresponding path program 1 times [2022-11-18 20:14:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:21,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920336838] [2022-11-18 20:14:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:21,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:14:21,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:21,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920336838] [2022-11-18 20:14:21,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920336838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:21,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:21,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:14:21,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356412456] [2022-11-18 20:14:21,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:21,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:14:21,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:21,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:14:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:14:21,162 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:14:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:21,258 INFO L93 Difference]: Finished difference Result 179 states and 243 transitions. [2022-11-18 20:14:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:14:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-18 20:14:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:21,262 INFO L225 Difference]: With dead ends: 179 [2022-11-18 20:14:21,262 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 20:14:21,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:14:21,263 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 83 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:21,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 386 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 20:14:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 150. [2022-11-18 20:14:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.484375) internal successors, (190), 138 states have internal predecessors, (190), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 203 transitions. [2022-11-18 20:14:21,281 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 203 transitions. Word has length 23 [2022-11-18 20:14:21,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:21,282 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 203 transitions. [2022-11-18 20:14:21,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:14:21,282 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 203 transitions. [2022-11-18 20:14:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:14:21,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:21,284 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:21,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:14:21,289 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash 911160799, now seen corresponding path program 1 times [2022-11-18 20:14:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:21,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622732827] [2022-11-18 20:14:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:21,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:14:21,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:21,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622732827] [2022-11-18 20:14:21,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622732827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:21,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:21,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:14:21,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847139428] [2022-11-18 20:14:21,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:21,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:14:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:21,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:14:21,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:14:21,424 INFO L87 Difference]: Start difference. First operand 150 states and 203 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:14:21,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:21,536 INFO L93 Difference]: Finished difference Result 172 states and 231 transitions. [2022-11-18 20:14:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:14:21,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-18 20:14:21,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:21,538 INFO L225 Difference]: With dead ends: 172 [2022-11-18 20:14:21,539 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 20:14:21,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:14:21,540 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 72 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:21,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 388 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 20:14:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 144. [2022-11-18 20:14:21,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 124 states have (on average 1.467741935483871) internal successors, (182), 132 states have internal predecessors, (182), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:21,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 195 transitions. [2022-11-18 20:14:21,559 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 195 transitions. Word has length 25 [2022-11-18 20:14:21,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:21,559 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 195 transitions. [2022-11-18 20:14:21,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:14:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 195 transitions. [2022-11-18 20:14:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:14:21,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:21,561 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:21,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:14:21,562 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:21,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:21,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2013356145, now seen corresponding path program 1 times [2022-11-18 20:14:21,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:21,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813775282] [2022-11-18 20:14:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:21,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:14:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:21,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:21,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813775282] [2022-11-18 20:14:21,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813775282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:21,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142725404] [2022-11-18 20:14:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:21,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:21,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:21,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:14:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:21,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:14:21,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:14:22,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:22,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:22,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142725404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:22,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:14:22,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 18 [2022-11-18 20:14:22,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638030062] [2022-11-18 20:14:22,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:22,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:14:22,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:22,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:14:22,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:14:22,270 INFO L87 Difference]: Start difference. First operand 144 states and 195 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:14:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:22,993 INFO L93 Difference]: Finished difference Result 424 states and 570 transitions. [2022-11-18 20:14:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:14:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2022-11-18 20:14:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:22,997 INFO L225 Difference]: With dead ends: 424 [2022-11-18 20:14:22,998 INFO L226 Difference]: Without dead ends: 285 [2022-11-18 20:14:23,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:14:23,003 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 213 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:23,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1351 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:14:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-18 20:14:23,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 127. [2022-11-18 20:14:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 103 states have (on average 1.4271844660194175) internal successors, (147), 112 states have internal predecessors, (147), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-18 20:14:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2022-11-18 20:14:23,029 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 30 [2022-11-18 20:14:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:23,029 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2022-11-18 20:14:23,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:14:23,030 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2022-11-18 20:14:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 20:14:23,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:23,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 20:14:23,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:23,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:14:23,241 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1212442189, now seen corresponding path program 1 times [2022-11-18 20:14:23,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:23,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177863733] [2022-11-18 20:14:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:14:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:23,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:23,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177863733] [2022-11-18 20:14:23,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177863733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:23,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:23,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:14:23,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715656013] [2022-11-18 20:14:23,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:23,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:14:23,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:23,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:14:23,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:14:23,466 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:23,646 INFO L93 Difference]: Finished difference Result 302 states and 393 transitions. [2022-11-18 20:14:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:14:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-18 20:14:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:23,651 INFO L225 Difference]: With dead ends: 302 [2022-11-18 20:14:23,651 INFO L226 Difference]: Without dead ends: 244 [2022-11-18 20:14:23,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:14:23,653 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 148 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:23,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 949 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-18 20:14:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 138. [2022-11-18 20:14:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 121 states have internal predecessors, (155), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-18 20:14:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 177 transitions. [2022-11-18 20:14:23,672 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 177 transitions. Word has length 35 [2022-11-18 20:14:23,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:23,672 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 177 transitions. [2022-11-18 20:14:23,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:23,673 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 177 transitions. [2022-11-18 20:14:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 20:14:23,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:23,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 20:14:23,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:14:23,675 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:23,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash -531126669, now seen corresponding path program 1 times [2022-11-18 20:14:23,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:23,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433359106] [2022-11-18 20:14:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:23,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:14:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:14:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:23,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433359106] [2022-11-18 20:14:23,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433359106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:23,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510667749] [2022-11-18 20:14:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:23,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:23,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:23,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:23,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:14:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:14:23,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:24,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:24,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510667749] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:24,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:14:24,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-11-18 20:14:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236402947] [2022-11-18 20:14:24,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:24,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:14:24,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:24,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:14:24,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:14:24,226 INFO L87 Difference]: Start difference. First operand 138 states and 177 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 20:14:24,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:24,461 INFO L93 Difference]: Finished difference Result 294 states and 382 transitions. [2022-11-18 20:14:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:14:24,462 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) Word has length 39 [2022-11-18 20:14:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:24,464 INFO L225 Difference]: With dead ends: 294 [2022-11-18 20:14:24,464 INFO L226 Difference]: Without dead ends: 221 [2022-11-18 20:14:24,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:14:24,466 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 191 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:24,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1674 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-18 20:14:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 125. [2022-11-18 20:14:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 102 states have (on average 1.4019607843137254) internal successors, (143), 111 states have internal predecessors, (143), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:14:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 159 transitions. [2022-11-18 20:14:24,481 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 159 transitions. Word has length 39 [2022-11-18 20:14:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:24,481 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 159 transitions. [2022-11-18 20:14:24,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 20:14:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 159 transitions. [2022-11-18 20:14:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 20:14:24,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:24,482 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:24,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:24,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:14:24,694 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:24,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1626867932, now seen corresponding path program 2 times [2022-11-18 20:14:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:24,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82696138] [2022-11-18 20:14:24,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:24,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:14:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:14:24,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82696138] [2022-11-18 20:14:24,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82696138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:24,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:24,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:14:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609840857] [2022-11-18 20:14:24,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:14:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:14:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:14:24,852 INFO L87 Difference]: Start difference. First operand 125 states and 159 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:25,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:25,078 INFO L93 Difference]: Finished difference Result 279 states and 362 transitions. [2022-11-18 20:14:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:14:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-18 20:14:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:25,083 INFO L225 Difference]: With dead ends: 279 [2022-11-18 20:14:25,083 INFO L226 Difference]: Without dead ends: 225 [2022-11-18 20:14:25,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:14:25,087 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 209 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:25,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1077 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-18 20:14:25,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 179. [2022-11-18 20:14:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 151 states have (on average 1.4437086092715232) internal successors, (218), 161 states have internal predecessors, (218), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-18 20:14:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 241 transitions. [2022-11-18 20:14:25,104 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 241 transitions. Word has length 39 [2022-11-18 20:14:25,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:25,104 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 241 transitions. [2022-11-18 20:14:25,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:25,105 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 241 transitions. [2022-11-18 20:14:25,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 20:14:25,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:25,106 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:25,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:14:25,107 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:25,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:25,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1626866010, now seen corresponding path program 1 times [2022-11-18 20:14:25,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:25,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000503490] [2022-11-18 20:14:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:25,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:25,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:25,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:14:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:14:25,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:25,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000503490] [2022-11-18 20:14:25,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000503490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:25,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:25,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:14:25,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969816223] [2022-11-18 20:14:25,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:25,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:14:25,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:14:25,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:14:25,408 INFO L87 Difference]: Start difference. First operand 179 states and 241 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:25,720 INFO L93 Difference]: Finished difference Result 357 states and 464 transitions. [2022-11-18 20:14:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:14:25,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-18 20:14:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:25,722 INFO L225 Difference]: With dead ends: 357 [2022-11-18 20:14:25,723 INFO L226 Difference]: Without dead ends: 300 [2022-11-18 20:14:25,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:14:25,724 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 453 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:25,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 987 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:14:25,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-18 20:14:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 179. [2022-11-18 20:14:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 151 states have (on average 1.4304635761589404) internal successors, (216), 161 states have internal predecessors, (216), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-18 20:14:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 239 transitions. [2022-11-18 20:14:25,741 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 239 transitions. Word has length 39 [2022-11-18 20:14:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:25,742 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 239 transitions. [2022-11-18 20:14:25,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 239 transitions. [2022-11-18 20:14:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 20:14:25,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:25,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:25,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:14:25,744 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1569607708, now seen corresponding path program 1 times [2022-11-18 20:14:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:25,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710289026] [2022-11-18 20:14:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:14:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:14:26,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:26,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710289026] [2022-11-18 20:14:26,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710289026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:26,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456765455] [2022-11-18 20:14:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:26,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:26,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:26,006 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:26,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:14:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:26,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:14:26,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:14:26,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:14:26,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456765455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:26,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:14:26,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-11-18 20:14:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614530247] [2022-11-18 20:14:26,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:26,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:14:26,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:26,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:14:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:14:26,497 INFO L87 Difference]: Start difference. First operand 179 states and 239 transitions. Second operand has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 20:14:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:26,816 INFO L93 Difference]: Finished difference Result 448 states and 618 transitions. [2022-11-18 20:14:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:14:26,816 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 39 [2022-11-18 20:14:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:26,818 INFO L225 Difference]: With dead ends: 448 [2022-11-18 20:14:26,819 INFO L226 Difference]: Without dead ends: 352 [2022-11-18 20:14:26,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:14:26,820 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 399 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:26,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1155 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:14:26,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-18 20:14:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 262. [2022-11-18 20:14:26,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 224 states have (on average 1.4419642857142858) internal successors, (323), 235 states have internal predecessors, (323), 18 states have call successors, (18), 9 states have call predecessors, (18), 12 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-18 20:14:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 363 transitions. [2022-11-18 20:14:26,843 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 363 transitions. Word has length 39 [2022-11-18 20:14:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:26,843 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 363 transitions. [2022-11-18 20:14:26,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 20:14:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 363 transitions. [2022-11-18 20:14:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:14:26,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:26,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 20:14:26,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:27,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:14:27,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:27,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash -944717852, now seen corresponding path program 1 times [2022-11-18 20:14:27,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:27,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66372977] [2022-11-18 20:14:27,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:27,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:14:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:14:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:27,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:27,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66372977] [2022-11-18 20:14:27,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66372977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:27,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:27,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:14:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013979586] [2022-11-18 20:14:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:27,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:14:27,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:14:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:14:27,250 INFO L87 Difference]: Start difference. First operand 262 states and 363 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:14:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:27,488 INFO L93 Difference]: Finished difference Result 567 states and 787 transitions. [2022-11-18 20:14:27,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:14:27,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2022-11-18 20:14:27,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:27,493 INFO L225 Difference]: With dead ends: 567 [2022-11-18 20:14:27,493 INFO L226 Difference]: Without dead ends: 502 [2022-11-18 20:14:27,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:14:27,494 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 225 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:27,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1749 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-11-18 20:14:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 295. [2022-11-18 20:14:27,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 254 states have (on average 1.4409448818897639) internal successors, (366), 264 states have internal predecessors, (366), 21 states have call successors, (21), 10 states have call predecessors, (21), 12 states have return successors, (24), 20 states have call predecessors, (24), 19 states have call successors, (24) [2022-11-18 20:14:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 411 transitions. [2022-11-18 20:14:27,526 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 411 transitions. Word has length 43 [2022-11-18 20:14:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:27,527 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 411 transitions. [2022-11-18 20:14:27,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:14:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 411 transitions. [2022-11-18 20:14:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:14:27,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:27,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:27,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:14:27,530 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash 736072207, now seen corresponding path program 1 times [2022-11-18 20:14:27,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:27,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302889484] [2022-11-18 20:14:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:27,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:27,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:27,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:14:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:27,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302889484] [2022-11-18 20:14:27,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302889484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:27,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254559073] [2022-11-18 20:14:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:27,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:27,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:27,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:27,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:14:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:28,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:14:28,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:14:28,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:14:29,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254559073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:29,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:14:29,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 32 [2022-11-18 20:14:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698149877] [2022-11-18 20:14:29,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:29,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:14:29,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:29,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:14:29,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=911, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:14:29,278 INFO L87 Difference]: Start difference. First operand 295 states and 411 transitions. Second operand has 32 states, 30 states have (on average 2.6) internal successors, (78), 25 states have internal predecessors, (78), 7 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-18 20:14:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:32,580 INFO L93 Difference]: Finished difference Result 905 states and 1237 transitions. [2022-11-18 20:14:32,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:14:32,581 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.6) internal successors, (78), 25 states have internal predecessors, (78), 7 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2022-11-18 20:14:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:32,585 INFO L225 Difference]: With dead ends: 905 [2022-11-18 20:14:32,585 INFO L226 Difference]: Without dead ends: 800 [2022-11-18 20:14:32,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=336, Invalid=3696, Unknown=0, NotChecked=0, Total=4032 [2022-11-18 20:14:32,588 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 580 mSDsluCounter, 5897 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 6246 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:32,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 6246 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:14:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-18 20:14:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 411. [2022-11-18 20:14:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 357 states have (on average 1.464985994397759) internal successors, (523), 368 states have internal predecessors, (523), 30 states have call successors, (30), 13 states have call predecessors, (30), 16 states have return successors, (38), 29 states have call predecessors, (38), 27 states have call successors, (38) [2022-11-18 20:14:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 591 transitions. [2022-11-18 20:14:32,631 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 591 transitions. Word has length 43 [2022-11-18 20:14:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:32,631 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 591 transitions. [2022-11-18 20:14:32,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.6) internal successors, (78), 25 states have internal predecessors, (78), 7 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-18 20:14:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 591 transitions. [2022-11-18 20:14:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 20:14:32,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:32,633 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:32,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:32,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:32,839 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1766237002, now seen corresponding path program 1 times [2022-11-18 20:14:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:32,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952635080] [2022-11-18 20:14:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:32,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:14:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:14:32,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:32,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952635080] [2022-11-18 20:14:32,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952635080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:32,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499565975] [2022-11-18 20:14:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:32,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:32,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:32,889 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:32,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:14:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:32,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:14:32,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:14:32,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:14:32,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499565975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:32,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:14:32,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2022-11-18 20:14:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044404440] [2022-11-18 20:14:32,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:32,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:32,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:32,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:32,972 INFO L87 Difference]: Start difference. First operand 411 states and 591 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:14:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:33,055 INFO L93 Difference]: Finished difference Result 701 states and 1007 transitions. [2022-11-18 20:14:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:33,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-11-18 20:14:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:33,058 INFO L225 Difference]: With dead ends: 701 [2022-11-18 20:14:33,058 INFO L226 Difference]: Without dead ends: 432 [2022-11-18 20:14:33,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:33,060 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:33,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 206 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:14:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-18 20:14:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 420. [2022-11-18 20:14:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 366 states have (on average 1.453551912568306) internal successors, (532), 377 states have internal predecessors, (532), 30 states have call successors, (30), 13 states have call predecessors, (30), 16 states have return successors, (38), 29 states have call predecessors, (38), 27 states have call successors, (38) [2022-11-18 20:14:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 600 transitions. [2022-11-18 20:14:33,108 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 600 transitions. Word has length 44 [2022-11-18 20:14:33,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:33,108 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 600 transitions. [2022-11-18 20:14:33,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:14:33,108 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 600 transitions. [2022-11-18 20:14:33,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:14:33,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:33,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:33,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:33,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:33,315 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:33,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash 34969610, now seen corresponding path program 1 times [2022-11-18 20:14:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:33,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921793919] [2022-11-18 20:14:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:33,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:33,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:14:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:14:33,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:33,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921793919] [2022-11-18 20:14:33,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921793919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:33,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:33,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:14:33,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598426010] [2022-11-18 20:14:33,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:33,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:14:33,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:33,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:14:33,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:14:33,693 INFO L87 Difference]: Start difference. First operand 420 states and 600 transitions. Second operand has 11 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:34,242 INFO L93 Difference]: Finished difference Result 559 states and 789 transitions. [2022-11-18 20:14:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:14:34,242 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-18 20:14:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:34,245 INFO L225 Difference]: With dead ends: 559 [2022-11-18 20:14:34,245 INFO L226 Difference]: Without dead ends: 558 [2022-11-18 20:14:34,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:14:34,250 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 294 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:34,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1104 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:14:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-18 20:14:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 418. [2022-11-18 20:14:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 364 states have (on average 1.4532967032967032) internal successors, (529), 375 states have internal predecessors, (529), 30 states have call successors, (30), 13 states have call predecessors, (30), 16 states have return successors, (38), 29 states have call predecessors, (38), 27 states have call successors, (38) [2022-11-18 20:14:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 597 transitions. [2022-11-18 20:14:34,301 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 597 transitions. Word has length 45 [2022-11-18 20:14:34,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:34,302 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 597 transitions. [2022-11-18 20:14:34,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:34,302 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 597 transitions. [2022-11-18 20:14:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:14:34,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:34,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:34,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:14:34,304 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1153737171, now seen corresponding path program 1 times [2022-11-18 20:14:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:34,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595813406] [2022-11-18 20:14:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:34,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:14:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:34,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:14:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:34,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:34,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595813406] [2022-11-18 20:14:34,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595813406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:34,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525662167] [2022-11-18 20:14:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:34,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:34,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:34,448 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:34,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:14:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:34,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:14:34,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:34,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:34,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525662167] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:34,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:14:34,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-11-18 20:14:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869607399] [2022-11-18 20:14:34,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:34,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:14:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:14:34,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:14:34,757 INFO L87 Difference]: Start difference. First operand 418 states and 597 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 10 states have internal predecessors, (48), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:14:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:34,961 INFO L93 Difference]: Finished difference Result 604 states and 850 transitions. [2022-11-18 20:14:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:14:34,962 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 10 states have internal predecessors, (48), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2022-11-18 20:14:34,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:34,965 INFO L225 Difference]: With dead ends: 604 [2022-11-18 20:14:34,965 INFO L226 Difference]: Without dead ends: 533 [2022-11-18 20:14:34,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:14:34,969 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 133 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:34,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1780 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:14:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-18 20:14:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 441. [2022-11-18 20:14:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 384 states have (on average 1.4427083333333333) internal successors, (554), 393 states have internal predecessors, (554), 33 states have call successors, (33), 15 states have call predecessors, (33), 16 states have return successors, (39), 32 states have call predecessors, (39), 28 states have call successors, (39) [2022-11-18 20:14:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 626 transitions. [2022-11-18 20:14:35,020 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 626 transitions. Word has length 47 [2022-11-18 20:14:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:35,021 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 626 transitions. [2022-11-18 20:14:35,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 10 states have internal predecessors, (48), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:14:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 626 transitions. [2022-11-18 20:14:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:14:35,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:35,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:35,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:35,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 20:14:35,229 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:35,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1153735249, now seen corresponding path program 1 times [2022-11-18 20:14:35,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:35,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802275802] [2022-11-18 20:14:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:35,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:35,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:35,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:14:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:14:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:35,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:35,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802275802] [2022-11-18 20:14:35,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802275802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:35,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322212466] [2022-11-18 20:14:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:35,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:35,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:35,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:35,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:14:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:35,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:14:35,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:14:35,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:14:35,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322212466] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:35,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:35,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 15 [2022-11-18 20:14:35,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865910577] [2022-11-18 20:14:35,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:35,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:14:35,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:35,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:14:35,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:14:35,810 INFO L87 Difference]: Start difference. First operand 441 states and 626 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:14:35,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:35,874 INFO L93 Difference]: Finished difference Result 602 states and 857 transitions. [2022-11-18 20:14:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:14:35,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2022-11-18 20:14:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:35,877 INFO L225 Difference]: With dead ends: 602 [2022-11-18 20:14:35,877 INFO L226 Difference]: Without dead ends: 426 [2022-11-18 20:14:35,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:14:35,879 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 103 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:35,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 159 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:14:35,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-18 20:14:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 416. [2022-11-18 20:14:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 365 states have (on average 1.441095890410959) internal successors, (526), 375 states have internal predecessors, (526), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (33), 28 states have call predecessors, (33), 26 states have call successors, (33) [2022-11-18 20:14:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 588 transitions. [2022-11-18 20:14:35,922 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 588 transitions. Word has length 47 [2022-11-18 20:14:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:35,922 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 588 transitions. [2022-11-18 20:14:35,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:14:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 588 transitions. [2022-11-18 20:14:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:14:35,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:35,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:35,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:36,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:14:36,130 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash 174853510, now seen corresponding path program 1 times [2022-11-18 20:14:36,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:36,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874805672] [2022-11-18 20:14:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:36,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:14:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:14:36,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:36,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874805672] [2022-11-18 20:14:36,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874805672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:36,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:36,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:14:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293118790] [2022-11-18 20:14:36,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:36,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:14:36,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:14:36,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:14:36,494 INFO L87 Difference]: Start difference. First operand 416 states and 588 transitions. Second operand has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:37,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:37,343 INFO L93 Difference]: Finished difference Result 1098 states and 1612 transitions. [2022-11-18 20:14:37,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:14:37,343 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-18 20:14:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:37,348 INFO L225 Difference]: With dead ends: 1098 [2022-11-18 20:14:37,349 INFO L226 Difference]: Without dead ends: 1096 [2022-11-18 20:14:37,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:14:37,351 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 292 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:37,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 2948 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:14:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-11-18 20:14:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 568. [2022-11-18 20:14:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 504 states have (on average 1.4662698412698412) internal successors, (739), 515 states have internal predecessors, (739), 38 states have call successors, (38), 15 states have call predecessors, (38), 18 states have return successors, (46), 37 states have call predecessors, (46), 35 states have call successors, (46) [2022-11-18 20:14:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 823 transitions. [2022-11-18 20:14:37,419 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 823 transitions. Word has length 47 [2022-11-18 20:14:37,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:37,419 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 823 transitions. [2022-11-18 20:14:37,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:14:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 823 transitions. [2022-11-18 20:14:37,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 20:14:37,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:37,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:37,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:14:37,422 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:37,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:37,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2054935855, now seen corresponding path program 1 times [2022-11-18 20:14:37,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:37,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39855771] [2022-11-18 20:14:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:37,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:37,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:14:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:37,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:14:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:14:37,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:37,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39855771] [2022-11-18 20:14:37,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39855771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:37,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753081197] [2022-11-18 20:14:37,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:37,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:37,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:37,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:37,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:14:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:37,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:14:37,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:14:38,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:14:39,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753081197] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:39,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:14:39,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 28 [2022-11-18 20:14:39,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362443816] [2022-11-18 20:14:39,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:39,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:14:39,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:39,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:14:39,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:14:39,036 INFO L87 Difference]: Start difference. First operand 568 states and 823 transitions. Second operand has 29 states, 28 states have (on average 2.857142857142857) internal successors, (80), 23 states have internal predecessors, (80), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 20:14:42,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:42,277 INFO L93 Difference]: Finished difference Result 1737 states and 2541 transitions. [2022-11-18 20:14:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:14:42,285 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.857142857142857) internal successors, (80), 23 states have internal predecessors, (80), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) Word has length 48 [2022-11-18 20:14:42,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:42,292 INFO L225 Difference]: With dead ends: 1737 [2022-11-18 20:14:42,292 INFO L226 Difference]: Without dead ends: 1569 [2022-11-18 20:14:42,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=375, Invalid=2817, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 20:14:42,295 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1246 mSDsluCounter, 5411 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 5790 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:42,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 5790 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:14:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2022-11-18 20:14:42,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 610. [2022-11-18 20:14:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 542 states have (on average 1.459409594095941) internal successors, (791), 553 states have internal predecessors, (791), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (49), 40 states have call predecessors, (49), 38 states have call successors, (49) [2022-11-18 20:14:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 881 transitions. [2022-11-18 20:14:42,382 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 881 transitions. Word has length 48 [2022-11-18 20:14:42,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:42,384 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 881 transitions. [2022-11-18 20:14:42,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.857142857142857) internal successors, (80), 23 states have internal predecessors, (80), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 20:14:42,384 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 881 transitions. [2022-11-18 20:14:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 20:14:42,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:42,386 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:42,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:42,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:14:42,592 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-18 20:14:42,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1075067029, now seen corresponding path program 1 times [2022-11-18 20:14:42,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:42,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263459501] [2022-11-18 20:14:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:42,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:14:42,635 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:14:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:14:42,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:14:42,698 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:14:42,699 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location addfltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-11-18 20:14:42,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-11-18 20:14:42,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-11-18 20:14:42,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-11-18 20:14:42,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2022-11-18 20:14:42,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2022-11-18 20:14:42,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2022-11-18 20:14:42,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2022-11-18 20:14:42,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-11-18 20:14:42,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-11-18 20:14:42,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2022-11-18 20:14:42,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2022-11-18 20:14:42,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-11-18 20:14:42,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-11-18 20:14:42,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-11-18 20:14:42,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location addfltErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-11-18 20:14:42,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:14:42,712 INFO L444 BasicCegarLoop]: Path program histogram: [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] [2022-11-18 20:14:42,716 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:14:42,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:14:42 BoogieIcfgContainer [2022-11-18 20:14:42,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:14:42,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:14:42,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:14:42,773 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:14:42,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:14:17" (3/4) ... [2022-11-18 20:14:42,777 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 20:14:42,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:14:42,777 INFO L158 Benchmark]: Toolchain (without parser) took 26318.19ms. Allocated memory was 130.0MB in the beginning and 276.8MB in the end (delta: 146.8MB). Free memory was 89.5MB in the beginning and 162.8MB in the end (delta: -73.3MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2022-11-18 20:14:42,778 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:14:42,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.47ms. Allocated memory is still 130.0MB. Free memory was 89.2MB in the beginning and 101.0MB in the end (delta: -11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:14:42,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.25ms. Allocated memory is still 130.0MB. Free memory was 101.0MB in the beginning and 98.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:14:42,779 INFO L158 Benchmark]: Boogie Preprocessor took 74.69ms. Allocated memory is still 130.0MB. Free memory was 98.9MB in the beginning and 97.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:14:42,779 INFO L158 Benchmark]: RCFGBuilder took 742.41ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 77.4MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-18 20:14:42,779 INFO L158 Benchmark]: TraceAbstraction took 25008.10ms. Allocated memory was 130.0MB in the beginning and 276.8MB in the end (delta: 146.8MB). Free memory was 77.0MB in the beginning and 163.8MB in the end (delta: -86.8MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2022-11-18 20:14:42,780 INFO L158 Benchmark]: Witness Printer took 4.14ms. Allocated memory is still 276.8MB. Free memory was 163.8MB in the beginning and 162.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:14:42,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.47ms. Allocated memory is still 130.0MB. Free memory was 89.2MB in the beginning and 101.0MB in the end (delta: -11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.25ms. Allocated memory is still 130.0MB. Free memory was 101.0MB in the beginning and 98.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.69ms. Allocated memory is still 130.0MB. Free memory was 98.9MB in the beginning and 97.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 742.41ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 77.4MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 25008.10ms. Allocated memory was 130.0MB in the beginning and 276.8MB in the end (delta: 146.8MB). Free memory was 77.0MB in the beginning and 163.8MB in the end (delta: -86.8MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. * Witness Printer took 4.14ms. Allocated memory is still 276.8MB. Free memory was 163.8MB in the beginning and 162.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseComplement at line 77, overapproximation of bitwiseAnd at line 109. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add1 ; [L234] unsigned int r_add2 ; [L235] unsigned int zero ; [L236] int tmp ; [L237] int tmp___0 ; [L238] int __retres14 ; VAL [ea=-127, eb=-128] [L242] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L242] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=-127, eb=-128] [L242] zero = base2flt(0, 0) [L243] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=-127, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=-127, \old(m)=16777216, e=-127, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=-127, \old(m)=16777216, e=-127, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-127, \old(m)=16777216, e=-127, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=-127, \old(m)=16777216, e=-127, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-127, \old(m)=16777216, e=-127, m=16777216] [L77] m = m & ~ (1U << 24U) VAL [\old(e)=-127, \old(m)=16777216, e=-127, m=0] [L78] EXPR e + 128 VAL [\old(e)=-127, \old(m)=16777216, e=-127, m=0] [L78] res = m | ((unsigned int )(e + 128) << 24U) VAL [\old(e)=-127, \old(m)=16777216, e=-127, m=0, res=16777216] [L79] __retres4 = res VAL [\old(e)=-127, \old(m)=16777216, __retres4=16777216, e=-127, m=0, res=16777216] [L81] return (__retres4); VAL [\old(e)=-127, \old(m)=16777216, \result=16777216, __retres4=16777216, e=-127, m=0, res=16777216] [L243] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=16777216, ea=-127, eb=-128, ma=16777216, zero=0] [L243] a = base2flt(ma, ea) [L244] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=-128, \old(m)=16777217] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=-128, \old(m)=16777217, e=-128, m=16777217] [L30] COND FALSE !(! m) VAL [\old(e)=-128, \old(m)=16777217, e=-128, m=16777217] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-128, \old(m)=16777217, e=-128, m=16777217] [L58] COND TRUE 1 VAL [\old(e)=-128, \old(m)=16777217, e=-128, m=16777217] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-128, \old(m)=16777217, e=-128, m=16777217] [L77] m = m & ~ (1U << 24U) VAL [\old(e)=-128, \old(m)=16777217, e=-128, m=16777217] [L78] EXPR e + 128 VAL [\old(e)=-128, \old(m)=16777217, e=-128, m=16777217] [L78] res = m | ((unsigned int )(e + 128) << 24U) VAL [\old(e)=-128, \old(m)=16777217, e=-128, m=16777217, res=16777217] [L79] __retres4 = res VAL [\old(e)=-128, \old(m)=16777217, __retres4=16777217, e=-128, m=16777217, res=16777217] [L81] return (__retres4); VAL [\old(e)=-128, \old(m)=16777217, \result=-36028797002186751, __retres4=16777217, e=-128, m=16777217, res=16777217] [L244] RET, EXPR base2flt(mb, eb) VAL [a=16777216, base2flt(mb, eb)=-36028797002186751, ea=-127, eb=-128, ma=16777216, mb=16777217, zero=0] [L244] b = base2flt(mb, eb) [L245] CALL addflt(a, b) VAL [\old(a)=16777216, \old(b)=16777217] [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; VAL [\old(a)=16777216, \old(b)=16777217, a=16777216, b=16777217] [L95] COND TRUE a < b [L96] tmp = a [L97] a = b [L98] b = tmp VAL [\old(a)=16777216, \old(b)=16777217, a=16777217, b=16777216, tmp=16777216] [L102] COND FALSE !(! b) VAL [\old(a)=16777216, \old(b)=16777217, a=16777217, b=16777216, tmp=16777216] [L109] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=16777216, \old(b)=16777217, a=16777217, b=16777216, ma=0, tmp=16777216] [L110] (int )(a >> 24U) - 128 VAL [\old(a)=16777216, \old(b)=16777217, a=16777217, b=16777216, ma=0, tmp=16777216] - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 100 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 24.8s, OverallIterations: 26, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5279 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5191 mSDsluCounter, 30600 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26817 mSDsCounter, 628 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6288 IncrementalHoareTripleChecker+Invalid, 6916 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 628 mSolverCounterUnsat, 3783 mSDtfsCounter, 6288 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1027 GetRequests, 697 SyntacticMatches, 4 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1746 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=610occurred in iteration=25, InterpolantAutomatonStates: 265, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 25 MinimizatonAttempts, 3202 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 1164 NumberOfCodeBlocks, 1164 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1367 ConstructedInterpolants, 0 QuantifiedInterpolants, 5410 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1115 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 41 InterpolantComputations, 19 PerfectInterpolantSequences, 455/553 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-18 20:14:42,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d09119d2-e050-4a0b-a513-8da205c8c2dd/bin/uautomizer-TMbwUNV5ro/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample