./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8 --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 260b7a2a984aaf2c0588bea98c2bcc2ef220bdd7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_35| --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:34:55,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:34:55,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:34:55,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:34:55,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:34:55,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:34:55,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:34:55,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:34:55,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:34:55,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:34:55,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:34:55,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:34:55,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:34:55,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:34:55,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:34:55,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:34:55,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:34:55,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:34:55,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:34:55,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:34:55,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:34:55,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:34:55,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:34:55,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:34:55,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:34:55,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:34:55,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:34:55,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:34:55,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:34:55,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:34:55,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:34:55,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:34:55,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:34:55,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:34:55,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:34:55,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:34:55,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:34:55,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:34:55,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:34:55,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:34:55,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:34:55,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-13 07:34:55,700 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:34:55,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:34:55,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:34:55,703 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:34:55,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:34:55,703 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:34:55,703 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:34:55,704 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:34:55,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:34:55,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:34:55,712 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:34:55,712 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:34:55,712 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:34:55,713 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:34:55,713 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:34:55,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:34:55,714 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:34:55,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:34:55,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:34:55,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:34:55,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:34:55,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:34:55,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:34:55,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:34:55,716 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:34:55,716 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:34:55,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:34:55,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:34:55,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:34:55,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:34:55,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:34:55,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:34:55,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:34:55,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:34:55,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:34:55,720 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:34:55,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:34:55,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:34:55,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:34:55,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:34:55,721 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_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 260b7a2a984aaf2c0588bea98c2bcc2ef220bdd7 [2021-10-13 07:34:56,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:34:56,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:34:56,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:34:56,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:34:56,078 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:34:56,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-10-13 07:34:56,142 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/data/8c51b475c/8ff2a58942bf4a43a97ae6d884d63b5a/FLAG3f9f708d8 [2021-10-13 07:34:56,798 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:34:56,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-10-13 07:34:56,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/data/8c51b475c/8ff2a58942bf4a43a97ae6d884d63b5a/FLAG3f9f708d8 [2021-10-13 07:34:56,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/data/8c51b475c/8ff2a58942bf4a43a97ae6d884d63b5a [2021-10-13 07:34:56,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:34:56,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:34:56,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:34:56,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:34:56,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:34:56,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:56" (1/1) ... [2021-10-13 07:34:56,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10910192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:56, skipping insertion in model container [2021-10-13 07:34:57,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:56" (1/1) ... [2021-10-13 07:34:57,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:34:57,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:34:57,638 WARN L228 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_6324f43e-868a-46db-a702-0db7aaf4287f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-10-13 07:34:57,766 WARN L228 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_6324f43e-868a-46db-a702-0db7aaf4287f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-10-13 07:34:57,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:34:57,792 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:34:57,840 WARN L228 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_6324f43e-868a-46db-a702-0db7aaf4287f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-10-13 07:34:57,983 WARN L228 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_6324f43e-868a-46db-a702-0db7aaf4287f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-10-13 07:34:57,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:34:58,056 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:34:58,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58 WrapperNode [2021-10-13 07:34:58,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:34:58,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:34:58,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:34:58,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:34:58,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:34:58,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:34:58,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:34:58,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:34:58,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:34:58,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:34:58,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:34:58,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:34:58,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (1/1) ... [2021-10-13 07:34:58,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:34:58,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:34:58,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:34:58,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:34:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:34:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:34:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:34:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:34:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:34:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-13 07:34:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:34:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:34:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:34:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:34:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:35:04,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:35:04,793 INFO L299 CfgBuilder]: Removed 145 assume(true) statements. [2021-10-13 07:35:04,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:04 BoogieIcfgContainer [2021-10-13 07:35:04,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:35:04,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:35:04,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:35:04,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:35:04,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:34:56" (1/3) ... [2021-10-13 07:35:04,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6d0618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:04, skipping insertion in model container [2021-10-13 07:35:04,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:58" (2/3) ... [2021-10-13 07:35:04,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6d0618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:04, skipping insertion in model container [2021-10-13 07:35:04,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:04" (3/3) ... [2021-10-13 07:35:04,806 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-2.i [2021-10-13 07:35:04,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:35:04,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-13 07:35:04,870 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:35:04,876 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, mConcurrency=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 [2021-10-13 07:35:04,877 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-13 07:35:04,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 120 states have (on average 1.85) internal successors, (222), 130 states have internal predecessors, (222), 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) [2021-10-13 07:35:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:35:04,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:04,901 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:35:04,901 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 07:35:04,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:04,915 INFO L82 PathProgramCache]: Analyzing trace with hash 38508653, now seen corresponding path program 1 times [2021-10-13 07:35:04,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:04,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901028476] [2021-10-13 07:35:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:04,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:05,144 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:35:05,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237998898] [2021-10-13 07:35:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:05,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:05,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:35:05,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:35:05,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:35:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:05,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:35:05,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:05,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-10-13 07:35:05,626 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-13 07:35:05,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 31 [2021-10-13 07:35:06,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-10-13 07:35:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:06,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:06,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:06,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901028476] [2021-10-13 07:35:06,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:35:06,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237998898] [2021-10-13 07:35:06,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237998898] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:06,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:06,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 07:35:06,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109164052] [2021-10-13 07:35:06,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:35:06,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:06,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:35:06,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:35:06,416 INFO L87 Difference]: Start difference. First operand has 131 states, 120 states have (on average 1.85) internal successors, (222), 130 states have internal predecessors, (222), 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 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:19,012 INFO L93 Difference]: Finished difference Result 360 states and 631 transitions. [2021-10-13 07:35:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:35:19,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:35:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:19,028 INFO L225 Difference]: With dead ends: 360 [2021-10-13 07:35:19,028 INFO L226 Difference]: Without dead ends: 204 [2021-10-13 07:35:19,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:35:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-13 07:35:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 119. [2021-10-13 07:35:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 109 states have (on average 1.2660550458715596) internal successors, (138), 118 states have internal predecessors, (138), 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) [2021-10-13 07:35:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2021-10-13 07:35:19,086 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 4 [2021-10-13 07:35:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:19,087 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2021-10-13 07:35:19,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2021-10-13 07:35:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:35:19,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:19,089 INFO L512 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] [2021-10-13 07:35:19,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:19,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 07:35:19,315 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 07:35:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:19,315 INFO L82 PathProgramCache]: Analyzing trace with hash 597283780, now seen corresponding path program 1 times [2021-10-13 07:35:19,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:19,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636563452] [2021-10-13 07:35:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:19,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:19,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:19,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636563452] [2021-10-13 07:35:19,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636563452] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:19,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:19,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:35:19,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23949433] [2021-10-13 07:35:19,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:35:19,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:35:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:35:19,437 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-13 07:35:20,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:20,154 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2021-10-13 07:35:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:35:20,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 07:35:20,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:20,157 INFO L225 Difference]: With dead ends: 221 [2021-10-13 07:35:20,157 INFO L226 Difference]: Without dead ends: 165 [2021-10-13 07:35:20,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:35:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-13 07:35:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2021-10-13 07:35:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 109 states have (on average 1.2568807339449541) internal successors, (137), 118 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:35:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2021-10-13 07:35:20,172 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 24 [2021-10-13 07:35:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:20,173 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2021-10-13 07:35:20,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-13 07:35:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2021-10-13 07:35:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:35:20,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:20,174 INFO L512 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] [2021-10-13 07:35:20,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:35:20,175 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 07:35:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:20,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1777953293, now seen corresponding path program 1 times [2021-10-13 07:35:20,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:20,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722649246] [2021-10-13 07:35:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:20,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:20,200 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:35:20,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586039062] [2021-10-13 07:35:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:20,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:20,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:35:20,204 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:35:20,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:35:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:20,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:35:20,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:20,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:20,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:20,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722649246] [2021-10-13 07:35:20,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:35:20,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586039062] [2021-10-13 07:35:20,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586039062] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:20,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:20,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 07:35:20,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894223146] [2021-10-13 07:35:20,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:35:20,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:20,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:35:20,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:35:20,763 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2021-10-13 07:35:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:20,860 INFO L93 Difference]: Finished difference Result 275 states and 320 transitions. [2021-10-13 07:35:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:35:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 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) Word has length 28 [2021-10-13 07:35:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:20,864 INFO L225 Difference]: With dead ends: 275 [2021-10-13 07:35:20,864 INFO L226 Difference]: Without dead ends: 273 [2021-10-13 07:35:20,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 36.4ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:35:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-13 07:35:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 264. [2021-10-13 07:35:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 254 states have (on average 1.2322834645669292) internal successors, (313), 263 states have internal predecessors, (313), 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) [2021-10-13 07:35:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 313 transitions. [2021-10-13 07:35:20,889 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 313 transitions. Word has length 28 [2021-10-13 07:35:20,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:20,889 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 313 transitions. [2021-10-13 07:35:20,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2021-10-13 07:35:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 313 transitions. [2021-10-13 07:35:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 07:35:20,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:20,891 INFO L512 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] [2021-10-13 07:35:20,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:21,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:21,108 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 07:35:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash 718023191, now seen corresponding path program 1 times [2021-10-13 07:35:21,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:21,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367307644] [2021-10-13 07:35:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:21,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:21,151 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:35:21,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087111059] [2021-10-13 07:35:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:21,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:21,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:35:21,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:35:21,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:35:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:21,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:35:21,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:21,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:21,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:21,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367307644] [2021-10-13 07:35:21,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:35:21,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087111059] [2021-10-13 07:35:21,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087111059] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:21,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:21,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 07:35:21,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663153875] [2021-10-13 07:35:21,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:35:21,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:35:21,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:35:21,736 INFO L87 Difference]: Start difference. First operand 264 states and 313 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-10-13 07:35:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:21,786 INFO L93 Difference]: Finished difference Result 264 states and 313 transitions. [2021-10-13 07:35:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:35:21,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 29 [2021-10-13 07:35:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:21,788 INFO L225 Difference]: With dead ends: 264 [2021-10-13 07:35:21,789 INFO L226 Difference]: Without dead ends: 262 [2021-10-13 07:35:21,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:35:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-13 07:35:21,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-10-13 07:35:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 254 states have (on average 1.220472440944882) internal successors, (310), 261 states have internal predecessors, (310), 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) [2021-10-13 07:35:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 310 transitions. [2021-10-13 07:35:21,809 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 310 transitions. Word has length 29 [2021-10-13 07:35:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:21,810 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 310 transitions. [2021-10-13 07:35:21,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-10-13 07:35:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 310 transitions. [2021-10-13 07:35:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 07:35:21,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:21,812 INFO L512 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] [2021-10-13 07:35:21,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:22,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:22,025 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 07:35:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:22,026 INFO L82 PathProgramCache]: Analyzing trace with hash 783917853, now seen corresponding path program 1 times [2021-10-13 07:35:22,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:22,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453005365] [2021-10-13 07:35:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:22,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:22,054 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:35:22,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340429508] [2021-10-13 07:35:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:22,055 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:22,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:35:22,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:35:22,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:35:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:22,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:35:22,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:22,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:22,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:22,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453005365] [2021-10-13 07:35:22,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:35:22,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340429508] [2021-10-13 07:35:22,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340429508] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:22,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:22,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:35:22,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696941641] [2021-10-13 07:35:22,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:35:22,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:22,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:35:22,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:35:22,648 INFO L87 Difference]: Start difference. First operand 262 states and 310 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 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) [2021-10-13 07:35:22,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:22,811 INFO L93 Difference]: Finished difference Result 551 states and 649 transitions. [2021-10-13 07:35:22,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:35:22,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 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 30 [2021-10-13 07:35:22,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:22,815 INFO L225 Difference]: With dead ends: 551 [2021-10-13 07:35:22,815 INFO L226 Difference]: Without dead ends: 314 [2021-10-13 07:35:22,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:35:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-13 07:35:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2021-10-13 07:35:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 301 states have (on average 1.2093023255813953) internal successors, (364), 308 states have internal predecessors, (364), 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) [2021-10-13 07:35:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 364 transitions. [2021-10-13 07:35:22,837 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 364 transitions. Word has length 30 [2021-10-13 07:35:22,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:22,838 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 364 transitions. [2021-10-13 07:35:22,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 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) [2021-10-13 07:35:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 364 transitions. [2021-10-13 07:35:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 07:35:22,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:22,840 INFO L512 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] [2021-10-13 07:35:22,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:23,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:23,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 07:35:23,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:23,055 INFO L82 PathProgramCache]: Analyzing trace with hash -312215074, now seen corresponding path program 1 times [2021-10-13 07:35:23,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:23,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301212167] [2021-10-13 07:35:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:23,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:23,077 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:35:23,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158650997] [2021-10-13 07:35:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:23,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:23,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:35:23,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:35:23,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:35:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:23,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:35:23,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:23,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:35:23,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:23,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301212167] [2021-10-13 07:35:23,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:35:23,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158650997] [2021-10-13 07:35:23,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158650997] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:23,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:23,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:35:23,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841550740] [2021-10-13 07:35:23,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:35:23,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:35:23,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:35:23,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:35:23,608 INFO L87 Difference]: Start difference. First operand 309 states and 364 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2021-10-13 07:35:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:23,731 INFO L93 Difference]: Finished difference Result 609 states and 729 transitions. [2021-10-13 07:35:23,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:35:23,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) Word has length 35 [2021-10-13 07:35:23,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:23,735 INFO L225 Difference]: With dead ends: 609 [2021-10-13 07:35:23,736 INFO L226 Difference]: Without dead ends: 321 [2021-10-13 07:35:23,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:35:23,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-10-13 07:35:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-10-13 07:35:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 313 states have (on average 1.2012779552715656) internal successors, (376), 320 states have internal predecessors, (376), 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) [2021-10-13 07:35:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 376 transitions. [2021-10-13 07:35:23,754 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 376 transitions. Word has length 35 [2021-10-13 07:35:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:23,755 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 376 transitions. [2021-10-13 07:35:23,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 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) [2021-10-13 07:35:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 376 transitions. [2021-10-13 07:35:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:35:23,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:23,757 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:35:23,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:23,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 07:35:23,970 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 07:35:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:23,971 INFO L82 PathProgramCache]: Analyzing trace with hash -399788226, now seen corresponding path program 1 times [2021-10-13 07:35:23,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:35:23,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359788592] [2021-10-13 07:35:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:23,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:35:23,994 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:35:23,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513731358] [2021-10-13 07:35:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:23,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:23,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:35:24,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:35:24,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:35:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:24,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:35:24,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:35:24,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:35:24,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:35:24,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359788592] [2021-10-13 07:35:24,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:35:24,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513731358] [2021-10-13 07:35:24,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513731358] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:35:24,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [977530200] [2021-10-13 07:35:24,708 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-10-13 07:35:24,708 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:35:24,723 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:35:24,730 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:35:24,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:35:24,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,835 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:35:24,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:35:24,837 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:35:24,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:35:24,842 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:35:24,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:35:24,844 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:35:24,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:35:24,846 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:35:24,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:35:24,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-13 07:35:24,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:35:24,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:35:24,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-10-13 07:35:24,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-13 07:35:24,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-13 07:35:24,901 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:35:24,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:35:24,959 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:24,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-13 07:35:24,963 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:35:24,963 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:166, output treesize:162 [2021-10-13 07:35:25,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:25,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 07:35:25,179 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_35| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:35:25,182 INFO L168 Benchmark]: Toolchain (without parser) took 28195.26 ms. Allocated memory was 90.2 MB in the beginning and 220.2 MB in the end (delta: 130.0 MB). Free memory was 51.4 MB in the beginning and 81.7 MB in the end (delta: -30.3 MB). Peak memory consumption was 99.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:25,183 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:35:25,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1065.82 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 51.2 MB in the beginning and 78.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:25,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 201.69 ms. Allocated memory is still 127.9 MB. Free memory was 78.0 MB in the beginning and 69.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:25,184 INFO L168 Benchmark]: Boogie Preprocessor took 159.31 ms. Allocated memory is still 127.9 MB. Free memory was 69.6 MB in the beginning and 61.3 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:25,185 INFO L168 Benchmark]: RCFGBuilder took 6376.23 ms. Allocated memory was 127.9 MB in the beginning and 178.3 MB in the end (delta: 50.3 MB). Free memory was 61.3 MB in the beginning and 72.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:25,185 INFO L168 Benchmark]: TraceAbstraction took 20383.24 ms. Allocated memory was 178.3 MB in the beginning and 220.2 MB in the end (delta: 41.9 MB). Free memory was 71.7 MB in the beginning and 81.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:35:25,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1065.82 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 51.2 MB in the beginning and 78.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 201.69 ms. Allocated memory is still 127.9 MB. Free memory was 78.0 MB in the beginning and 69.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 159.31 ms. Allocated memory is still 127.9 MB. Free memory was 69.6 MB in the beginning and 61.3 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6376.23 ms. Allocated memory was 127.9 MB in the beginning and 178.3 MB in the end (delta: 50.3 MB). Free memory was 61.3 MB in the beginning and 72.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20383.24 ms. Allocated memory was 178.3 MB in the beginning and 220.2 MB in the end (delta: 41.9 MB). Free memory was 71.7 MB in the beginning and 81.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_35| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_35|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:35:25,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6324f43e-868a-46db-a702-0db7aaf4287f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...