./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.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_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/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_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/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_9e2634f9-fcaa-4090-932c-f5d65e5fa170/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 0cd78dc1e18646cb27a6604833c287cb418dce47 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/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 02:49:35,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:49:35,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:49:35,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:49:35,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:49:35,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:49:35,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:49:35,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:49:35,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:49:35,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:49:35,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:49:35,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:49:35,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:49:35,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:49:35,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:49:35,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:49:35,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:49:35,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:49:35,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:49:35,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:49:35,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:49:35,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:49:35,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:49:35,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:49:35,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:49:35,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:49:35,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:49:35,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:49:35,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:49:35,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:49:35,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:49:35,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:49:35,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:49:35,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:49:35,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:49:35,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:49:35,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:49:35,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:49:35,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:49:35,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:49:35,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:49:35,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-16 02:49:35,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:49:35,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:49:35,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:49:35,926 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:49:35,926 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:49:35,926 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:49:35,927 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:49:35,927 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:49:35,927 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:49:35,928 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:49:35,928 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:49:35,928 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:49:35,929 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:49:35,929 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:49:35,929 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:49:35,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:49:35,930 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:49:35,931 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:49:35,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:49:35,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:49:35,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:49:35,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:49:35,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:49:35,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:49:35,933 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-16 02:49:35,933 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:49:35,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:49:35,934 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:49:35,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:49:35,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:49:35,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:49:35,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:35,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:49:35,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:49:35,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:49:35,936 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:49:35,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:49:35,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:49:35,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:49:35,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:49:35,937 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_9e2634f9-fcaa-4090-932c-f5d65e5fa170/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cd78dc1e18646cb27a6604833c287cb418dce47 [2021-10-16 02:49:36,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:49:36,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:49:36,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:49:36,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:49:36,356 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:49:36,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2021-10-16 02:49:36,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/data/a3fe6eb60/eeb73c9cc0d146f7b635d23bee733a9d/FLAG263a29e07 [2021-10-16 02:49:37,302 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:49:37,303 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2021-10-16 02:49:37,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/data/a3fe6eb60/eeb73c9cc0d146f7b635d23bee733a9d/FLAG263a29e07 [2021-10-16 02:49:37,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/data/a3fe6eb60/eeb73c9cc0d146f7b635d23bee733a9d [2021-10-16 02:49:37,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:49:37,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:49:37,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:37,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:49:37,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:49:37,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:37" (1/1) ... [2021-10-16 02:49:37,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b584d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:37, skipping insertion in model container [2021-10-16 02:49:37,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:37" (1/1) ... [2021-10-16 02:49:37,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:49:37,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:49:38,136 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_9e2634f9-fcaa-4090-932c-f5d65e5fa170/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2021-10-16 02:49:38,301 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_9e2634f9-fcaa-4090-932c-f5d65e5fa170/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2021-10-16 02:49:38,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:38,343 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:49:38,393 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_9e2634f9-fcaa-4090-932c-f5d65e5fa170/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2021-10-16 02:49:38,523 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_9e2634f9-fcaa-4090-932c-f5d65e5fa170/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2021-10-16 02:49:38,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:38,584 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:49:38,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38 WrapperNode [2021-10-16 02:49:38,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:38,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:38,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:49:38,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:49:38,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:38,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:49:38,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:49:38,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:49:38,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:49:38,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:49:38,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:49:38,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:49:38,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:38,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:49:38,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:49:39,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:49:39,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:49:39,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:49:39,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:49:39,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:49:39,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:49:39,052 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-16 02:49:39,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:49:39,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:49:39,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:49:39,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:49:39,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:49:45,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:49:45,982 INFO L299 CfgBuilder]: Removed 145 assume(true) statements. [2021-10-16 02:49:45,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:45 BoogieIcfgContainer [2021-10-16 02:49:45,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:49:45,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:49:45,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:49:45,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:49:45,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:49:37" (1/3) ... [2021-10-16 02:49:45,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1793f250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:45, skipping insertion in model container [2021-10-16 02:49:45,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (2/3) ... [2021-10-16 02:49:45,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1793f250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:45, skipping insertion in model container [2021-10-16 02:49:45,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:45" (3/3) ... [2021-10-16 02:49:46,003 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-2.i [2021-10-16 02:49:46,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:49:46,011 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-16 02:49:46,088 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:49:46,099 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 02:49:46,099 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-16 02:49:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 120 states have (on average 1.85) internal successors, (222), 130 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:49:46,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:46,147 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:49:46,148 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 02:49:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:46,156 INFO L82 PathProgramCache]: Analyzing trace with hash 38508653, now seen corresponding path program 1 times [2021-10-16 02:49:46,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:49:46,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415637634] [2021-10-16 02:49:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:46,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:49:46,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:49:46,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367361174] [2021-10-16 02:49:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:46,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:49:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:49:46,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:49:46,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:49:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:46,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:49:46,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:49:46,791 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 02:49:46,869 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-16 02:49:46,870 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 02:49:47,514 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 02:49:47,537 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 02:49:47,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:49:47,706 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 02:49:47,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:49:47,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415637634] [2021-10-16 02:49:47,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:49:47,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367361174] [2021-10-16 02:49:47,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367361174] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:49:47,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:49:47,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 02:49:47,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807758130] [2021-10-16 02:49:47,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:49:47,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:49:47,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:49:47,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:49:47,736 INFO L87 Difference]: Start difference. First operand has 131 states, 120 states have (on average 1.85) internal successors, (222), 130 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:57,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:49:57,830 INFO L93 Difference]: Finished difference Result 360 states and 631 transitions. [2021-10-16 02:49:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:49:57,832 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 02:49:57,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:49:57,845 INFO L225 Difference]: With dead ends: 360 [2021-10-16 02:49:57,845 INFO L226 Difference]: Without dead ends: 204 [2021-10-16 02:49:57,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:49:57,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-16 02:49:57,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 119. [2021-10-16 02:49:57,901 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 02:49:57,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2021-10-16 02:49:57,904 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 4 [2021-10-16 02:49:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:49:57,904 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2021-10-16 02:49:57,905 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 02:49:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2021-10-16 02:49:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:49:57,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:57,907 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 02:49:57,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:49:58,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-16 02:49:58,126 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 02:49:58,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:58,127 INFO L82 PathProgramCache]: Analyzing trace with hash 597283780, now seen corresponding path program 1 times [2021-10-16 02:49:58,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:49:58,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091875043] [2021-10-16 02:49:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:58,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:49:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:58,301 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 02:49:58,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:49:58,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091875043] [2021-10-16 02:49:58,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091875043] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:49:58,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:49:58,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:49:58,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758353496] [2021-10-16 02:49:58,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:49:58,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:49:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:49:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:49:58,324 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 02:49:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:49:59,194 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2021-10-16 02:49:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:49:59,195 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 02:49:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:49:59,197 INFO L225 Difference]: With dead ends: 221 [2021-10-16 02:49:59,197 INFO L226 Difference]: Without dead ends: 165 [2021-10-16 02:49:59,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:49:59,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-16 02:49:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2021-10-16 02:49:59,212 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 02:49:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2021-10-16 02:49:59,213 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 24 [2021-10-16 02:49:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:49:59,214 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2021-10-16 02:49:59,214 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 02:49:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2021-10-16 02:49:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:49:59,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:59,216 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 02:49:59,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:49:59,217 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 02:49:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1777953293, now seen corresponding path program 1 times [2021-10-16 02:49:59,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:49:59,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127110185] [2021-10-16 02:49:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:59,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:49:59,246 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:49:59,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812020429] [2021-10-16 02:49:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:59,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:49:59,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:49:59,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:49:59,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:49:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:59,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:49:59,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:49:59,790 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 02:49:59,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:49:59,927 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 02:49:59,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:49:59,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127110185] [2021-10-16 02:49:59,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:49:59,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812020429] [2021-10-16 02:49:59,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812020429] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:49:59,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:49:59,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 02:49:59,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354647334] [2021-10-16 02:49:59,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:49:59,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:49:59,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:49:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:49:59,937 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 02:50:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:00,051 INFO L93 Difference]: Finished difference Result 275 states and 320 transitions. [2021-10-16 02:50:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:50:00,052 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 02:50:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:00,055 INFO L225 Difference]: With dead ends: 275 [2021-10-16 02:50:00,055 INFO L226 Difference]: Without dead ends: 273 [2021-10-16 02:50:00,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:50:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-16 02:50:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 264. [2021-10-16 02:50:00,080 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 02:50:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 313 transitions. [2021-10-16 02:50:00,086 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 313 transitions. Word has length 28 [2021-10-16 02:50:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:00,087 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 313 transitions. [2021-10-16 02:50:00,087 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 02:50:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 313 transitions. [2021-10-16 02:50:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 02:50:00,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:00,091 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 02:50:00,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:00,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:50:00,292 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 02:50:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:00,293 INFO L82 PathProgramCache]: Analyzing trace with hash 718023191, now seen corresponding path program 1 times [2021-10-16 02:50:00,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:50:00,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565191636] [2021-10-16 02:50:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:00,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:50:00,333 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:50:00,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720804600] [2021-10-16 02:50:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:00,334 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:50:00,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:50:00,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:50:00,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:50:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:00,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:50:00,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:00,764 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 02:50:00,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:00,903 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 02:50:00,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:50:00,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565191636] [2021-10-16 02:50:00,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:50:00,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720804600] [2021-10-16 02:50:00,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720804600] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:00,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:00,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 02:50:00,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622355215] [2021-10-16 02:50:00,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:50:00,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:50:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:50:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:50:00,907 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 02:50:00,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:00,962 INFO L93 Difference]: Finished difference Result 264 states and 313 transitions. [2021-10-16 02:50:00,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:50:00,964 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 02:50:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:00,966 INFO L225 Difference]: With dead ends: 264 [2021-10-16 02:50:00,967 INFO L226 Difference]: Without dead ends: 262 [2021-10-16 02:50:00,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:50:00,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-16 02:50:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-10-16 02:50:01,000 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 02:50:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 310 transitions. [2021-10-16 02:50:01,002 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 310 transitions. Word has length 29 [2021-10-16 02:50:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:01,003 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 310 transitions. [2021-10-16 02:50:01,003 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 02:50:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 310 transitions. [2021-10-16 02:50:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:50:01,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:01,005 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 02:50:01,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:01,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:50:01,233 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 02:50:01,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:01,233 INFO L82 PathProgramCache]: Analyzing trace with hash 783917853, now seen corresponding path program 1 times [2021-10-16 02:50:01,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:50:01,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212339685] [2021-10-16 02:50:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:01,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:50:01,272 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:50:01,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824208106] [2021-10-16 02:50:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:01,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:50:01,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:50:01,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:50:01,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 02:50:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:01,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:50:01,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:01,824 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 02:50:01,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:02,044 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 02:50:02,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:50:02,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212339685] [2021-10-16 02:50:02,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:50:02,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824208106] [2021-10-16 02:50:02,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824208106] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:02,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:02,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:50:02,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730746306] [2021-10-16 02:50:02,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:50:02,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:50:02,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:50:02,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:50:02,049 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 02:50:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:02,328 INFO L93 Difference]: Finished difference Result 551 states and 649 transitions. [2021-10-16 02:50:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:50:02,329 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 02:50:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:02,332 INFO L225 Difference]: With dead ends: 551 [2021-10-16 02:50:02,332 INFO L226 Difference]: Without dead ends: 314 [2021-10-16 02:50:02,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:50:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-16 02:50:02,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2021-10-16 02:50:02,353 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 02:50:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 364 transitions. [2021-10-16 02:50:02,355 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 364 transitions. Word has length 30 [2021-10-16 02:50:02,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:02,356 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 364 transitions. [2021-10-16 02:50:02,356 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 02:50:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 364 transitions. [2021-10-16 02:50:02,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 02:50:02,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:02,358 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 02:50:02,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:02,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:50:02,578 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 02:50:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:02,578 INFO L82 PathProgramCache]: Analyzing trace with hash -312215074, now seen corresponding path program 1 times [2021-10-16 02:50:02,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:50:02,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731973859] [2021-10-16 02:50:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:02,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:50:02,604 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:50:02,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255186142] [2021-10-16 02:50:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:02,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:50:02,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:50:02,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:50:02,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:50:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:03,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:50:03,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:03,198 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 02:50:03,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:03,330 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 02:50:03,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:50:03,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731973859] [2021-10-16 02:50:03,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:50:03,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255186142] [2021-10-16 02:50:03,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255186142] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:03,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:03,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:50:03,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816867970] [2021-10-16 02:50:03,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:50:03,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:50:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:50:03,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:50:03,335 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 02:50:03,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:03,532 INFO L93 Difference]: Finished difference Result 609 states and 729 transitions. [2021-10-16 02:50:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:50:03,534 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 02:50:03,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:03,537 INFO L225 Difference]: With dead ends: 609 [2021-10-16 02:50:03,537 INFO L226 Difference]: Without dead ends: 321 [2021-10-16 02:50:03,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:50:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-10-16 02:50:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-10-16 02:50:03,552 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 02:50:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 376 transitions. [2021-10-16 02:50:03,554 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 376 transitions. Word has length 35 [2021-10-16 02:50:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:03,555 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 376 transitions. [2021-10-16 02:50:03,555 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 02:50:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 376 transitions. [2021-10-16 02:50:03,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 02:50:03,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:03,557 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 02:50:03,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:03,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-16 02:50:03,778 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 02:50:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash -399788226, now seen corresponding path program 1 times [2021-10-16 02:50:03,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:50:03,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573897034] [2021-10-16 02:50:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:03,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:50:03,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:50:03,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736887443] [2021-10-16 02:50:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:03,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:50:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:50:03,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:50:03,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:50:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:04,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:50:04,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:04,379 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 02:50:04,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:50:04,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:50:04,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573897034] [2021-10-16 02:50:04,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:50:04,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736887443] [2021-10-16 02:50:04,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736887443] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:50:04,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1436434018] [2021-10-16 02:50:04,566 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-10-16 02:50:04,566 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:50:04,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:50:04,581 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:50:04,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:50:04,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,679 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:50:04,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-16 02:50:04,681 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:50:04,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-16 02:50:04,685 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:50:04,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:50:04,688 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:50:04,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:50:04,690 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:50:04,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-16 02:50:04,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-16 02:50:04,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:50:04,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:50:04,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-10-16 02:50:04,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-16 02:50:04,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-16 02:50:04,738 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:50:04,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:50:04,793 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:50:04,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-16 02:50:04,797 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:50:04,797 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:166, output treesize:162 [2021-10-16 02:50:04,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:05,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:50:05,018 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 02:50:05,024 INFO L168 Benchmark]: Toolchain (without parser) took 27548.49 ms. Allocated memory was 104.9 MB in the beginning and 222.3 MB in the end (delta: 117.4 MB). Free memory was 66.0 MB in the beginning and 138.3 MB in the end (delta: -72.2 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:05,024 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:50:05,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1108.82 ms. Allocated memory is still 104.9 MB. Free memory was 65.8 MB in the beginning and 55.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:05,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 161.10 ms. Allocated memory is still 104.9 MB. Free memory was 55.9 MB in the beginning and 47.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:05,026 INFO L168 Benchmark]: Boogie Preprocessor took 189.42 ms. Allocated memory is still 104.9 MB. Free memory was 47.6 MB in the beginning and 74.6 MB in the end (delta: -27.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:05,027 INFO L168 Benchmark]: RCFGBuilder took 7048.41 ms. Allocated memory was 104.9 MB in the beginning and 172.0 MB in the end (delta: 67.1 MB). Free memory was 74.6 MB in the beginning and 121.2 MB in the end (delta: -46.6 MB). Peak memory consumption was 79.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:05,028 INFO L168 Benchmark]: TraceAbstraction took 19032.28 ms. Allocated memory was 172.0 MB in the beginning and 222.3 MB in the end (delta: 50.3 MB). Free memory was 121.2 MB in the beginning and 138.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:05,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 104.9 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1108.82 ms. Allocated memory is still 104.9 MB. Free memory was 65.8 MB in the beginning and 55.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 161.10 ms. Allocated memory is still 104.9 MB. Free memory was 55.9 MB in the beginning and 47.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 189.42 ms. Allocated memory is still 104.9 MB. Free memory was 47.6 MB in the beginning and 74.6 MB in the end (delta: -27.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7048.41 ms. Allocated memory was 104.9 MB in the beginning and 172.0 MB in the end (delta: 67.1 MB). Free memory was 74.6 MB in the beginning and 121.2 MB in the end (delta: -46.6 MB). Peak memory consumption was 79.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19032.28 ms. Allocated memory was 172.0 MB in the beginning and 222.3 MB in the end (delta: 50.3 MB). Free memory was 121.2 MB in the beginning and 138.3 MB in the end (delta: -17.1 MB). Peak memory consumption was 33.1 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 02:50:05,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2634f9-fcaa-4090-932c-f5d65e5fa170/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...