./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-simple/nested_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d0f32d2f39934bb8fd732fa206acfa5d2fb4cacaee37919c0e4326d55891c86 --- 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-38b53e6 [2022-11-26 00:00:07,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:00:07,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:00:07,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:00:07,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:00:07,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:00:07,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:00:07,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:00:07,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:00:07,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:00:07,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:00:07,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:00:07,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:00:07,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:00:07,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:00:07,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:00:07,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:00:07,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:00:07,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:00:08,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:00:08,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:00:08,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:00:08,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:00:08,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:00:08,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:00:08,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:00:08,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:00:08,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:00:08,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:00:08,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:00:08,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:00:08,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:00:08,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:00:08,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:00:08,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:00:08,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:00:08,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:00:08,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:00:08,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:00:08,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:00:08,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:00:08,035 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-26 00:00:08,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:00:08,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:00:08,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:00:08,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:00:08,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:00:08,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:00:08,082 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:00:08,083 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:00:08,083 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:00:08,083 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:00:08,084 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:00:08,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:00:08,085 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:00:08,085 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:00:08,085 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:00:08,085 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:00:08,085 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:00:08,086 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:00:08,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:00:08,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:00:08,087 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:00:08,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:00:08,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:00:08,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:00:08,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:00:08,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:00:08,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:00:08,088 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:00:08,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:00:08,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:00:08,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:00:08,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:00:08,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:00:08,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:00:08,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:00:08,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:00:08,091 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:00:08,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:00:08,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:00:08,092 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:00:08,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:00:08,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:00:08,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:00:08,093 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_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d0f32d2f39934bb8fd732fa206acfa5d2fb4cacaee37919c0e4326d55891c86 [2022-11-26 00:00:08,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:00:08,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:00:08,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:00:08,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:00:08,437 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:00:08,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loop-simple/nested_5.c [2022-11-26 00:00:11,424 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:00:11,600 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:00:11,600 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/sv-benchmarks/c/loop-simple/nested_5.c [2022-11-26 00:00:11,614 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/data/8c2695590/0b7c373087884354b57aa9cf4cff14c8/FLAGdf6c1a74c [2022-11-26 00:00:11,634 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/data/8c2695590/0b7c373087884354b57aa9cf4cff14c8 [2022-11-26 00:00:11,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:00:11,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:00:11,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:00:11,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:00:11,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:00:11,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:11,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5523be32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11, skipping insertion in model container [2022-11-26 00:00:11,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:11,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:00:11,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:00:11,900 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/sv-benchmarks/c/loop-simple/nested_5.c[899,912] [2022-11-26 00:00:11,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:00:11,912 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:00:11,926 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/sv-benchmarks/c/loop-simple/nested_5.c[899,912] [2022-11-26 00:00:11,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:00:11,941 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:00:11,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11 WrapperNode [2022-11-26 00:00:11,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:00:11,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:00:11,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:00:11,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:00:11,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:11,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:11,980 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2022-11-26 00:00:11,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:00:11,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:00:11,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:00:11,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:00:11,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:11,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:12,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:12,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:12,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:12,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:12,019 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:12,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:12,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:00:12,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:00:12,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:00:12,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:00:12,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (1/1) ... [2022-11-26 00:00:12,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:00:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:12,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:00:12,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:00:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:00:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:00:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:00:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:00:12,173 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:00:12,175 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:00:12,379 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:00:12,426 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:00:12,434 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-26 00:00:12,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:12 BoogieIcfgContainer [2022-11-26 00:00:12,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:00:12,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:00:12,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:00:12,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:00:12,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:11" (1/3) ... [2022-11-26 00:00:12,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27721639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:12, skipping insertion in model container [2022-11-26 00:00:12,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:11" (2/3) ... [2022-11-26 00:00:12,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27721639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:12, skipping insertion in model container [2022-11-26 00:00:12,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:12" (3/3) ... [2022-11-26 00:00:12,449 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_5.c [2022-11-26 00:00:12,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:00:12,469 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-26 00:00:12,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:00:12,541 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=FINITE_AUTOMATA, 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;@6c0aee85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:00:12,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-26 00:00:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.9375) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:12,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:00:12,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:12,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:00:12,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash 3587640, now seen corresponding path program 1 times [2022-11-26 00:00:12,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:12,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108890857] [2022-11-26 00:00:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:12,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:12,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:12,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108890857] [2022-11-26 00:00:12,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108890857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:12,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:00:12,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:00:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777002445] [2022-11-26 00:00:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:12,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:12,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:12,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:12,900 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.9375) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:12,985 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2022-11-26 00:00:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:12,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 00:00:12,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:12,995 INFO L225 Difference]: With dead ends: 71 [2022-11-26 00:00:12,996 INFO L226 Difference]: Without dead ends: 44 [2022-11-26 00:00:12,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:13,002 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:13,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 41 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-26 00:00:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2022-11-26 00:00:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 37 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2022-11-26 00:00:13,049 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 4 [2022-11-26 00:00:13,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:13,050 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2022-11-26 00:00:13,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,051 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2022-11-26 00:00:13,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:00:13,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:13,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:00:13,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:00:13,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:13,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash -849669770, now seen corresponding path program 1 times [2022-11-26 00:00:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:13,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447532350] [2022-11-26 00:00:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:13,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:13,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447532350] [2022-11-26 00:00:13,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447532350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:13,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:00:13,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:00:13,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197544330] [2022-11-26 00:00:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:13,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:13,125 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:13,159 INFO L93 Difference]: Finished difference Result 89 states and 125 transitions. [2022-11-26 00:00:13,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 00:00:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:13,161 INFO L225 Difference]: With dead ends: 89 [2022-11-26 00:00:13,161 INFO L226 Difference]: Without dead ends: 52 [2022-11-26 00:00:13,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:13,163 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:13,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-26 00:00:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2022-11-26 00:00:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.725) internal successors, (69), 49 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2022-11-26 00:00:13,171 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 6 [2022-11-26 00:00:13,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:13,172 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2022-11-26 00:00:13,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,172 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2022-11-26 00:00:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:00:13,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:13,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:13,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:00:13,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:13,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:13,175 INFO L85 PathProgramCache]: Analyzing trace with hash -570017206, now seen corresponding path program 1 times [2022-11-26 00:00:13,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:13,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129529626] [2022-11-26 00:00:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:13,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:13,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129529626] [2022-11-26 00:00:13,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129529626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:13,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:00:13,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:00:13,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627994942] [2022-11-26 00:00:13,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:13,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:13,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:13,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:13,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:13,221 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:13,267 INFO L93 Difference]: Finished difference Result 111 states and 161 transitions. [2022-11-26 00:00:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:00:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:13,271 INFO L225 Difference]: With dead ends: 111 [2022-11-26 00:00:13,271 INFO L226 Difference]: Without dead ends: 62 [2022-11-26 00:00:13,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:13,273 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:13,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-26 00:00:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-26 00:00:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 61 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2022-11-26 00:00:13,284 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 7 [2022-11-26 00:00:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:13,285 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2022-11-26 00:00:13,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2022-11-26 00:00:13,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:00:13,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:13,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:13,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:00:13,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash -425961209, now seen corresponding path program 1 times [2022-11-26 00:00:13,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:13,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811967711] [2022-11-26 00:00:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:13,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:13,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:13,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811967711] [2022-11-26 00:00:13,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811967711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:13,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:00:13,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:00:13,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548397327] [2022-11-26 00:00:13,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:13,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:13,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:13,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:13,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:13,332 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:13,367 INFO L93 Difference]: Finished difference Result 169 states and 227 transitions. [2022-11-26 00:00:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:13,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:00:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:13,369 INFO L225 Difference]: With dead ends: 169 [2022-11-26 00:00:13,369 INFO L226 Difference]: Without dead ends: 108 [2022-11-26 00:00:13,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:13,371 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:13,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 41 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-26 00:00:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2022-11-26 00:00:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 94 states have (on average 1.5) internal successors, (141), 103 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 141 transitions. [2022-11-26 00:00:13,387 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 141 transitions. Word has length 8 [2022-11-26 00:00:13,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:13,387 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 141 transitions. [2022-11-26 00:00:13,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 141 transitions. [2022-11-26 00:00:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:00:13,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:13,388 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:13,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:00:13,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:13,390 INFO L85 PathProgramCache]: Analyzing trace with hash 918180742, now seen corresponding path program 1 times [2022-11-26 00:00:13,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:13,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699747814] [2022-11-26 00:00:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:13,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:13,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:13,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699747814] [2022-11-26 00:00:13,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699747814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:13,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982241353] [2022-11-26 00:00:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:13,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:13,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:13,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:13,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:00:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:13,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:00:13,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:13,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:00:13,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982241353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:13,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:00:13,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-26 00:00:13,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959609280] [2022-11-26 00:00:13,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:13,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:00:13,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:13,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:00:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:13,621 INFO L87 Difference]: Start difference. First operand 104 states and 141 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:13,670 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2022-11-26 00:00:13,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:00:13,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:00:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:13,679 INFO L225 Difference]: With dead ends: 104 [2022-11-26 00:00:13,679 INFO L226 Difference]: Without dead ends: 103 [2022-11-26 00:00:13,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:13,681 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:13,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 20 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-26 00:00:13,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-26 00:00:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 102 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 133 transitions. [2022-11-26 00:00:13,703 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 133 transitions. Word has length 10 [2022-11-26 00:00:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:13,703 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 133 transitions. [2022-11-26 00:00:13,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 133 transitions. [2022-11-26 00:00:13,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:00:13,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:13,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:13,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:13,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:13,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:13,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:13,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1601167993, now seen corresponding path program 1 times [2022-11-26 00:00:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:13,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148465112] [2022-11-26 00:00:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:13,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:00:13,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:13,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148465112] [2022-11-26 00:00:13,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148465112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:13,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:00:13,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:00:13,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411267295] [2022-11-26 00:00:13,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:13,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:13,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:13,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:13,974 INFO L87 Difference]: Start difference. First operand 103 states and 133 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:14,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:14,000 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2022-11-26 00:00:14,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:14,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 00:00:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:14,002 INFO L225 Difference]: With dead ends: 103 [2022-11-26 00:00:14,002 INFO L226 Difference]: Without dead ends: 102 [2022-11-26 00:00:14,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:00:14,004 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:14,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:14,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-26 00:00:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2022-11-26 00:00:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 85 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2022-11-26 00:00:14,016 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 11 [2022-11-26 00:00:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:14,016 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2022-11-26 00:00:14,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:14,017 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2022-11-26 00:00:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 00:00:14,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:14,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:14,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:00:14,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:14,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1397737157, now seen corresponding path program 1 times [2022-11-26 00:00:14,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:14,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084768319] [2022-11-26 00:00:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:14,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:00:14,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:14,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084768319] [2022-11-26 00:00:14,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084768319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:14,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766759640] [2022-11-26 00:00:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:14,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:14,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:14,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:00:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:14,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:00:14,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:00:14,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:00:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:00:14,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766759640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:00:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [39004890] [2022-11-26 00:00:14,194 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-26 00:00:14,194 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:00:14,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:00:14,203 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:00:14,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:00:14,746 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:00:15,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [39004890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:15,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:00:15,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 15 [2022-11-26 00:00:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271117279] [2022-11-26 00:00:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:00:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:15,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:00:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:00:15,411 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:15,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:15,681 INFO L93 Difference]: Finished difference Result 107 states and 133 transitions. [2022-11-26 00:00:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:00:15,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-26 00:00:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:15,686 INFO L225 Difference]: With dead ends: 107 [2022-11-26 00:00:15,686 INFO L226 Difference]: Without dead ends: 106 [2022-11-26 00:00:15,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:00:15,690 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:15,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 14 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:00:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-26 00:00:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-11-26 00:00:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 95 states have (on average 1.368421052631579) internal successors, (130), 102 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 130 transitions. [2022-11-26 00:00:15,720 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 130 transitions. Word has length 17 [2022-11-26 00:00:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:15,721 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 130 transitions. [2022-11-26 00:00:15,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 130 transitions. [2022-11-26 00:00:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:00:15,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:15,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:15,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-26 00:00:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:15,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash -380178823, now seen corresponding path program 1 times [2022-11-26 00:00:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:15,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854408198] [2022-11-26 00:00:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:00:15,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:15,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854408198] [2022-11-26 00:00:15,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854408198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:15,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991461975] [2022-11-26 00:00:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:15,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:15,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:15,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:16,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:00:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:16,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:00:16,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:00:16,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:00:16,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991461975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:16,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:00:16,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-26 00:00:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748418626] [2022-11-26 00:00:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:16,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:16,090 INFO L87 Difference]: Start difference. First operand 103 states and 130 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:16,127 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2022-11-26 00:00:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-26 00:00:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:16,128 INFO L225 Difference]: With dead ends: 103 [2022-11-26 00:00:16,128 INFO L226 Difference]: Without dead ends: 102 [2022-11-26 00:00:16,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:16,130 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:16,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-26 00:00:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2022-11-26 00:00:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 91 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2022-11-26 00:00:16,142 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 18 [2022-11-26 00:00:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:16,143 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2022-11-26 00:00:16,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2022-11-26 00:00:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:00:16,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:16,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:16,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:16,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:16,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash 997885928, now seen corresponding path program 1 times [2022-11-26 00:00:16,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:16,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622659742] [2022-11-26 00:00:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:16,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:16,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:16,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622659742] [2022-11-26 00:00:16,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622659742] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:16,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881978223] [2022-11-26 00:00:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:16,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:16,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:16,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:16,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:00:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:16,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:00:16,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:00:16,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:00:16,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881978223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:16,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:00:16,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-26 00:00:16,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363065181] [2022-11-26 00:00:16,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:16,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:16,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:16,513 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:16,534 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2022-11-26 00:00:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:16,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-26 00:00:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:16,535 INFO L225 Difference]: With dead ends: 92 [2022-11-26 00:00:16,536 INFO L226 Difference]: Without dead ends: 91 [2022-11-26 00:00:16,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:16,538 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:16,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 17 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:16,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-26 00:00:16,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-26 00:00:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 90 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2022-11-26 00:00:16,564 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 19 [2022-11-26 00:00:16,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:16,564 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2022-11-26 00:00:16,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2022-11-26 00:00:16,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-26 00:00:16,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:16,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:16,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:16,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:16,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:16,772 INFO L85 PathProgramCache]: Analyzing trace with hash 869692801, now seen corresponding path program 1 times [2022-11-26 00:00:16,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:16,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643589926] [2022-11-26 00:00:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:16,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:16,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643589926] [2022-11-26 00:00:16,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643589926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:16,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127744505] [2022-11-26 00:00:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:16,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:16,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:16,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:16,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:00:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:16,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:00:16,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:00:16,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:00:16,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127744505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:16,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:00:16,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-26 00:00:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612841527] [2022-11-26 00:00:16,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:16,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:16,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:16,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:16,915 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:16,944 INFO L93 Difference]: Finished difference Result 154 states and 192 transitions. [2022-11-26 00:00:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:16,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-26 00:00:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:16,946 INFO L225 Difference]: With dead ends: 154 [2022-11-26 00:00:16,946 INFO L226 Difference]: Without dead ends: 153 [2022-11-26 00:00:16,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:16,947 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:16,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 35 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-26 00:00:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 148. [2022-11-26 00:00:16,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 142 states have (on average 1.3450704225352113) internal successors, (191), 147 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 191 transitions. [2022-11-26 00:00:16,962 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 191 transitions. Word has length 20 [2022-11-26 00:00:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:16,963 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 191 transitions. [2022-11-26 00:00:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 191 transitions. [2022-11-26 00:00:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-26 00:00:16,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:16,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:16,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:17,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:00:17,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:17,170 INFO L85 PathProgramCache]: Analyzing trace with hash -991534724, now seen corresponding path program 1 times [2022-11-26 00:00:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:17,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948365796] [2022-11-26 00:00:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:17,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:00:17,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:17,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948365796] [2022-11-26 00:00:17,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948365796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:17,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062707939] [2022-11-26 00:00:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:17,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:17,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:17,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:17,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:00:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:17,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:00:17,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:00:17,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:00:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:00:17,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062707939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:00:17,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1254404071] [2022-11-26 00:00:17,317 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-26 00:00:17,317 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:00:17,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:00:17,319 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:00:17,319 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:00:18,176 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:00:19,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1254404071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:19,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:00:19,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 17 [2022-11-26 00:00:19,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516722268] [2022-11-26 00:00:19,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:00:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:00:19,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:00:19,039 INFO L87 Difference]: Start difference. First operand 148 states and 191 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:19,485 INFO L93 Difference]: Finished difference Result 151 states and 191 transitions. [2022-11-26 00:00:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:00:19,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-26 00:00:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:19,486 INFO L225 Difference]: With dead ends: 151 [2022-11-26 00:00:19,486 INFO L226 Difference]: Without dead ends: 149 [2022-11-26 00:00:19,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:00:19,488 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:19,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:00:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-26 00:00:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2022-11-26 00:00:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 137 states have (on average 1.3357664233576643) internal successors, (183), 142 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 183 transitions. [2022-11-26 00:00:19,499 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 183 transitions. Word has length 24 [2022-11-26 00:00:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:19,500 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 183 transitions. [2022-11-26 00:00:19,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 183 transitions. [2022-11-26 00:00:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-26 00:00:19,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:19,501 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:00:19,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:19,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-26 00:00:19,711 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:19,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash -672805281, now seen corresponding path program 1 times [2022-11-26 00:00:19,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:19,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158142269] [2022-11-26 00:00:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:19,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-26 00:00:19,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:19,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158142269] [2022-11-26 00:00:19,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158142269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:19,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869756511] [2022-11-26 00:00:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:19,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:19,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:19,804 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:19,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:00:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:19,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:00:19,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-26 00:00:19,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:00:19,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869756511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:19,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:00:19,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-26 00:00:19,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068259657] [2022-11-26 00:00:19,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:19,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:19,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:19,881 INFO L87 Difference]: Start difference. First operand 143 states and 183 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:19,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:19,905 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2022-11-26 00:00:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:19,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-26 00:00:19,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:19,906 INFO L225 Difference]: With dead ends: 143 [2022-11-26 00:00:19,906 INFO L226 Difference]: Without dead ends: 142 [2022-11-26 00:00:19,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:19,907 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:19,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-26 00:00:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 129. [2022-11-26 00:00:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.3225806451612903) internal successors, (164), 128 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 164 transitions. [2022-11-26 00:00:19,919 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 164 transitions. Word has length 25 [2022-11-26 00:00:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:19,919 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 164 transitions. [2022-11-26 00:00:19,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 164 transitions. [2022-11-26 00:00:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-26 00:00:19,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:19,920 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:00:19,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-26 00:00:20,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:20,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1951873551, now seen corresponding path program 1 times [2022-11-26 00:00:20,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:20,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040094371] [2022-11-26 00:00:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:20,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-26 00:00:20,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:20,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040094371] [2022-11-26 00:00:20,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040094371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:20,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327893769] [2022-11-26 00:00:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:20,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:20,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:20,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:20,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-26 00:00:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:20,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:00:20,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-26 00:00:20,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:00:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-26 00:00:20,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327893769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:00:20,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1540433321] [2022-11-26 00:00:20,276 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-26 00:00:20,277 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:00:20,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:00:20,277 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:00:20,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:00:21,152 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:00:21,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1540433321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:21,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:00:21,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4, 4] total 18 [2022-11-26 00:00:21,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057011142] [2022-11-26 00:00:21,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:21,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-26 00:00:21,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-26 00:00:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:00:21,686 INFO L87 Difference]: Start difference. First operand 129 states and 164 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:22,016 INFO L93 Difference]: Finished difference Result 134 states and 165 transitions. [2022-11-26 00:00:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:00:22,017 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-26 00:00:22,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:22,018 INFO L225 Difference]: With dead ends: 134 [2022-11-26 00:00:22,018 INFO L226 Difference]: Without dead ends: 131 [2022-11-26 00:00:22,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:00:22,020 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:22,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:00:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-26 00:00:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 110. [2022-11-26 00:00:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.3047619047619048) internal successors, (137), 109 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 137 transitions. [2022-11-26 00:00:22,040 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 137 transitions. Word has length 31 [2022-11-26 00:00:22,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:22,041 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 137 transitions. [2022-11-26 00:00:22,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 137 transitions. [2022-11-26 00:00:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:00:22,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:22,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-26 00:00:22,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:22,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-26 00:00:22,259 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash -378537839, now seen corresponding path program 1 times [2022-11-26 00:00:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:22,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060817129] [2022-11-26 00:00:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-26 00:00:22,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:22,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060817129] [2022-11-26 00:00:22,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060817129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:22,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979955520] [2022-11-26 00:00:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:22,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:22,301 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:22,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-26 00:00:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:22,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:00:22,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:00:22,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:00:22,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979955520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:22,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:00:22,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-26 00:00:22,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849746662] [2022-11-26 00:00:22,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:22,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:22,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:22,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:22,367 INFO L87 Difference]: Start difference. First operand 110 states and 137 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:22,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:22,392 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2022-11-26 00:00:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:22,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-26 00:00:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:22,393 INFO L225 Difference]: With dead ends: 110 [2022-11-26 00:00:22,393 INFO L226 Difference]: Without dead ends: 109 [2022-11-26 00:00:22,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:22,394 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:22,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:22,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-26 00:00:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 94. [2022-11-26 00:00:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 90 states have (on average 1.3) internal successors, (117), 93 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2022-11-26 00:00:22,405 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 32 [2022-11-26 00:00:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:22,405 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2022-11-26 00:00:22,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2022-11-26 00:00:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-26 00:00:22,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:22,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:22,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:22,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-26 00:00:22,612 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:22,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1033853509, now seen corresponding path program 1 times [2022-11-26 00:00:22,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:22,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947322317] [2022-11-26 00:00:22,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:22,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-26 00:00:22,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:22,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947322317] [2022-11-26 00:00:22,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947322317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:22,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789819304] [2022-11-26 00:00:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:22,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:22,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:22,662 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:22,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 00:00:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:22,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:00:22,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-26 00:00:22,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:00:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-26 00:00:22,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789819304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:00:22,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1116413817] [2022-11-26 00:00:22,750 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-26 00:00:22,752 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:00:22,752 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:00:22,752 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:00:22,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:00:23,685 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:00:24,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1116413817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:24,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:00:24,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 20 [2022-11-26 00:00:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916087315] [2022-11-26 00:00:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:24,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 00:00:24,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 00:00:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:00:24,159 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:24,456 INFO L93 Difference]: Finished difference Result 96 states and 119 transitions. [2022-11-26 00:00:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:00:24,458 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-26 00:00:24,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:24,458 INFO L225 Difference]: With dead ends: 96 [2022-11-26 00:00:24,458 INFO L226 Difference]: Without dead ends: 94 [2022-11-26 00:00:24,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-26 00:00:24,459 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:24,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:00:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-26 00:00:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2022-11-26 00:00:24,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.25) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-11-26 00:00:24,471 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 36 [2022-11-26 00:00:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:24,471 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-11-26 00:00:24,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2022-11-26 00:00:24,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-26 00:00:24,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:24,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-11-26 00:00:24,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:24,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-26 00:00:24,678 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:24,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1468809271, now seen corresponding path program 1 times [2022-11-26 00:00:24,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:24,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377143014] [2022-11-26 00:00:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:24,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-26 00:00:24,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:24,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377143014] [2022-11-26 00:00:24,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377143014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:24,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034372206] [2022-11-26 00:00:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:24,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:24,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:24,731 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:24,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-26 00:00:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:24,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-26 00:00:24,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:00:24,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:00:24,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034372206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:24,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:00:24,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-26 00:00:24,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466797519] [2022-11-26 00:00:24,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:24,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:00:24,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:24,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:00:24,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:24,839 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:24,858 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2022-11-26 00:00:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:00:24,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-26 00:00:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:24,860 INFO L225 Difference]: With dead ends: 54 [2022-11-26 00:00:24,860 INFO L226 Difference]: Without dead ends: 53 [2022-11-26 00:00:24,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:00:24,861 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:24,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:24,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-26 00:00:24,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-11-26 00:00:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.24) internal successors, (62), 50 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2022-11-26 00:00:24,896 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 39 [2022-11-26 00:00:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:24,896 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2022-11-26 00:00:24,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2022-11-26 00:00:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-26 00:00:24,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:24,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:00:24,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:25,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:25,103 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:25,103 INFO L85 PathProgramCache]: Analyzing trace with hash 429673851, now seen corresponding path program 1 times [2022-11-26 00:00:25,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:25,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709025389] [2022-11-26 00:00:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:25,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-26 00:00:25,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:25,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709025389] [2022-11-26 00:00:25,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709025389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615098250] [2022-11-26 00:00:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:25,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:25,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:25,165 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:25,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-26 00:00:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:25,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:00:25,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-26 00:00:25,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:00:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-26 00:00:25,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615098250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:00:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [102529424] [2022-11-26 00:00:25,266 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-26 00:00:25,268 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:00:25,268 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:00:25,268 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:00:25,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:00:26,218 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:00:26,734 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6003#(and (not (<= 0 (+ 2147483649 |ULTIMATE.start_main_~b~0#1|))) (<= |ULTIMATE.start_main_~d~0#1| 2147483647) (<= |ULTIMATE.start_main_~e~0#1| 2147483647) (<= 6 |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 6 |ULTIMATE.start_main_~e~0#1|) (<= 6 |ULTIMATE.start_main_~c~0#1|) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:00:26,734 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:00:26,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:00:26,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-26 00:00:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383755449] [2022-11-26 00:00:26,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:00:26,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:00:26,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:26,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:00:26,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:00:26,737 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:26,787 INFO L93 Difference]: Finished difference Result 126 states and 157 transitions. [2022-11-26 00:00:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:00:26,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-26 00:00:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:26,788 INFO L225 Difference]: With dead ends: 126 [2022-11-26 00:00:26,788 INFO L226 Difference]: Without dead ends: 78 [2022-11-26 00:00:26,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:00:26,791 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:26,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 37 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-26 00:00:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-26 00:00:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.155844155844156) internal successors, (89), 77 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2022-11-26 00:00:26,806 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 50 [2022-11-26 00:00:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:26,806 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2022-11-26 00:00:26,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2022-11-26 00:00:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:00:26,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:00:26,807 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:00:26,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:27,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-26 00:00:27,011 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-26 00:00:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:00:27,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1838559769, now seen corresponding path program 2 times [2022-11-26 00:00:27,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:00:27,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391314269] [2022-11-26 00:00:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:00:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:00:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:00:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 135 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-26 00:00:27,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:00:27,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391314269] [2022-11-26 00:00:27,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391314269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:00:27,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706720487] [2022-11-26 00:00:27,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:00:27,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:00:27,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:00:27,086 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:00:27,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-26 00:00:27,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-26 00:00:27,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:00:27,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:00:27,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:00:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-26 00:00:27,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:00:27,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706720487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:27,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:00:27,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-26 00:00:27,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298818063] [2022-11-26 00:00:27,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:27,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:00:27,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:00:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:00:27,228 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:00:27,265 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2022-11-26 00:00:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:00:27,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-26 00:00:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:00:27,267 INFO L225 Difference]: With dead ends: 102 [2022-11-26 00:00:27,267 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:00:27,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:00:27,268 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:00:27,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:00:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:00:27,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:00:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:00:27,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2022-11-26 00:00:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:00:27,270 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:00:27,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:00:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:00:27,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:00:27,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2022-11-26 00:00:27,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-26 00:00:27,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-26 00:00:27,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-26 00:00:27,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-26 00:00:27,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-26 00:00:27,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-26 00:00:27,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-26 00:00:27,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-26 00:00:27,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-11-26 00:00:27,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-26 00:00:27,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-26 00:00:27,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 00:00:29,044 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-11-26 00:00:29,044 INFO L899 garLoopResultBuilder]: For program point L27-2(lines 27 29) no Hoare annotation was computed. [2022-11-26 00:00:29,044 INFO L899 garLoopResultBuilder]: For program point L27-3(line 27) no Hoare annotation was computed. [2022-11-26 00:00:29,045 INFO L895 garLoopResultBuilder]: At program point L27-4(lines 27 29) the Hoare annotation is: (let ((.cse1 (< |ULTIMATE.start_main_~b~0#1| 6)) (.cse5 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~e~0#1| 2147483647)) (.cse4 (<= 1 |ULTIMATE.start_main_~e~0#1|)) (.cse0 (< |ULTIMATE.start_main_~d~0#1| 6)) (.cse14 (= |ULTIMATE.start_main_~b~0#1| 0)) (.cse3 (< |ULTIMATE.start_main_~a~0#1| 6)) (.cse6 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse7 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (< |ULTIMATE.start_main_~c~0#1| 6)) (.cse10 (<= 0 |#StackHeapBarrier|)) (.cse11 (<= 0 |ULTIMATE.start_main_~d~0#1|)) (.cse12 (= |#NULL.base| 0)) (.cse13 (= |ULTIMATE.start_main_~e~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse3 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse14 .cse2 .cse3 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse14 .cse3 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))) [2022-11-26 00:00:29,045 INFO L899 garLoopResultBuilder]: For program point L23-2(lines 23 33) no Hoare annotation was computed. [2022-11-26 00:00:29,045 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-11-26 00:00:29,045 INFO L895 garLoopResultBuilder]: At program point L23-4(lines 23 33) the Hoare annotation is: (and (<= 6 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= |ULTIMATE.start_main_~d~0#1| 2147483647) (<= |ULTIMATE.start_main_~e~0#1| 2147483647) (<= 6 |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 6 |ULTIMATE.start_main_~e~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2147483647) (<= 6 |ULTIMATE.start_main_~c~0#1|) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-26 00:00:29,046 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-26 00:00:29,046 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2022-11-26 00:00:29,046 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 00:00:29,046 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-26 00:00:29,046 INFO L899 garLoopResultBuilder]: For program point L24-2(lines 24 32) no Hoare annotation was computed. [2022-11-26 00:00:29,046 INFO L899 garLoopResultBuilder]: For program point L24-3(line 24) no Hoare annotation was computed. [2022-11-26 00:00:29,047 INFO L895 garLoopResultBuilder]: At program point L24-4(lines 24 32) the Hoare annotation is: (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= |ULTIMATE.start_main_~d~0#1| 2147483647)) (.cse2 (<= |ULTIMATE.start_main_~e~0#1| 2147483647)) (.cse3 (< |ULTIMATE.start_main_~a~0#1| 6)) (.cse4 (<= 6 |ULTIMATE.start_main_~d~0#1|)) (.cse5 (<= |ULTIMATE.start_main_~c~0#1| 2147483647)) (.cse6 (<= |#NULL.offset| 0)) (.cse7 (<= 6 |ULTIMATE.start_main_~e~0#1|)) (.cse8 (<= |#NULL.base| 0)) (.cse9 (<= 6 |ULTIMATE.start_main_~c~0#1|)) (.cse10 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse11 (<= 0 |#NULL.offset|)) (.cse12 (<= 0 |#StackHeapBarrier|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse7 (<= |ULTIMATE.start_main_~b~0#1| 2147483647) .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 (= |ULTIMATE.start_main_~b~0#1| 0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) [2022-11-26 00:00:29,047 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-26 00:00:29,047 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2022-11-26 00:00:29,047 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 00:00:29,047 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-26 00:00:29,047 INFO L899 garLoopResultBuilder]: For program point L25-2(lines 25 31) no Hoare annotation was computed. [2022-11-26 00:00:29,048 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-11-26 00:00:29,048 INFO L895 garLoopResultBuilder]: At program point L25-4(lines 25 31) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~d~0#1| 2147483647)) (.cse1 (<= |ULTIMATE.start_main_~e~0#1| 2147483647)) (.cse2 (< |ULTIMATE.start_main_~a~0#1| 6)) (.cse3 (<= 6 |ULTIMATE.start_main_~d~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~c~0#1| 2147483647)) (.cse5 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse6 (<= 6 |ULTIMATE.start_main_~e~0#1|)) (.cse7 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (<= 0 |#StackHeapBarrier|)) (.cse10 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~b~0#1| 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 (< |ULTIMATE.start_main_~b~0#1| 6) .cse1 .cse2 .cse3 .cse4 (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10))) [2022-11-26 00:00:29,048 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-26 00:00:29,048 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-11-26 00:00:29,048 INFO L899 garLoopResultBuilder]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2022-11-26 00:00:29,049 INFO L899 garLoopResultBuilder]: For program point L26-3(line 26) no Hoare annotation was computed. [2022-11-26 00:00:29,049 INFO L895 garLoopResultBuilder]: At program point L26-4(lines 26 30) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~d~0#1| 2147483647)) (.cse1 (<= |ULTIMATE.start_main_~e~0#1| 2147483647)) (.cse2 (< |ULTIMATE.start_main_~a~0#1| 6)) (.cse3 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse4 (<= 6 |ULTIMATE.start_main_~e~0#1|)) (.cse5 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse6 (= |#NULL.offset| 0)) (.cse7 (< |ULTIMATE.start_main_~c~0#1| 6)) (.cse8 (<= 0 |#StackHeapBarrier|)) (.cse9 (<= 0 |ULTIMATE.start_main_~d~0#1|)) (.cse10 (= |#NULL.base| 0))) (or (and .cse0 (< |ULTIMATE.start_main_~b~0#1| 6) .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and (= |ULTIMATE.start_main_~b~0#1| 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10))) [2022-11-26 00:00:29,049 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-26 00:00:29,053 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:00:29,055 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:00:29,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:00:29 BoogieIcfgContainer [2022-11-26 00:00:29,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:00:29,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:00:29,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:00:29,078 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:00:29,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:12" (3/4) ... [2022-11-26 00:00:29,081 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:00:29,090 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-26 00:00:29,090 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-26 00:00:29,090 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-26 00:00:29,091 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:00:29,124 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:00:29,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:00:29,125 INFO L158 Benchmark]: Toolchain (without parser) took 17486.84ms. Allocated memory was 134.2MB in the beginning and 358.6MB in the end (delta: 224.4MB). Free memory was 73.7MB in the beginning and 219.4MB in the end (delta: -145.7MB). Peak memory consumption was 79.9MB. Max. memory is 16.1GB. [2022-11-26 00:00:29,126 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 105.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:00:29,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.75ms. Allocated memory was 134.2MB in the beginning and 201.3MB in the end (delta: 67.1MB). Free memory was 73.5MB in the beginning and 168.2MB in the end (delta: -94.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-26 00:00:29,126 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.28ms. Allocated memory is still 201.3MB. Free memory was 168.2MB in the beginning and 166.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:00:29,127 INFO L158 Benchmark]: Boogie Preprocessor took 41.13ms. Allocated memory is still 201.3MB. Free memory was 166.8MB in the beginning and 165.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:00:29,127 INFO L158 Benchmark]: RCFGBuilder took 415.39ms. Allocated memory is still 201.3MB. Free memory was 165.4MB in the beginning and 152.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:00:29,128 INFO L158 Benchmark]: TraceAbstraction took 16636.59ms. Allocated memory was 201.3MB in the beginning and 358.6MB in the end (delta: 157.3MB). Free memory was 152.1MB in the beginning and 221.5MB in the end (delta: -69.4MB). Peak memory consumption was 200.4MB. Max. memory is 16.1GB. [2022-11-26 00:00:29,128 INFO L158 Benchmark]: Witness Printer took 47.53ms. Allocated memory is still 358.6MB. Free memory was 221.5MB in the beginning and 219.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:00:29,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 105.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.75ms. Allocated memory was 134.2MB in the beginning and 201.3MB in the end (delta: 67.1MB). Free memory was 73.5MB in the beginning and 168.2MB in the end (delta: -94.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.28ms. Allocated memory is still 201.3MB. Free memory was 168.2MB in the beginning and 166.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.13ms. Allocated memory is still 201.3MB. Free memory was 166.8MB in the beginning and 165.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.39ms. Allocated memory is still 201.3MB. Free memory was 165.4MB in the beginning and 152.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16636.59ms. Allocated memory was 201.3MB in the beginning and 358.6MB in the end (delta: 157.3MB). Free memory was 152.1MB in the beginning and 221.5MB in the end (delta: -69.4MB). Peak memory consumption was 200.4MB. Max. memory is 16.1GB. * Witness Printer took 47.53ms. Allocated memory is still 358.6MB. Free memory was 221.5MB in the beginning and 219.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 16.5s, OverallIterations: 18, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 462 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 770 IncrementalHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 283 mSDtfsCounter, 770 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 769 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=10, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 143 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 47 NumberOfFragments, 435 HoareAnnotationTreeSize, 5 FomulaSimplifications, 3273 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8724 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 832 NumberOfCodeBlocks, 772 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 954 ConstructedInterpolants, 0 QuantifiedInterpolants, 1454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1084 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 36 InterpolantComputations, 13 PerfectInterpolantSequences, 1262/1286 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: OVERALL_TIME: 3.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 112, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 719, TOOLS_POST_TIME: 2.0s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 560, TOOLS_QUANTIFIERELIM_TIME: 1.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 1132, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 82, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 49, DOMAIN_WIDEN_TIME: 0.4s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 132, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 112, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 83, LOOP_SUMMARIZER_CACHE_MISSES: 83, LOOP_SUMMARIZER_OVERALL_TIME: 2.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 132, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 3611, DAG_COMPRESSION_RETAINED_NODES: 303, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((((((((((d <= 2147483647 && b < 6) && e <= 2147483647) && a < 6) && 1 <= b) && 0 <= c) && 6 <= e) && 0 <= a) && #NULL == 0) && c < 6) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= d) && #NULL == 0) || (((((((((((b == 0 && d <= 2147483647) && e <= 2147483647) && a < 6) && 0 <= c) && 6 <= e) && 0 <= a) && #NULL == 0) && c < 6) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= d) && #NULL == 0) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((((((b == 0 && d <= 2147483647) && e <= 2147483647) && a < 6) && 6 <= d) && c <= 2147483647) && 0 <= c) && 6 <= e) && 0 <= a) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((d <= 2147483647 && b < 6) && e <= 2147483647) && a < 6) && 6 <= d) && c <= 2147483647) && 1 <= b) && 0 <= c) && 6 <= e) && 0 <= a) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((((((((6 <= b && a <= 2147483647) && d <= 2147483647) && e <= 2147483647) && 6 <= d) && c <= 2147483647) && 6 <= e) && b <= 2147483647) && 6 <= c) && 0 <= a) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((((((((0 <= #NULL && d <= 2147483647) && e <= 2147483647) && a < 6) && 6 <= d) && c <= 2147483647) && #NULL <= 0) && 1 <= b) && 6 <= e) && b <= 2147483647) && #NULL <= 0) && 6 <= c) && 0 <= a) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((0 <= #NULL && b == 0) && d <= 2147483647) && e <= 2147483647) && a < 6) && 6 <= d) && c <= 2147483647) && #NULL <= 0) && 6 <= e) && #NULL <= 0) && 6 <= c) && 0 <= a) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((d < 6 && b < 6) && e <= 2147483647) && a < 6) && 1 <= e) && 1 <= b) && 0 <= c) && 0 <= a) && #NULL == 0) && c < 6) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= d) && #NULL == 0) || (((((((((((d < 6 && b < 6) && a < 6) && 1 <= b) && 0 <= c) && 0 <= a) && #NULL == 0) && c < 6) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= d) && #NULL == 0) && e == 0)) || (((((((((((d < 6 && b == 0) && e <= 2147483647) && a < 6) && 1 <= e) && 0 <= c) && 0 <= a) && #NULL == 0) && c < 6) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= d) && #NULL == 0)) || ((((((((((d < 6 && b == 0) && a < 6) && 0 <= c) && 0 <= a) && #NULL == 0) && c < 6) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= d) && #NULL == 0) && e == 0) RESULT: Ultimate proved your program to be correct! [2022-11-26 00:00:29,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb406273-5a75-48bf-8ae4-59ddc9900592/bin/utaipan-ByfvJB40ur/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 Writing output log to file Ultimate.log Result: TRUE