./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/copy-2-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/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_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/copy-2-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/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_7ad73a22-06e1-4ac4-a2fd-8affd392893d/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 d9e382438d8fbe8dfce0f613a239dc56836f436a035cb511dde070c4306eb1f9 --- 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 [2022-11-25 23:56:27,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:56:27,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:56:27,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:56:27,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:56:27,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:56:27,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:56:27,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:56:27,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:56:27,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:56:27,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:56:27,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:56:27,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:56:27,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:56:27,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:56:27,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:56:27,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:56:27,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:56:27,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:56:27,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:56:27,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:56:27,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:56:27,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:56:27,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:56:27,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:56:27,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:56:27,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:56:27,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:56:27,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:56:27,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:56:27,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:56:27,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:56:27,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:56:27,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:56:27,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:56:27,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:56:27,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:56:27,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:56:27,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:56:27,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:56:27,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:56:27,202 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 23:56:27,226 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:56:27,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:56:27,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:56:27,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:56:27,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:56:27,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:56:27,229 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:56:27,229 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:56:27,229 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:56:27,230 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:56:27,230 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:56:27,230 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:56:27,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:56:27,231 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:56:27,231 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:56:27,231 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:56:27,232 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:56:27,232 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:56:27,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:56:27,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:56:27,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:56:27,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:56:27,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:56:27,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:56:27,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:56:27,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:56:27,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:56:27,235 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:56:27,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:56:27,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:56:27,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:56:27,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:56:27,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:56:27,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:56:27,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:56:27,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:56:27,238 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:56:27,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:56:27,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:56:27,238 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:56:27,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:56:27,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:56:27,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:56:27,239 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_7ad73a22-06e1-4ac4-a2fd-8affd392893d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9e382438d8fbe8dfce0f613a239dc56836f436a035cb511dde070c4306eb1f9 [2022-11-25 23:56:27,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:56:27,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:56:27,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:56:27,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:56:27,546 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:56:27,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/array-multidimensional/copy-2-u.c [2022-11-25 23:56:30,749 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:56:30,936 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:56:30,937 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/sv-benchmarks/c/array-multidimensional/copy-2-u.c [2022-11-25 23:56:30,944 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/data/3460dae84/1c0d84e2d1e641de98156a183a9c0fea/FLAGdfb0f309e [2022-11-25 23:56:30,967 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/data/3460dae84/1c0d84e2d1e641de98156a183a9c0fea [2022-11-25 23:56:30,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:56:30,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:56:30,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:56:30,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:56:30,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:56:30,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:56:30" (1/1) ... [2022-11-25 23:56:30,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43221cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:30, skipping insertion in model container [2022-11-25 23:56:30,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:56:30" (1/1) ... [2022-11-25 23:56:30,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:56:31,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:56:31,157 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_7ad73a22-06e1-4ac4-a2fd-8affd392893d/sv-benchmarks/c/array-multidimensional/copy-2-u.c[320,333] [2022-11-25 23:56:31,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:56:31,195 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:56:31,213 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_7ad73a22-06e1-4ac4-a2fd-8affd392893d/sv-benchmarks/c/array-multidimensional/copy-2-u.c[320,333] [2022-11-25 23:56:31,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:56:31,236 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:56:31,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31 WrapperNode [2022-11-25 23:56:31,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:56:31,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:56:31,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:56:31,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:56:31,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,294 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2022-11-25 23:56:31,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:56:31,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:56:31,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:56:31,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:56:31,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:56:31,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:56:31,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:56:31,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:56:31,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (1/1) ... [2022-11-25 23:56:31,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:56:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:31,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:56:31,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:56:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:56:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:56:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:56:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:56:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:56:31,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:56:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:56:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:56:31,476 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:56:31,478 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:56:31,661 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:56:31,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:56:31,705 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 23:56:31,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:56:31 BoogieIcfgContainer [2022-11-25 23:56:31,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:56:31,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:56:31,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:56:31,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:56:31,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:56:30" (1/3) ... [2022-11-25 23:56:31,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f224a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:56:31, skipping insertion in model container [2022-11-25 23:56:31,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:56:31" (2/3) ... [2022-11-25 23:56:31,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f224a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:56:31, skipping insertion in model container [2022-11-25 23:56:31,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:56:31" (3/3) ... [2022-11-25 23:56:31,732 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-2-u.c [2022-11-25 23:56:31,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:56:31,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-25 23:56:31,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:56:31,820 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;@6348e0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:56:31,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-25 23:56:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 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) [2022-11-25 23:56:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:56:31,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:31,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:56:31,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:31,839 INFO L85 PathProgramCache]: Analyzing trace with hash 4364084, now seen corresponding path program 1 times [2022-11-25 23:56:31,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:31,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267044901] [2022-11-25 23:56:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:31,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:31,961 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:31,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778447749] [2022-11-25 23:56:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:31,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:31,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:31,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:31,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:56:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:32,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:56:32,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:32,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:56:32,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:32,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267044901] [2022-11-25 23:56:32,106 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:32,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778447749] [2022-11-25 23:56:32,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778447749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:56:32,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:56:32,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:56:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525647200] [2022-11-25 23:56:32,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:56:32,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:56:32,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:56:32,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:56:32,166 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 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, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-25 23:56:32,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:32,226 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-25 23:56:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:56:32,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2022-11-25 23:56:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:32,237 INFO L225 Difference]: With dead ends: 32 [2022-11-25 23:56:32,237 INFO L226 Difference]: Without dead ends: 28 [2022-11-25 23:56:32,241 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 [2022-11-25 23:56:32,249 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:32,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 12 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:56:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-25 23:56:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-25 23:56:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.736842105263158) internal successors, (33), 27 states have internal predecessors, (33), 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) [2022-11-25 23:56:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-11-25 23:56:32,281 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 4 [2022-11-25 23:56:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:32,282 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-11-25 23:56:32,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-25 23:56:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-11-25 23:56:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:56:32,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:32,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:56:32,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 23:56:32,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 23:56:32,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:32,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:32,491 INFO L85 PathProgramCache]: Analyzing trace with hash 4360698, now seen corresponding path program 1 times [2022-11-25 23:56:32,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:32,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040709083] [2022-11-25 23:56:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:32,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:32,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:32,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887601649] [2022-11-25 23:56:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:32,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:32,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:32,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:32,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:56:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:32,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:56:32,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:32,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:56:32,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:32,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040709083] [2022-11-25 23:56:32,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:32,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887601649] [2022-11-25 23:56:32,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887601649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:56:32,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:56:32,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:56:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016612871] [2022-11-25 23:56:32,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:56:32,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:56:32,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:56:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:56:32,585 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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) [2022-11-25 23:56:32,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:32,688 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-11-25 23:56:32,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:56:32,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2022-11-25 23:56:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:32,690 INFO L225 Difference]: With dead ends: 28 [2022-11-25 23:56:32,690 INFO L226 Difference]: Without dead ends: 25 [2022-11-25 23:56:32,691 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 [2022-11-25 23:56:32,692 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:32,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:56:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-25 23:56:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-25 23:56:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 24 states have internal predecessors, (30), 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) [2022-11-25 23:56:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-11-25 23:56:32,702 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 4 [2022-11-25 23:56:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:32,702 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-11-25 23:56:32,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2022-11-25 23:56:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-11-25 23:56:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:56:32,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:32,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:56:32,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:32,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:32,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:32,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:32,912 INFO L85 PathProgramCache]: Analyzing trace with hash 135286665, now seen corresponding path program 1 times [2022-11-25 23:56:32,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:32,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750437755] [2022-11-25 23:56:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:32,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:32,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:32,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106475404] [2022-11-25 23:56:32,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:32,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:32,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:32,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:32,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:56:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:33,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:56:33,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:33,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:56:33,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:33,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750437755] [2022-11-25 23:56:33,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:33,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106475404] [2022-11-25 23:56:33,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106475404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:56:33,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:56:33,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:56:33,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801550007] [2022-11-25 23:56:33,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:56:33,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:56:33,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:56:33,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:56:33,027 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-25 23:56:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:33,101 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-11-25 23:56:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:56:33,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-25 23:56:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:33,106 INFO L225 Difference]: With dead ends: 49 [2022-11-25 23:56:33,106 INFO L226 Difference]: Without dead ends: 46 [2022-11-25 23:56:33,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:56:33,110 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:33,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 21 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:56:33,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-25 23:56:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-11-25 23:56:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 42 states have internal predecessors, (56), 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) [2022-11-25 23:56:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 56 transitions. [2022-11-25 23:56:33,136 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 56 transitions. Word has length 5 [2022-11-25 23:56:33,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:33,137 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 56 transitions. [2022-11-25 23:56:33,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-25 23:56:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 56 transitions. [2022-11-25 23:56:33,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:56:33,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:33,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:56:33,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:33,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-25 23:56:33,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:33,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:33,344 INFO L85 PathProgramCache]: Analyzing trace with hash 135181692, now seen corresponding path program 1 times [2022-11-25 23:56:33,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:33,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164770480] [2022-11-25 23:56:33,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:33,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:33,352 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:33,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461250670] [2022-11-25 23:56:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:33,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:33,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:33,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:33,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:56:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:33,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:56:33,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:33,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:56:33,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:33,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164770480] [2022-11-25 23:56:33,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:33,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461250670] [2022-11-25 23:56:33,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461250670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:56:33,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:56:33,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:56:33,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706657922] [2022-11-25 23:56:33,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:56:33,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:56:33,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:33,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:56:33,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:56:33,448 INFO L87 Difference]: Start difference. First operand 43 states and 56 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-25 23:56:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:33,534 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2022-11-25 23:56:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:56:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-11-25 23:56:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:33,536 INFO L225 Difference]: With dead ends: 82 [2022-11-25 23:56:33,536 INFO L226 Difference]: Without dead ends: 79 [2022-11-25 23:56:33,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:56:33,537 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:33,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:56:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-25 23:56:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2022-11-25 23:56:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 60 states have internal predecessors, (80), 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) [2022-11-25 23:56:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2022-11-25 23:56:33,548 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 5 [2022-11-25 23:56:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:33,548 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2022-11-25 23:56:33,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-25 23:56:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2022-11-25 23:56:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:56:33,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:33,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-11-25 23:56:33,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:33,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:33,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:33,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1481487560, now seen corresponding path program 1 times [2022-11-25 23:56:33,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:33,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867122638] [2022-11-25 23:56:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:33,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:33,765 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:33,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442543935] [2022-11-25 23:56:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:33,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:33,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:33,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:33,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:56:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:33,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:56:33,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:33,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:56:33,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:33,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867122638] [2022-11-25 23:56:33,923 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:33,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442543935] [2022-11-25 23:56:33,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442543935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:33,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [321784042] [2022-11-25 23:56:33,953 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:56:33,954 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:33,958 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:33,963 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:33,964 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:34,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:34,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:34,150 INFO L321 Elim1Store]: treesize reduction 90, result has 28.6 percent of original size [2022-11-25 23:56:34,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 61 [2022-11-25 23:56:34,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:34,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:34,266 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-25 23:56:34,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-25 23:56:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:34,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-25 23:56:34,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:34,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:34,605 INFO L321 Elim1Store]: treesize reduction 64, result has 9.9 percent of original size [2022-11-25 23:56:34,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 344 treesize of output 327 [2022-11-25 23:56:34,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:34,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:35,005 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:35,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [321784042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:56:35,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:56:35,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2022-11-25 23:56:35,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60855524] [2022-11-25 23:56:35,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:56:35,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:56:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:56:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:56:35,393 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2022-11-25 23:56:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:35,815 INFO L93 Difference]: Finished difference Result 114 states and 148 transitions. [2022-11-25 23:56:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:56:35,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 8 [2022-11-25 23:56:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:35,816 INFO L225 Difference]: With dead ends: 114 [2022-11-25 23:56:35,816 INFO L226 Difference]: Without dead ends: 61 [2022-11-25 23:56:35,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:56:35,818 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:35,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:56:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-25 23:56:35,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-11-25 23:56:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 58 states have internal predecessors, (75), 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) [2022-11-25 23:56:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2022-11-25 23:56:35,838 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 8 [2022-11-25 23:56:35,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:35,838 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2022-11-25 23:56:35,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2022-11-25 23:56:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2022-11-25 23:56:35,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:56:35,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:35,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:56:35,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:36,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:36,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:36,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash 890944061, now seen corresponding path program 1 times [2022-11-25 23:56:36,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:36,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169767148] [2022-11-25 23:56:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:36,058 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:36,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116789790] [2022-11-25 23:56:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:36,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:36,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:36,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:36,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:56:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:36,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:56:36,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:56:36,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:56:36,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:36,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169767148] [2022-11-25 23:56:36,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:36,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116789790] [2022-11-25 23:56:36,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116789790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:36,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [888540731] [2022-11-25 23:56:36,182 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:56:36,183 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:36,183 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:36,183 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:36,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:36,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:36,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:36,280 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-25 23:56:36,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-25 23:56:36,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:36,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:36,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 47 [2022-11-25 23:56:36,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:36,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-25 23:56:36,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:36,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:36,588 INFO L321 Elim1Store]: treesize reduction 70, result has 27.8 percent of original size [2022-11-25 23:56:36,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 336 treesize of output 329 [2022-11-25 23:56:37,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:37,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:37,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:37,440 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:37,823 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '875#(and (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1000) (= |#NULL.base| 0))' at error location [2022-11-25 23:56:37,823 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:56:37,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:56:37,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-25 23:56:37,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434248190] [2022-11-25 23:56:37,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:56:37,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:56:37,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:37,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:56:37,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:56:37,825 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-11-25 23:56:37,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:37,989 INFO L93 Difference]: Finished difference Result 159 states and 215 transitions. [2022-11-25 23:56:37,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:56:37,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 12 [2022-11-25 23:56:37,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:37,991 INFO L225 Difference]: With dead ends: 159 [2022-11-25 23:56:37,991 INFO L226 Difference]: Without dead ends: 106 [2022-11-25 23:56:37,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:56:37,992 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 91 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:37,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 36 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:56:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-25 23:56:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-11-25 23:56:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 102 states have internal predecessors, (119), 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) [2022-11-25 23:56:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2022-11-25 23:56:38,020 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 12 [2022-11-25 23:56:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:38,021 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2022-11-25 23:56:38,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-11-25 23:56:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2022-11-25 23:56:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 23:56:38,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:38,023 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1] [2022-11-25 23:56:38,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:38,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:38,229 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:38,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1080005108, now seen corresponding path program 1 times [2022-11-25 23:56:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:38,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396596403] [2022-11-25 23:56:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:38,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:38,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:38,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951395502] [2022-11-25 23:56:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:38,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:38,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:38,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:38,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:56:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:38,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:56:38,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:56:38,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:56:38,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:38,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396596403] [2022-11-25 23:56:38,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:38,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951395502] [2022-11-25 23:56:38,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951395502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:38,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1289939947] [2022-11-25 23:56:38,521 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:56:38,521 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:38,522 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:38,522 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:38,522 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:38,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:38,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:38,611 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-25 23:56:38,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-25 23:56:38,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:38,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:38,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 47 [2022-11-25 23:56:38,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:38,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-25 23:56:38,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:38,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:38,839 INFO L321 Elim1Store]: treesize reduction 70, result has 27.8 percent of original size [2022-11-25 23:56:38,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 336 treesize of output 329 [2022-11-25 23:56:39,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:39,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:39,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:39,505 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:39,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1289939947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:56:39,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:56:39,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 7] total 17 [2022-11-25 23:56:39,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479670487] [2022-11-25 23:56:39,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:56:39,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:56:39,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:39,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:56:39,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:56:39,815 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-25 23:56:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:40,074 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2022-11-25 23:56:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:56:40,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 27 [2022-11-25 23:56:40,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:40,080 INFO L225 Difference]: With dead ends: 103 [2022-11-25 23:56:40,080 INFO L226 Difference]: Without dead ends: 102 [2022-11-25 23:56:40,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:56:40,082 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:40,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:56:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-25 23:56:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-25 23:56:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 101 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) [2022-11-25 23:56:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2022-11-25 23:56:40,123 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 27 [2022-11-25 23:56:40,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:40,125 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2022-11-25 23:56:40,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-25 23:56:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2022-11-25 23:56:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 23:56:40,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:40,128 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:56:40,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:40,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 23:56:40,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2086023736, now seen corresponding path program 1 times [2022-11-25 23:56:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:40,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52697158] [2022-11-25 23:56:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:40,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:40,359 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:40,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652542681] [2022-11-25 23:56:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:40,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:40,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:40,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:40,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:56:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:40,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:56:40,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:56:40,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:56:40,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:40,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52697158] [2022-11-25 23:56:40,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:40,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652542681] [2022-11-25 23:56:40,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652542681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:40,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376860641] [2022-11-25 23:56:40,617 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-25 23:56:40,617 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:40,617 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:40,617 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:40,618 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:40,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:40,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:40,711 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-25 23:56:40,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-25 23:56:40,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:40,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:40,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 47 [2022-11-25 23:56:40,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:40,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-25 23:56:40,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:40,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:40,902 INFO L321 Elim1Store]: treesize reduction 64, result has 9.9 percent of original size [2022-11-25 23:56:40,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 344 treesize of output 327 [2022-11-25 23:56:41,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:41,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:41,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:41,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:41,431 INFO L321 Elim1Store]: treesize reduction 26, result has 38.1 percent of original size [2022-11-25 23:56:41,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2022-11-25 23:56:41,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:41,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:41,488 INFO L321 Elim1Store]: treesize reduction 34, result has 32.0 percent of original size [2022-11-25 23:56:41,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 121 [2022-11-25 23:56:41,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:41,552 INFO L321 Elim1Store]: treesize reduction 26, result has 38.1 percent of original size [2022-11-25 23:56:41,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2022-11-25 23:56:41,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:41,583 INFO L321 Elim1Store]: treesize reduction 26, result has 38.1 percent of original size [2022-11-25 23:56:41,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2022-11-25 23:56:41,592 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:46,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [376860641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:56:46,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:56:46,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 20 [2022-11-25 23:56:46,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356107581] [2022-11-25 23:56:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:56:46,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:56:46,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:46,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:56:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:56:46,490 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-25 23:56:49,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:49,529 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2022-11-25 23:56:49,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:56:49,529 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 28 [2022-11-25 23:56:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:49,530 INFO L225 Difference]: With dead ends: 137 [2022-11-25 23:56:49,530 INFO L226 Difference]: Without dead ends: 102 [2022-11-25 23:56:49,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=208, Invalid=494, Unknown=0, NotChecked=0, Total=702 [2022-11-25 23:56:49,531 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:49,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:56:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-25 23:56:49,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-25 23:56:49,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 101 states have internal predecessors, (112), 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) [2022-11-25 23:56:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2022-11-25 23:56:49,545 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 28 [2022-11-25 23:56:49,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:49,546 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2022-11-25 23:56:49,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-25 23:56:49,546 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2022-11-25 23:56:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-25 23:56:49,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:49,547 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1] [2022-11-25 23:56:49,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:49,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 23:56:49,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:49,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1751730305, now seen corresponding path program 2 times [2022-11-25 23:56:49,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:49,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174200415] [2022-11-25 23:56:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:49,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:49,770 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:49,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093604924] [2022-11-25 23:56:49,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:56:49,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:49,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:49,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:49,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 23:56:49,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 23:56:49,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:56:49,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:56:49,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 23:56:49,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 23:56:49,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:49,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174200415] [2022-11-25 23:56:49,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093604924] [2022-11-25 23:56:49,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093604924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034316965] [2022-11-25 23:56:49,949 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-25 23:56:49,949 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:49,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:49,949 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:49,949 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:49,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:49,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:50,025 INFO L321 Elim1Store]: treesize reduction 90, result has 28.6 percent of original size [2022-11-25 23:56:50,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 61 [2022-11-25 23:56:50,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:50,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:50,112 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-25 23:56:50,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-25 23:56:50,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:50,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-25 23:56:50,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:50,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:50,293 INFO L321 Elim1Store]: treesize reduction 64, result has 9.9 percent of original size [2022-11-25 23:56:50,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 344 treesize of output 327 [2022-11-25 23:56:50,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:50,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:50,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:50,710 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:55,433 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2404#(and (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1000) (= |#NULL.base| 0))' at error location [2022-11-25 23:56:55,433 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:56:55,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:56:55,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 23:56:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017959724] [2022-11-25 23:56:55,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:56:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:56:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:56:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:56:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:56:55,435 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-11-25 23:56:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:55,517 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2022-11-25 23:56:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:56:55,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 33 [2022-11-25 23:56:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:55,519 INFO L225 Difference]: With dead ends: 102 [2022-11-25 23:56:55,519 INFO L226 Difference]: Without dead ends: 99 [2022-11-25 23:56:55,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:56:55,520 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:55,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 8 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:56:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-25 23:56:55,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 80. [2022-11-25 23:56:55,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 1.141025641025641) internal successors, (89), 79 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) [2022-11-25 23:56:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2022-11-25 23:56:55,533 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 33 [2022-11-25 23:56:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:55,533 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2022-11-25 23:56:55,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-11-25 23:56:55,534 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2022-11-25 23:56:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 23:56:55,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:55,535 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:56:55,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:55,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:55,740 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-25 23:56:55,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash -654692080, now seen corresponding path program 1 times [2022-11-25 23:56:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:55,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262518472] [2022-11-25 23:56:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:55,753 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:56:55,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932089480] [2022-11-25 23:56:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:55,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:55,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:55,758 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:55,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 23:56:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:55,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:56:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-25 23:56:55,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-25 23:56:56,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:56,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262518472] [2022-11-25 23:56:56,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:56:56,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932089480] [2022-11-25 23:56:56,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932089480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:56,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440045659] [2022-11-25 23:56:56,029 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-25 23:56:56,029 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:56,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:56,029 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:56,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:56,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,133 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-25 23:56:56,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-25 23:56:56,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 47 [2022-11-25 23:56:56,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-25 23:56:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 62 [2022-11-25 23:56:56,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:56:56,830 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-11-25 23:56:56,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 428 treesize of output 372 [2022-11-25 23:56:56,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:57,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:57,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:57,228 INFO L321 Elim1Store]: treesize reduction 26, result has 38.1 percent of original size [2022-11-25 23:56:57,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2022-11-25 23:56:57,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:57,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:57,340 INFO L321 Elim1Store]: treesize reduction 109, result has 34.3 percent of original size [2022-11-25 23:56:57,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 108 treesize of output 127 [2022-11-25 23:56:57,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:57,459 INFO L321 Elim1Store]: treesize reduction 26, result has 38.1 percent of original size [2022-11-25 23:56:57,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2022-11-25 23:56:57,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:57,553 INFO L321 Elim1Store]: treesize reduction 26, result has 38.1 percent of original size [2022-11-25 23:56:57,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2022-11-25 23:56:57,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:56:57,619 INFO L321 Elim1Store]: treesize reduction 26, result has 38.1 percent of original size [2022-11-25 23:56:57,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2022-11-25 23:56:57,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-25 23:56:57,754 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:57:00,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1440045659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:57:00,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:57:00,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7] total 21 [2022-11-25 23:57:00,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35223878] [2022-11-25 23:57:00,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:57:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:57:00,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:57:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:57:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:57:00,746 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-11-25 23:57:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:57:01,238 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-11-25 23:57:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:57:01,238 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 44 [2022-11-25 23:57:01,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:57:01,239 INFO L225 Difference]: With dead ends: 80 [2022-11-25 23:57:01,239 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:57:01,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 99 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2022-11-25 23:57:01,241 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:57:01,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:57:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:57:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:57:01,242 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) [2022-11-25 23:57:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:57:01,242 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2022-11-25 23:57:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:57:01,242 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:57:01,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-11-25 23:57:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:57:01,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:57:01,246 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-25 23:57:01,246 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-25 23:57:01,246 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-25 23:57:01,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-25 23:57:01,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-25 23:57:01,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-25 23:57:01,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-25 23:57:01,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-25 23:57:01,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-25 23:57:01,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-25 23:57:01,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-25 23:57:01,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-25 23:57:01,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 23:57:01,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 23:57:01,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 23:57:04,279 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2022-11-25 23:57:04,279 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1000) (= |#NULL.base| 0)) [2022-11-25 23:57:04,280 INFO L899 garLoopResultBuilder]: For program point L27-3(lines 27 32) no Hoare annotation was computed. [2022-11-25 23:57:04,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-25 23:57:04,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2022-11-25 23:57:04,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 23:57:04,280 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2022-11-25 23:57:04,281 INFO L899 garLoopResultBuilder]: For program point L61-1(line 61) no Hoare annotation was computed. [2022-11-25 23:57:04,281 INFO L899 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2022-11-25 23:57:04,281 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2022-11-25 23:57:04,281 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2022-11-25 23:57:04,281 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2022-11-25 23:57:04,281 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2022-11-25 23:57:04,281 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2022-11-25 23:57:04,282 INFO L895 garLoopResultBuilder]: At program point L55-2(lines 55 64) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~#A~0#1.base|)) (.cse1 (= |ULTIMATE.start_main_~#A~0#1.offset| 0)) (.cse2 (= |#NULL.offset| 0)) (.cse3 (<= 0 |ULTIMATE.start_main_~#B~0#1.base|)) (.cse4 (= |ULTIMATE.start_main_~#B~0#1.offset| 0)) (.cse5 (<= 0 |#StackHeapBarrier|)) (.cse6 (= |ULTIMATE.start_main_~n~0#1| 1000)) (.cse7 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~j~0#1| 0) .cse4 .cse5 .cse6 .cse7) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0 (<= |ULTIMATE.start_main_~i~0#1| 2147483646) .cse1 (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2022-11-25 23:57:04,282 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-11-25 23:57:04,282 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 63) no Hoare annotation was computed. [2022-11-25 23:57:04,282 INFO L895 garLoopResultBuilder]: At program point L39-2(lines 39 48) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~#A~0#1.base|)) (.cse1 (= |ULTIMATE.start_main_~#A~0#1.offset| 0)) (.cse2 (= |#NULL.offset| 0)) (.cse3 (<= 0 |ULTIMATE.start_main_~#B~0#1.base|)) (.cse4 (= |ULTIMATE.start_main_~#B~0#1.offset| 0)) (.cse5 (<= 0 |#StackHeapBarrier|)) (.cse6 (= |ULTIMATE.start_main_~n~0#1| 1000)) (.cse7 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~j~0#1| 0) .cse4 .cse5 .cse6 .cse7) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0 (<= |ULTIMATE.start_main_~i~0#1| 2147483646) .cse1 (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2022-11-25 23:57:04,283 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-11-25 23:57:04,283 INFO L899 garLoopResultBuilder]: For program point L31-1(line 31) no Hoare annotation was computed. [2022-11-25 23:57:04,283 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 63) no Hoare annotation was computed. [2022-11-25 23:57:04,283 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 45) no Hoare annotation was computed. [2022-11-25 23:57:04,283 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 62) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1000) (= |#NULL.base| 0)) [2022-11-25 23:57:04,284 INFO L899 garLoopResultBuilder]: For program point L57-3(lines 57 62) no Hoare annotation was computed. [2022-11-25 23:57:04,284 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 46) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1000) (= |#NULL.base| 0)) [2022-11-25 23:57:04,284 INFO L899 garLoopResultBuilder]: For program point L41-3(lines 41 46) no Hoare annotation was computed. [2022-11-25 23:57:04,284 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2022-11-25 23:57:04,284 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 23:57:04,284 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 45) no Hoare annotation was computed. [2022-11-25 23:57:04,285 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 34) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#A~0#1.offset| 0)) (.cse2 (= |#NULL.offset| 0)) (.cse4 (= |ULTIMATE.start_main_~#B~0#1.offset| 0)) (.cse5 (= |ULTIMATE.start_main_~n~0#1| 1000)) (.cse6 (= |#NULL.base| 0))) (or (let ((.cse1 (* (mod (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1073741824) 4)) (.cse3 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= |ULTIMATE.start_main_~i~0#1| 0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#A~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#B~0#1.base|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| |ULTIMATE.start_main_~#A~0#1.base|) 1) (= (select |#valid| |ULTIMATE.start_main_~#B~0#1.base|) 1) .cse0 (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select |#length| |ULTIMATE.start_main_~#B~0#1.base|) .cse1) .cse2 (= (select .cse3 0) 48) (= (select |#length| |ULTIMATE.start_main_~#A~0#1.base|) .cse1) (not (= |ULTIMATE.start_main_~#B~0#1.base| |ULTIMATE.start_main_~#A~0#1.base|)) (= |ULTIMATE.start_main_~j~0#1| 0) .cse4 (= (select .cse3 1) 0) (< 0 |#StackHeapBarrier|) .cse5 .cse6)) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) .cse0 (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) .cse2 (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) .cse4 (<= 0 |#StackHeapBarrier|) .cse5 .cse6))) [2022-11-25 23:57:04,285 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2022-11-25 23:57:04,285 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-25 23:57:04,289 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:57:04,291 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:57:04,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:57:04 BoogieIcfgContainer [2022-11-25 23:57:04,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:57:04,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:57:04,335 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:57:04,336 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:57:04,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:56:31" (3/4) ... [2022-11-25 23:57:04,339 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:57:04,351 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-25 23:57:04,352 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-25 23:57:04,352 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 23:57:04,352 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:57:04,399 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:57:04,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:57:04,400 INFO L158 Benchmark]: Toolchain (without parser) took 33425.28ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 142.0MB in the beginning and 175.4MB in the end (delta: -33.5MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2022-11-25 23:57:04,400 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 134.2MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:57:04,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.91ms. Allocated memory is still 180.4MB. Free memory was 141.3MB in the beginning and 130.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:57:04,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.04ms. Allocated memory is still 180.4MB. Free memory was 130.8MB in the beginning and 129.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:57:04,402 INFO L158 Benchmark]: Boogie Preprocessor took 25.22ms. Allocated memory is still 180.4MB. Free memory was 129.4MB in the beginning and 128.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:57:04,402 INFO L158 Benchmark]: RCFGBuilder took 387.25ms. Allocated memory is still 180.4MB. Free memory was 128.0MB in the beginning and 112.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:57:04,402 INFO L158 Benchmark]: TraceAbstraction took 32623.26ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 112.0MB in the beginning and 178.6MB in the end (delta: -66.6MB). Peak memory consumption was 122.8MB. Max. memory is 16.1GB. [2022-11-25 23:57:04,403 INFO L158 Benchmark]: Witness Printer took 63.77ms. Allocated memory is still 262.1MB. Free memory was 177.5MB in the beginning and 175.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:57:04,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 134.2MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.91ms. Allocated memory is still 180.4MB. Free memory was 141.3MB in the beginning and 130.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.04ms. Allocated memory is still 180.4MB. Free memory was 130.8MB in the beginning and 129.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.22ms. Allocated memory is still 180.4MB. Free memory was 129.4MB in the beginning and 128.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 387.25ms. Allocated memory is still 180.4MB. Free memory was 128.0MB in the beginning and 112.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 32623.26ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 112.0MB in the beginning and 178.6MB in the end (delta: -66.6MB). Peak memory consumption was 122.8MB. Max. memory is 16.1GB. * Witness Printer took 63.77ms. Allocated memory is still 262.1MB. Free memory was 177.5MB in the beginning and 175.4MB 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: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: 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, 32 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 32.5s, OverallIterations: 10, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 329 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 329 mSDsluCounter, 130 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 174 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 705 IncrementalHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 174 mSolverCounterUnsat, 85 mSDtfsCounter, 705 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 476 GetRequests, 352 SyntacticMatches, 20 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=6, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 45 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 37 NumberOfFragments, 403 HoareAnnotationTreeSize, 6 FomulaSimplifications, 624 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1473 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 170 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 306 ConstructedInterpolants, 0 QuantifiedInterpolants, 920 SizeOfPredicates, 10 NumberOfNonLiveVariables, 938 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 362/620 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: 4.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 55, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 198, TOOLS_POST_TIME: 4.0s, 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: 195, TOOLS_QUANTIFIERELIM_TIME: 3.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 322, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 25, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 16, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 28, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 55, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 12, LOOP_SUMMARIZER_CACHE_MISSES: 12, LOOP_SUMMARIZER_OVERALL_TIME: 3.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 3.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 28, 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: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 748, DAG_COMPRESSION_RETAINED_NODES: 160, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && i == 0) && unknown-#StackHeapBarrier-unknown < A) && unknown-#StackHeapBarrier-unknown < B) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && \valid[A] == 1) && \valid[B] == 1) && A == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#length-unknown[B] == n * n % 1073741824 * 4) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#length-unknown[A] == n * n % 1073741824 * 4) && !(B == A)) && j == 0) && B == 0) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && n == 1000) && #NULL == 0) || (((((((((((1 <= i && 0 <= A) && i <= 2147483646) && A == 0) && n <= j) && j <= 2147483647) && #NULL == 0) && 0 <= B) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && n == 1000) && #NULL == 0) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((i == 0 && 0 <= A) && A == 0) && #NULL == 0) && 0 <= B) && j == 0) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && n == 1000) && #NULL == 0) || (((((((((((1 <= i && 0 <= A) && i <= 2147483646) && A == 0) && n <= j) && j <= 2147483647) && #NULL == 0) && 0 <= B) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && n == 1000) && #NULL == 0) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: (((((((((i == 0 && 0 <= A) && A == 0) && #NULL == 0) && 0 <= B) && j == 0) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && n == 1000) && #NULL == 0) || (((((((((((1 <= i && 0 <= A) && i <= 2147483646) && A == 0) && n <= j) && j <= 2147483647) && #NULL == 0) && 0 <= B) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && n == 1000) && #NULL == 0) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((((0 <= A && i <= 999) && 0 <= j) && A == 0) && 0 <= i) && j <= 2147483647) && #NULL == 0) && 0 <= B) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && n == 1000) && #NULL == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((0 <= A && i <= 999) && 0 <= j) && A == 0) && 0 <= i) && j <= 2147483647) && #NULL == 0) && 0 <= B) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && n == 1000) && #NULL == 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((0 <= A && i <= 999) && 0 <= j) && A == 0) && 0 <= i) && j <= 2147483647) && #NULL == 0) && 0 <= B) && B == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && n == 1000) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-25 23:57:04,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ad73a22-06e1-4ac4-a2fd-8affd392893d/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