./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs --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 6bfcfa7f4be4b5db7fff91c88a93b89c5a8659bc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 03:19:14,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:19:14,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:19:14,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:19:14,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:19:14,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:19:14,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:19:14,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:19:14,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:19:14,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:19:14,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:19:14,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:19:14,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:19:14,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:19:14,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:19:14,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:19:14,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:19:14,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:19:14,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:19:14,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:19:14,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:19:14,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:19:14,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:19:14,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:19:14,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:19:14,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:19:14,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:19:14,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:19:14,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:19:14,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:19:14,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:19:14,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:19:14,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:19:14,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:19:14,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:19:14,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:19:14,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:19:14,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:19:14,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:19:14,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:19:14,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:19:14,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-16 03:19:14,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:19:14,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:19:14,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:19:14,608 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:19:14,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:19:14,608 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:19:14,609 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:19:14,609 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:19:14,609 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:19:14,609 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:19:14,611 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:19:14,611 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:19:14,611 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:19:14,612 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:19:14,612 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:19:14,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:19:14,613 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:19:14,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 03:19:14,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:19:14,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:19:14,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:19:14,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:19:14,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:19:14,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:19:14,615 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-16 03:19:14,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:19:14,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:19:14,616 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:19:14,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:19:14,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:19:14,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:19:14,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:19:14,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:19:14,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:19:14,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:19:14,629 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:19:14,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:19:14,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:19:14,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:19:14,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:19:14,630 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_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bfcfa7f4be4b5db7fff91c88a93b89c5a8659bc [2021-10-16 03:19:14,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:19:14,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:19:14,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:19:14,989 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:19:14,990 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:19:14,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i [2021-10-16 03:19:15,082 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/data/2b369803f/44cdcea5bd5e4edd86492f1cd6218cba/FLAGddae0f1cf [2021-10-16 03:19:15,722 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:19:15,722 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i [2021-10-16 03:19:15,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/data/2b369803f/44cdcea5bd5e4edd86492f1cd6218cba/FLAGddae0f1cf [2021-10-16 03:19:15,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/data/2b369803f/44cdcea5bd5e4edd86492f1cd6218cba [2021-10-16 03:19:15,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:19:15,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:19:15,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:19:15,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:19:15,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:19:15,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:19:15" (1/1) ... [2021-10-16 03:19:15,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cffeaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:15, skipping insertion in model container [2021-10-16 03:19:15,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:19:15" (1/1) ... [2021-10-16 03:19:15,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:19:16,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:19:16,591 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_ea47a3be-d902-411b-85c2-40b5eb37edf2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i[33021,33034] [2021-10-16 03:19:16,817 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_ea47a3be-d902-411b-85c2-40b5eb37edf2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i[45234,45247] [2021-10-16 03:19:16,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:19:16,852 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:19:16,914 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_ea47a3be-d902-411b-85c2-40b5eb37edf2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i[33021,33034] [2021-10-16 03:19:16,995 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_ea47a3be-d902-411b-85c2-40b5eb37edf2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-1.i[45234,45247] [2021-10-16 03:19:16,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:19:17,057 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:19:17,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17 WrapperNode [2021-10-16 03:19:17,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:19:17,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:19:17,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:19:17,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:19:17,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:19:17,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:19:17,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:19:17,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:19:17,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:19:17,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:19:17,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:19:17,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:19:17,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (1/1) ... [2021-10-16 03:19:17,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:19:17,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:17,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:19:17,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:19:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:19:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:19:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:19:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:19:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:19:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-16 03:19:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:19:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:19:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:19:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:19:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:19:22,850 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:19:22,850 INFO L299 CfgBuilder]: Removed 136 assume(true) statements. [2021-10-16 03:19:22,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:19:22 BoogieIcfgContainer [2021-10-16 03:19:22,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:19:22,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:19:22,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:19:22,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:19:22,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:19:15" (1/3) ... [2021-10-16 03:19:22,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec3afbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:19:22, skipping insertion in model container [2021-10-16 03:19:22,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:17" (2/3) ... [2021-10-16 03:19:22,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec3afbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:19:22, skipping insertion in model container [2021-10-16 03:19:22,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:19:22" (3/3) ... [2021-10-16 03:19:22,869 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-1.i [2021-10-16 03:19:22,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:19:22,881 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-16 03:19:23,002 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:19:23,008 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 [2021-10-16 03:19:23,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-16 03:19:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 106 states have (on average 1.8584905660377358) internal successors, (197), 116 states have internal predecessors, (197), 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) [2021-10-16 03:19:23,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 03:19:23,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:23,090 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 03:19:23,091 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)] === [2021-10-16 03:19:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:23,100 INFO L82 PathProgramCache]: Analyzing trace with hash 34750864, now seen corresponding path program 1 times [2021-10-16 03:19:23,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:19:23,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453451226] [2021-10-16 03:19:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:23,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:19:23,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:19:23,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958705946] [2021-10-16 03:19:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:23,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:23,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:23,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:19:23,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:19:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:23,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:19:23,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:19:23,752 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-16 03:19:23,753 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 [2021-10-16 03:19:23,924 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 [2021-10-16 03:19:24,223 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 [2021-10-16 03:19:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:24,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:24,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:19:24,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453451226] [2021-10-16 03:19:24,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:19:24,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958705946] [2021-10-16 03:19:24,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958705946] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:19:24,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:19:24,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 03:19:24,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053655492] [2021-10-16 03:19:24,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:19:24,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:19:24,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:19:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:19:24,408 INFO L87 Difference]: Start difference. First operand has 117 states, 106 states have (on average 1.8584905660377358) internal successors, (197), 116 states have internal predecessors, (197), 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) [2021-10-16 03:19:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:19:39,932 INFO L93 Difference]: Finished difference Result 324 states and 566 transitions. [2021-10-16 03:19:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:19:39,934 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 [2021-10-16 03:19:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:19:39,949 INFO L225 Difference]: With dead ends: 324 [2021-10-16 03:19:39,949 INFO L226 Difference]: Without dead ends: 204 [2021-10-16 03:19:39,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 83.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:19:40,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-16 03:19:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 119. [2021-10-16 03:19:40,065 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) [2021-10-16 03:19:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2021-10-16 03:19:40,074 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 4 [2021-10-16 03:19:40,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:19:40,075 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2021-10-16 03:19:40,075 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) [2021-10-16 03:19:40,075 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2021-10-16 03:19:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 03:19:40,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:40,079 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] [2021-10-16 03:19:40,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:19:40,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-16 03:19:40,304 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)] === [2021-10-16 03:19:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:40,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1228297263, now seen corresponding path program 1 times [2021-10-16 03:19:40,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:19:40,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598348074] [2021-10-16 03:19:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:40,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:19:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:40,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:19:40,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598348074] [2021-10-16 03:19:40,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598348074] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:19:40,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:19:40,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:19:40,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082720358] [2021-10-16 03:19:40,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:19:40,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:19:40,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:19:40,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:19:40,398 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) [2021-10-16 03:19:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:19:41,029 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2021-10-16 03:19:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:19:41,030 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 [2021-10-16 03:19:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:19:41,032 INFO L225 Difference]: With dead ends: 221 [2021-10-16 03:19:41,032 INFO L226 Difference]: Without dead ends: 165 [2021-10-16 03:19:41,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:19:41,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-16 03:19:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2021-10-16 03:19:41,043 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) [2021-10-16 03:19:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2021-10-16 03:19:41,044 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 24 [2021-10-16 03:19:41,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:19:41,045 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2021-10-16 03:19:41,045 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) [2021-10-16 03:19:41,046 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2021-10-16 03:19:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:19:41,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:41,047 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] [2021-10-16 03:19:41,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:19:41,048 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)] === [2021-10-16 03:19:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:41,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1602941750, now seen corresponding path program 1 times [2021-10-16 03:19:41,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:19:41,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843206196] [2021-10-16 03:19:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:41,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:19:41,073 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:19:41,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554441839] [2021-10-16 03:19:41,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:41,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:41,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:19:41,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 03:19:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:41,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:19:41,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:19:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:41,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:41,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:19:41,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843206196] [2021-10-16 03:19:41,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:19:41,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554441839] [2021-10-16 03:19:41,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554441839] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:19:41,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:19:41,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 03:19:41,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835604647] [2021-10-16 03:19:41,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:19:41,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:19:41,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:19:41,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:19:41,600 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) [2021-10-16 03:19:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:19:41,705 INFO L93 Difference]: Finished difference Result 275 states and 320 transitions. [2021-10-16 03:19:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:19:41,706 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 [2021-10-16 03:19:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:19:41,709 INFO L225 Difference]: With dead ends: 275 [2021-10-16 03:19:41,709 INFO L226 Difference]: Without dead ends: 273 [2021-10-16 03:19:41,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:19:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-16 03:19:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 264. [2021-10-16 03:19:41,751 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) [2021-10-16 03:19:41,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 313 transitions. [2021-10-16 03:19:41,753 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 313 transitions. Word has length 28 [2021-10-16 03:19:41,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:19:41,755 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 313 transitions. [2021-10-16 03:19:41,755 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) [2021-10-16 03:19:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 313 transitions. [2021-10-16 03:19:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 03:19:41,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:41,759 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] [2021-10-16 03:19:41,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:19:41,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:41,974 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)] === [2021-10-16 03:19:41,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:41,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1848412876, now seen corresponding path program 1 times [2021-10-16 03:19:41,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:19:41,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091789853] [2021-10-16 03:19:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:41,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:19:42,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:19:42,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043811075] [2021-10-16 03:19:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:42,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:42,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:42,043 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:19:42,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 03:19:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:42,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:19:42,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:19:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:42,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:42,577 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:19:42,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091789853] [2021-10-16 03:19:42,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:19:42,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043811075] [2021-10-16 03:19:42,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043811075] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:19:42,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:19:42,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 03:19:42,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268964803] [2021-10-16 03:19:42,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:19:42,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:19:42,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:19:42,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:19:42,580 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) [2021-10-16 03:19:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:19:42,633 INFO L93 Difference]: Finished difference Result 264 states and 313 transitions. [2021-10-16 03:19:42,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:19:42,634 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 [2021-10-16 03:19:42,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:19:42,636 INFO L225 Difference]: With dead ends: 264 [2021-10-16 03:19:42,636 INFO L226 Difference]: Without dead ends: 262 [2021-10-16 03:19:42,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:19:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-16 03:19:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-10-16 03:19:42,654 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) [2021-10-16 03:19:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 310 transitions. [2021-10-16 03:19:42,656 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 310 transitions. Word has length 29 [2021-10-16 03:19:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:19:42,657 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 310 transitions. [2021-10-16 03:19:42,657 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) [2021-10-16 03:19:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 310 transitions. [2021-10-16 03:19:42,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 03:19:42,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:42,659 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] [2021-10-16 03:19:42,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:19:42,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:42,882 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)] === [2021-10-16 03:19:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:42,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1466193422, now seen corresponding path program 1 times [2021-10-16 03:19:42,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:19:42,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466658471] [2021-10-16 03:19:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:42,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:19:42,907 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:19:42,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210752315] [2021-10-16 03:19:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:42,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:42,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:42,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:19:42,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 03:19:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:43,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:19:43,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:19:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:43,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:43,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:19:43,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466658471] [2021-10-16 03:19:43,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:19:43,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210752315] [2021-10-16 03:19:43,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210752315] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:19:43,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:19:43,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:19:43,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904656196] [2021-10-16 03:19:43,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:19:43,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:19:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:19:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:19:43,577 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) [2021-10-16 03:19:43,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:19:43,956 INFO L93 Difference]: Finished difference Result 551 states and 649 transitions. [2021-10-16 03:19:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:19:43,956 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 [2021-10-16 03:19:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:19:43,958 INFO L225 Difference]: With dead ends: 551 [2021-10-16 03:19:43,958 INFO L226 Difference]: Without dead ends: 314 [2021-10-16 03:19:43,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:19:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-16 03:19:43,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2021-10-16 03:19:43,974 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) [2021-10-16 03:19:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 364 transitions. [2021-10-16 03:19:43,976 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 364 transitions. Word has length 30 [2021-10-16 03:19:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:19:43,976 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 364 transitions. [2021-10-16 03:19:43,977 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) [2021-10-16 03:19:43,977 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 364 transitions. [2021-10-16 03:19:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 03:19:43,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:43,978 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] [2021-10-16 03:19:44,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:19:44,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:44,200 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)] === [2021-10-16 03:19:44,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:44,200 INFO L82 PathProgramCache]: Analyzing trace with hash 148171654, now seen corresponding path program 1 times [2021-10-16 03:19:44,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:19:44,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300948442] [2021-10-16 03:19:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:44,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:19:44,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:19:44,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946076456] [2021-10-16 03:19:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:44,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:44,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:19:44,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 03:19:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:44,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:19:44,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:19:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:44,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:44,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:19:44,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300948442] [2021-10-16 03:19:44,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:19:44,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946076456] [2021-10-16 03:19:44,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946076456] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:19:44,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:19:44,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:19:44,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746612767] [2021-10-16 03:19:44,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:19:44,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:19:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:19:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:19:44,778 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) [2021-10-16 03:19:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:19:44,895 INFO L93 Difference]: Finished difference Result 609 states and 729 transitions. [2021-10-16 03:19:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:19:44,896 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 [2021-10-16 03:19:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:19:44,898 INFO L225 Difference]: With dead ends: 609 [2021-10-16 03:19:44,898 INFO L226 Difference]: Without dead ends: 321 [2021-10-16 03:19:44,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:19:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-10-16 03:19:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-10-16 03:19:44,934 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) [2021-10-16 03:19:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 376 transitions. [2021-10-16 03:19:44,935 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 376 transitions. Word has length 35 [2021-10-16 03:19:44,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:19:44,936 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 376 transitions. [2021-10-16 03:19:44,936 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) [2021-10-16 03:19:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 376 transitions. [2021-10-16 03:19:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 03:19:44,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:44,938 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] [2021-10-16 03:19:44,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:19:45,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-16 03:19:45,158 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)] === [2021-10-16 03:19:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:45,158 INFO L82 PathProgramCache]: Analyzing trace with hash 982755110, now seen corresponding path program 1 times [2021-10-16 03:19:45,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:19:45,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570702913] [2021-10-16 03:19:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:45,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:19:45,174 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:19:45,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713228857] [2021-10-16 03:19:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:45,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:45,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:45,176 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:19:45,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 03:19:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:45,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:19:45,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:19:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:19:45,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:19:45,772 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:19:45,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570702913] [2021-10-16 03:19:45,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:19:45,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713228857] [2021-10-16 03:19:45,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713228857] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:19:45,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [209241721] [2021-10-16 03:19:45,795 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-10-16 03:19:45,796 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:19:45,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:19:45,805 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:19:45,806 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:19:45,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,862 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:19:45,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-16 03:19:45,864 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:19:45,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-16 03:19:45,866 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:19:45,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-16 03:19:45,869 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:19:45,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 03:19:45,870 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:19:45,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 03:19:45,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-16 03:19:45,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:19:45,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:19:45,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:19:45,955 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 03:19:45,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-16 03:19:45,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 03:19:45,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 03:19:45,964 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:19:45,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:19:45,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:19:45,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-10-16 03:19:45,995 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:19:45,995 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:166, output treesize:150 [2021-10-16 03:19:46,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:19:46,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-16 03:19:46,222 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) [2021-10-16 03:19:46,226 INFO L168 Benchmark]: Toolchain (without parser) took 30265.22 ms. Allocated memory was 86.0 MB in the beginning and 222.3 MB in the end (delta: 136.3 MB). Free memory was 46.1 MB in the beginning and 110.9 MB in the end (delta: -64.8 MB). Peak memory consumption was 72.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:46,226 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory is still 65.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:19:46,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1092.35 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 46.0 MB in the beginning and 66.9 MB in the end (delta: -21.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:46,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 164.30 ms. Allocated memory is still 109.1 MB. Free memory was 66.9 MB in the beginning and 59.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:46,228 INFO L168 Benchmark]: Boogie Preprocessor took 169.58 ms. Allocated memory is still 109.1 MB. Free memory was 59.7 MB in the beginning and 51.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:46,228 INFO L168 Benchmark]: RCFGBuilder took 5460.07 ms. Allocated memory was 109.1 MB in the beginning and 157.3 MB in the end (delta: 48.2 MB). Free memory was 51.7 MB in the beginning and 100.7 MB in the end (delta: -49.0 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:46,229 INFO L168 Benchmark]: TraceAbstraction took 23368.16 ms. Allocated memory was 157.3 MB in the beginning and 222.3 MB in the end (delta: 65.0 MB). Free memory was 100.7 MB in the beginning and 110.9 MB in the end (delta: -10.2 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:19:46,231 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 86.0 MB. Free memory is still 65.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1092.35 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 46.0 MB in the beginning and 66.9 MB in the end (delta: -21.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 164.30 ms. Allocated memory is still 109.1 MB. Free memory was 66.9 MB in the beginning and 59.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 169.58 ms. Allocated memory is still 109.1 MB. Free memory was 59.7 MB in the beginning and 51.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5460.07 ms. Allocated memory was 109.1 MB in the beginning and 157.3 MB in the end (delta: 48.2 MB). Free memory was 51.7 MB in the beginning and 100.7 MB in the end (delta: -49.0 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23368.16 ms. Allocated memory was 157.3 MB in the beginning and 222.3 MB in the end (delta: 65.0 MB). Free memory was 100.7 MB in the beginning and 110.9 MB in the end (delta: -10.2 MB). Peak memory consumption was 54.8 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. [2021-10-16 03:19:46,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea47a3be-d902-411b-85c2-40b5eb37edf2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...