./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7 --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 bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:16:42,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:16:42,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:16:42,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:16:42,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:16:42,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:16:42,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:16:42,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:16:42,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:16:42,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:16:42,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:16:42,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:16:42,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:16:42,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:16:42,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:16:42,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:16:42,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:16:42,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:16:42,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:16:42,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:16:42,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:16:42,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:16:42,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:16:42,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:16:42,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:16:42,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:16:42,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:16:42,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:16:42,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:16:42,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:16:42,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:16:42,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:16:42,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:16:42,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:16:42,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:16:42,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:16:42,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:16:42,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:16:42,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:16:42,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:16:42,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:16:42,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 18:16:42,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:16:42,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:16:42,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:16:42,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:16:42,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:16:42,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:16:42,375 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:16:42,375 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:16:42,376 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:16:42,376 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:16:42,376 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:16:42,376 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:16:42,377 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:16:42,377 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:16:42,377 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:16:42,378 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:16:42,378 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:16:42,378 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:16:42,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:16:42,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:16:42,380 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:16:42,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:16:42,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:16:42,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:16:42,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:16:42,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:16:42,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:16:42,382 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:16:42,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:16:42,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:16:42,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:16:42,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:16:42,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:16:42,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:16:42,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:16:42,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:16:42,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:16:42,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:16:42,385 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:16:42,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:16:42,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:16:42,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:16:42,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:16:42,386 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2021-11-25 18:16:42,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:16:42,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:16:42,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:16:42,636 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:16:42,637 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:16:42,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2021-11-25 18:16:42,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/data/dcf65053c/63fd3fdc91a0429b9d5015730466cb49/FLAG51664e640 [2021-11-25 18:16:43,402 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:16:43,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2021-11-25 18:16:43,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/data/dcf65053c/63fd3fdc91a0429b9d5015730466cb49/FLAG51664e640 [2021-11-25 18:16:43,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/data/dcf65053c/63fd3fdc91a0429b9d5015730466cb49 [2021-11-25 18:16:43,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:16:43,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:16:43,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:16:43,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:16:43,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:16:43,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:16:43" (1/1) ... [2021-11-25 18:16:43,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490baf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:43, skipping insertion in model container [2021-11-25 18:16:43,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:16:43" (1/1) ... [2021-11-25 18:16:43,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:16:43,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:16:44,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2021-11-25 18:16:44,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:16:44,446 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:16:44,478 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i[33021,33034] [2021-11-25 18:16:44,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:16:44,632 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:16:44,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44 WrapperNode [2021-11-25 18:16:44,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:16:44,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:16:44,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:16:44,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:16:44,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:44,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:44,788 INFO L137 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1451 [2021-11-25 18:16:44,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:16:44,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:16:44,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:16:44,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:16:44,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:44,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:44,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:44,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:44,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:44,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:44,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:45,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:16:45,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:16:45,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:16:45,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:16:45,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (1/1) ... [2021-11-25 18:16:45,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:16:45,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:16:45,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:16:45,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:16:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:16:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:16:45,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:16:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:16:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:16:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:16:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:16:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:16:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:16:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:16:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:16:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:16:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:16:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:16:45,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:16:45,448 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:16:45,450 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:16:46,815 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:16:47,306 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:16:47,306 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-11-25 18:16:47,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:16:47 BoogieIcfgContainer [2021-11-25 18:16:47,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:16:47,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:16:47,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:16:47,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:16:47,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:16:43" (1/3) ... [2021-11-25 18:16:47,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5270021b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:16:47, skipping insertion in model container [2021-11-25 18:16:47,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:16:44" (2/3) ... [2021-11-25 18:16:47,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5270021b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:16:47, skipping insertion in model container [2021-11-25 18:16:47,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:16:47" (3/3) ... [2021-11-25 18:16:47,327 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-3.i [2021-11-25 18:16:47,333 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:16:47,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-25 18:16:47,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:16:47,404 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:16:47,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 18:16:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 136 states have (on average 1.8088235294117647) internal successors, (246), 152 states have internal predecessors, (246), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 18:16:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 18:16:47,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:47,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 18:16:47,438 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:16:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2021-11-25 18:16:47,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:47,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383351285] [2021-11-25 18:16:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:47,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:47,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:16:47,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824308216] [2021-11-25 18:16:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:47,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:16:47,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:16:47,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:16:47,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:16:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:47,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:16:47,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:16:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:16:47,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:16:47,859 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:47,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383351285] [2021-11-25 18:16:47,859 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:16:47,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824308216] [2021-11-25 18:16:47,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824308216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:47,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:47,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:16:47,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412169563] [2021-11-25 18:16:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:47,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:16:47,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:16:47,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:47,898 INFO L87 Difference]: Start difference. First operand has 161 states, 136 states have (on average 1.8088235294117647) internal successors, (246), 152 states have internal predecessors, (246), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-25 18:16:51,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:16:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:16:51,930 INFO L93 Difference]: Finished difference Result 420 states and 734 transitions. [2021-11-25 18:16:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:16:51,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-25 18:16:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:16:51,947 INFO L225 Difference]: With dead ends: 420 [2021-11-25 18:16:51,947 INFO L226 Difference]: Without dead ends: 233 [2021-11-25 18:16:51,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:16:51,955 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 102 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:16:51,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 357 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-25 18:16:51,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-25 18:16:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 135. [2021-11-25 18:16:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 126 states have internal predecessors, (139), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 18:16:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 171 transitions. [2021-11-25 18:16:52,013 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 171 transitions. Word has length 3 [2021-11-25 18:16:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:16:52,013 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 171 transitions. [2021-11-25 18:16:52,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-25 18:16:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 171 transitions. [2021-11-25 18:16:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-25 18:16:52,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:52,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:16:52,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:16:52,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 18:16:52,225 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:16:52,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1598010711, now seen corresponding path program 1 times [2021-11-25 18:16:52,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:52,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467099427] [2021-11-25 18:16:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:52,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:52,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:16:52,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856274483] [2021-11-25 18:16:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:52,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:16:52,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:16:52,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:16:52,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:16:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:53,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:16:53,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:16:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:16:53,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:16:53,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:53,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467099427] [2021-11-25 18:16:53,880 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:16:53,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856274483] [2021-11-25 18:16:53,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856274483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:53,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:53,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:16:53,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687285725] [2021-11-25 18:16:53,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:53,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:16:53,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:16:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:16:53,886 INFO L87 Difference]: Start difference. First operand 135 states and 171 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-25 18:16:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:16:57,345 INFO L93 Difference]: Finished difference Result 233 states and 285 transitions. [2021-11-25 18:16:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:16:57,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-25 18:16:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:16:57,355 INFO L225 Difference]: With dead ends: 233 [2021-11-25 18:16:57,355 INFO L226 Difference]: Without dead ends: 232 [2021-11-25 18:16:57,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:16:57,357 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 59 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:16:57,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 463 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 18:16:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-25 18:16:57,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2021-11-25 18:16:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 201 states have (on average 1.1840796019900497) internal successors, (238), 215 states have internal predecessors, (238), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-25 18:16:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 282 transitions. [2021-11-25 18:16:57,383 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 282 transitions. Word has length 48 [2021-11-25 18:16:57,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:16:57,383 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 282 transitions. [2021-11-25 18:16:57,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-25 18:16:57,384 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 282 transitions. [2021-11-25 18:16:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 18:16:57,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:16:57,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:16:57,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:16:57,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:16:57,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:16:57,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:16:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2001274746, now seen corresponding path program 1 times [2021-11-25 18:16:57,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:16:57,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858060625] [2021-11-25 18:16:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:57,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:16:57,833 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:16:57,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039429961] [2021-11-25 18:16:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:16:57,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:16:57,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:16:57,839 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:16:57,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:16:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:16:59,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 3017 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:16:59,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:16:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:16:59,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:16:59,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:16:59,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858060625] [2021-11-25 18:16:59,316 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:16:59,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039429961] [2021-11-25 18:16:59,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039429961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:16:59,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:16:59,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:16:59,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900557136] [2021-11-25 18:16:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:16:59,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:16:59,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:16:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:16:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:16:59,319 INFO L87 Difference]: Start difference. First operand 230 states and 282 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-25 18:17:01,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:17:02,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:02,300 INFO L93 Difference]: Finished difference Result 230 states and 282 transitions. [2021-11-25 18:17:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:17:02,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-25 18:17:02,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:02,305 INFO L225 Difference]: With dead ends: 230 [2021-11-25 18:17:02,306 INFO L226 Difference]: Without dead ends: 229 [2021-11-25 18:17:02,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:02,308 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 86 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:02,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 304 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 18:17:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-25 18:17:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-11-25 18:17:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 201 states have (on average 1.1791044776119404) internal successors, (237), 214 states have internal predecessors, (237), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-25 18:17:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 281 transitions. [2021-11-25 18:17:02,341 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 281 transitions. Word has length 49 [2021-11-25 18:17:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:02,342 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 281 transitions. [2021-11-25 18:17:02,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-25 18:17:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 281 transitions. [2021-11-25 18:17:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 18:17:02,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:02,345 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:02,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:17:02,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:02,546 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:17:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash 920356912, now seen corresponding path program 1 times [2021-11-25 18:17:02,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:02,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065531129] [2021-11-25 18:17:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:02,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:02,742 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:17:02,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426361182] [2021-11-25 18:17:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:02,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:02,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:02,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:17:02,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:17:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:04,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:17:04,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:17:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:04,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:17:04,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:04,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065531129] [2021-11-25 18:17:04,407 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:17:04,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426361182] [2021-11-25 18:17:04,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426361182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:04,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:04,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:17:04,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83106031] [2021-11-25 18:17:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:04,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:17:04,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:17:04,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:04,415 INFO L87 Difference]: Start difference. First operand 229 states and 281 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:06,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:17:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:06,792 INFO L93 Difference]: Finished difference Result 384 states and 476 transitions. [2021-11-25 18:17:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:17:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-25 18:17:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:06,799 INFO L225 Difference]: With dead ends: 384 [2021-11-25 18:17:06,799 INFO L226 Difference]: Without dead ends: 227 [2021-11-25 18:17:06,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:06,803 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 38 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:06,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 289 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:17:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-25 18:17:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-25 18:17:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 199 states have (on average 1.1758793969849246) internal successors, (234), 212 states have internal predecessors, (234), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-25 18:17:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 278 transitions. [2021-11-25 18:17:06,825 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 278 transitions. Word has length 51 [2021-11-25 18:17:06,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:06,825 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 278 transitions. [2021-11-25 18:17:06,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 278 transitions. [2021-11-25 18:17:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 18:17:06,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:06,830 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:06,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:17:07,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:07,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:17:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1681483749, now seen corresponding path program 1 times [2021-11-25 18:17:07,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:07,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913045288] [2021-11-25 18:17:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:07,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:07,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:17:07,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048649083] [2021-11-25 18:17:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:07,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:07,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:07,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:17:07,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:17:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:08,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 2183 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:17:08,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:17:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 18:17:08,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:17:08,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:08,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913045288] [2021-11-25 18:17:08,613 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:17:08,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048649083] [2021-11-25 18:17:08,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048649083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:08,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:08,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:17:08,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815260791] [2021-11-25 18:17:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:08,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:17:08,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:17:08,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:08,616 INFO L87 Difference]: Start difference. First operand 227 states and 278 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 18:17:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:10,505 INFO L93 Difference]: Finished difference Result 426 states and 524 transitions. [2021-11-25 18:17:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:17:10,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2021-11-25 18:17:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:10,519 INFO L225 Difference]: With dead ends: 426 [2021-11-25 18:17:10,519 INFO L226 Difference]: Without dead ends: 225 [2021-11-25 18:17:10,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:10,521 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 11 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:10,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 286 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 18:17:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-25 18:17:10,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-25 18:17:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 197 states have (on average 1.1725888324873097) internal successors, (231), 210 states have internal predecessors, (231), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-25 18:17:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 275 transitions. [2021-11-25 18:17:10,542 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 275 transitions. Word has length 64 [2021-11-25 18:17:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:10,542 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 275 transitions. [2021-11-25 18:17:10,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 18:17:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 275 transitions. [2021-11-25 18:17:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 18:17:10,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:10,545 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:10,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:17:10,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:10,763 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:17:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:10,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1167209906, now seen corresponding path program 1 times [2021-11-25 18:17:10,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:10,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501793136] [2021-11-25 18:17:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:10,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:10,864 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:17:10,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990533732] [2021-11-25 18:17:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:10,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:10,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:10,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:17:10,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebecbf42-ab00-47bf-bdca-7d4da9a746f1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process