./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_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_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/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_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/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_01a15e0a-4b7d-48b2-80bf-20d794cd6662/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 74ea72f9cea3924e848db41b32c4e43effe0afda ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_35| --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:19:44,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:19:44,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:19:44,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:19:44,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:19:44,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:19:44,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:19:44,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:19:44,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:19:44,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:19:44,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:19:44,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:19:44,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:19:44,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:19:44,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:19:44,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:19:44,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:19:44,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:19:44,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:19:44,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:19:44,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:19:44,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:19:44,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:19:44,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:19:44,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:19:44,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:19:44,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:19:44,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:19:44,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:19:44,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:19:44,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:19:44,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:19:44,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:19:44,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:19:44,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:19:44,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:19:44,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:19:44,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:19:44,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:19:44,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:19:44,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:19:44,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-16 03:19:44,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:19:44,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:19:44,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:19:44,246 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:19:44,246 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:19:44,247 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:19:44,247 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:19:44,248 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:19:44,248 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:19:44,248 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:19:44,249 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:19:44,249 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:19:44,250 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:19:44,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:19:44,250 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:19:44,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:19:44,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:19:44,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 03:19:44,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:19:44,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:19:44,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:19:44,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:19:44,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:19:44,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:19:44,255 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-16 03:19:44,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:19:44,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:19:44,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:19:44,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:19:44,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:19:44,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:19:44,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:19:44,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:19:44,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:19:44,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:19:44,257 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:19:44,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:19:44,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:19:44,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:19:44,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:19:44,259 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_01a15e0a-4b7d-48b2-80bf-20d794cd6662/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74ea72f9cea3924e848db41b32c4e43effe0afda [2021-10-16 03:19:44,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:19:44,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:19:44,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:19:44,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:19:44,552 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:19:44,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2021-10-16 03:19:44,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/data/3d3110d5c/197e7f39a8b349c99696e580c9f53dcf/FLAG280921693 [2021-10-16 03:19:45,236 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:19:45,237 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2021-10-16 03:19:45,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/data/3d3110d5c/197e7f39a8b349c99696e580c9f53dcf/FLAG280921693 [2021-10-16 03:19:45,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/data/3d3110d5c/197e7f39a8b349c99696e580c9f53dcf [2021-10-16 03:19:45,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:19:45,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:19:45,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:19:45,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:19:45,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:19:45,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:19:45" (1/1) ... [2021-10-16 03:19:45,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33627c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:45, skipping insertion in model container [2021-10-16 03:19:45,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:19:45" (1/1) ... [2021-10-16 03:19:45,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:19:45,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:19:46,164 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_01a15e0a-4b7d-48b2-80bf-20d794cd6662/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i[33021,33034] [2021-10-16 03:19:46,353 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_01a15e0a-4b7d-48b2-80bf-20d794cd6662/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i[45234,45247] [2021-10-16 03:19:46,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:19:46,395 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:19:46,438 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_01a15e0a-4b7d-48b2-80bf-20d794cd6662/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i[33021,33034] [2021-10-16 03:19:46,492 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_01a15e0a-4b7d-48b2-80bf-20d794cd6662/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i[45234,45247] [2021-10-16 03:19:46,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:19:46,548 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:19:46,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46 WrapperNode [2021-10-16 03:19:46,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:19:46,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:19:46,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:19:46,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:19:46,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:19:46,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:19:46,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:19:46,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:19:46,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:19:46,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:19:46,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:19:46,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:19:46,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (1/1) ... [2021-10-16 03:19:46,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:19:46,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:46,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:19:46,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:19:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:19:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:19:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:19:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:19:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:19:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-16 03:19:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:19:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:19:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:19:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:19:46,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:19:52,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:19:52,501 INFO L299 CfgBuilder]: Removed 145 assume(true) statements. [2021-10-16 03:19:52,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:19:52 BoogieIcfgContainer [2021-10-16 03:19:52,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:19:52,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:19:52,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:19:52,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:19:52,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:19:45" (1/3) ... [2021-10-16 03:19:52,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3470829b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:19:52, skipping insertion in model container [2021-10-16 03:19:52,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:19:46" (2/3) ... [2021-10-16 03:19:52,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3470829b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:19:52, skipping insertion in model container [2021-10-16 03:19:52,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:19:52" (3/3) ... [2021-10-16 03:19:52,519 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-2.i [2021-10-16 03:19:52,525 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:19:52,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-16 03:19:52,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:19:52,607 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:19:52,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-16 03:19:52,630 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 03:19:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 03:19:52,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:19:52,636 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 03:19:52,637 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-16 03:19:52,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:19:52,643 INFO L82 PathProgramCache]: Analyzing trace with hash 38508653, now seen corresponding path program 1 times [2021-10-16 03:19:52,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:19:52,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868588501] [2021-10-16 03:19:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:52,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:19:52,791 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:19:52,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489158149] [2021-10-16 03:19:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:19:52,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:19:52,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:19:52,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:19:52,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:19:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:19:53,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:19:53,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:19:53,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:19:53,410 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-16 03:19:53,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 31 [2021-10-16 03:19:53,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-10-16 03:19:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:54,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:19:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:19:54,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:19:54,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868588501] [2021-10-16 03:19:54,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:19:54,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489158149] [2021-10-16 03:19:54,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489158149] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:19:54,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:19:54,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 03:19:54,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156317868] [2021-10-16 03:19:54,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:19:54,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:19:54,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:19:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:19:54,226 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 03:20:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:10,965 INFO L93 Difference]: Finished difference Result 360 states and 631 transitions. [2021-10-16 03:20:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:20:10,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 03:20:10,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:10,976 INFO L225 Difference]: With dead ends: 360 [2021-10-16 03:20:10,976 INFO L226 Difference]: Without dead ends: 204 [2021-10-16 03:20:10,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:20:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-16 03:20:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 119. [2021-10-16 03:20:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 109 states have (on average 1.2660550458715596) internal successors, (138), 118 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2021-10-16 03:20:11,023 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 4 [2021-10-16 03:20:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:11,024 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2021-10-16 03:20:11,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:11,024 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2021-10-16 03:20:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 03:20:11,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:11,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:11,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-16 03:20:11,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-16 03:20:11,241 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-16 03:20:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:11,241 INFO L82 PathProgramCache]: Analyzing trace with hash 597283780, now seen corresponding path program 1 times [2021-10-16 03:20:11,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:20:11,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305430826] [2021-10-16 03:20:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:11,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:20:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:11,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:20:11,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305430826] [2021-10-16 03:20:11,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305430826] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:11,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:11,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:20:11,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774925961] [2021-10-16 03:20:11,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:20:11,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:20:11,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:20:11,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:20:11,383 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:12,348 INFO L93 Difference]: Finished difference Result 221 states and 257 transitions. [2021-10-16 03:20:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:20:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-16 03:20:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:12,351 INFO L225 Difference]: With dead ends: 221 [2021-10-16 03:20:12,352 INFO L226 Difference]: Without dead ends: 165 [2021-10-16 03:20:12,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:20:12,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-16 03:20:12,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2021-10-16 03:20:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 109 states have (on average 1.2568807339449541) internal successors, (137), 118 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2021-10-16 03:20:12,364 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 24 [2021-10-16 03:20:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:12,365 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2021-10-16 03:20:12,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2021-10-16 03:20:12,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 03:20:12,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:12,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:12,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:20:12,367 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-16 03:20:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1777953293, now seen corresponding path program 1 times [2021-10-16 03:20:12,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:20:12,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084306578] [2021-10-16 03:20:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:12,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:20:12,389 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:20:12,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001270702] [2021-10-16 03:20:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:12,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:12,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:12,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:20:12,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 03:20:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:12,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:20:12,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:12,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:12,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:20:12,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084306578] [2021-10-16 03:20:12,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:20:12,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001270702] [2021-10-16 03:20:12,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001270702] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:12,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:12,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 03:20:12,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984016138] [2021-10-16 03:20:12,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:20:12,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:20:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:20:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:20:12,906 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:12,999 INFO L93 Difference]: Finished difference Result 275 states and 320 transitions. [2021-10-16 03:20:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:20:12,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 03:20:13,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:13,002 INFO L225 Difference]: With dead ends: 275 [2021-10-16 03:20:13,002 INFO L226 Difference]: Without dead ends: 273 [2021-10-16 03:20:13,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:20:13,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-16 03:20:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 264. [2021-10-16 03:20:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 254 states have (on average 1.2322834645669292) internal successors, (313), 263 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 313 transitions. [2021-10-16 03:20:13,024 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 313 transitions. Word has length 28 [2021-10-16 03:20:13,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:13,025 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 313 transitions. [2021-10-16 03:20:13,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 313 transitions. [2021-10-16 03:20:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-16 03:20:13,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:13,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:13,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:13,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:13,253 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-16 03:20:13,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:13,253 INFO L82 PathProgramCache]: Analyzing trace with hash 718023191, now seen corresponding path program 1 times [2021-10-16 03:20:13,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:20:13,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504118996] [2021-10-16 03:20:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:13,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:20:13,287 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:20:13,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202567283] [2021-10-16 03:20:13,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:13,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:13,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:13,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:20:13,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 03:20:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:13,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:20:13,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:13,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:13,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:20:13,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504118996] [2021-10-16 03:20:13,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:20:13,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202567283] [2021-10-16 03:20:13,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202567283] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:13,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:13,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-16 03:20:13,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835396921] [2021-10-16 03:20:13,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:20:13,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:20:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:20:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:20:13,859 INFO L87 Difference]: Start difference. First operand 264 states and 313 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:13,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:13,930 INFO L93 Difference]: Finished difference Result 264 states and 313 transitions. [2021-10-16 03:20:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:20:13,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-16 03:20:13,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:13,933 INFO L225 Difference]: With dead ends: 264 [2021-10-16 03:20:13,933 INFO L226 Difference]: Without dead ends: 262 [2021-10-16 03:20:13,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:20:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-16 03:20:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-10-16 03:20:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 254 states have (on average 1.220472440944882) internal successors, (310), 261 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 310 transitions. [2021-10-16 03:20:13,951 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 310 transitions. Word has length 29 [2021-10-16 03:20:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:13,951 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 310 transitions. [2021-10-16 03:20:13,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 310 transitions. [2021-10-16 03:20:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 03:20:13,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:13,953 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:13,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:14,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:14,171 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-16 03:20:14,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:14,171 INFO L82 PathProgramCache]: Analyzing trace with hash 783917853, now seen corresponding path program 1 times [2021-10-16 03:20:14,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:20:14,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745094963] [2021-10-16 03:20:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:14,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:20:14,190 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:20:14,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69495947] [2021-10-16 03:20:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:14,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:14,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:14,192 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:20:14,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 03:20:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:14,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:20:14,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:14,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:14,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:20:14,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745094963] [2021-10-16 03:20:14,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:20:14,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69495947] [2021-10-16 03:20:14,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69495947] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:14,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:14,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:20:14,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977817035] [2021-10-16 03:20:14,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:20:14,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:20:14,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:20:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:20:14,800 INFO L87 Difference]: Start difference. First operand 262 states and 310 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:14,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:14,966 INFO L93 Difference]: Finished difference Result 551 states and 649 transitions. [2021-10-16 03:20:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:20:14,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-16 03:20:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:14,969 INFO L225 Difference]: With dead ends: 551 [2021-10-16 03:20:14,970 INFO L226 Difference]: Without dead ends: 314 [2021-10-16 03:20:14,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:20:14,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-16 03:20:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2021-10-16 03:20:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 301 states have (on average 1.2093023255813953) internal successors, (364), 308 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 364 transitions. [2021-10-16 03:20:14,988 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 364 transitions. Word has length 30 [2021-10-16 03:20:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:14,989 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 364 transitions. [2021-10-16 03:20:14,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 364 transitions. [2021-10-16 03:20:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 03:20:14,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:14,990 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:15,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:15,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:15,207 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-16 03:20:15,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:15,207 INFO L82 PathProgramCache]: Analyzing trace with hash -312215074, now seen corresponding path program 1 times [2021-10-16 03:20:15,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:20:15,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661673458] [2021-10-16 03:20:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:15,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:20:15,229 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:20:15,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574897762] [2021-10-16 03:20:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:15,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:15,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:15,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:20:15,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 03:20:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:15,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:20:15,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:15,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:20:15,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:20:15,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661673458] [2021-10-16 03:20:15,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:20:15,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574897762] [2021-10-16 03:20:15,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574897762] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:15,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:15,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:20:15,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387616887] [2021-10-16 03:20:15,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:20:15,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:20:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:20:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:20:15,780 INFO L87 Difference]: Start difference. First operand 309 states and 364 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:15,920 INFO L93 Difference]: Finished difference Result 609 states and 729 transitions. [2021-10-16 03:20:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:20:15,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-16 03:20:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:15,923 INFO L225 Difference]: With dead ends: 609 [2021-10-16 03:20:15,923 INFO L226 Difference]: Without dead ends: 321 [2021-10-16 03:20:15,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:20:15,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-10-16 03:20:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-10-16 03:20:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 313 states have (on average 1.2012779552715656) internal successors, (376), 320 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:15,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 376 transitions. [2021-10-16 03:20:15,939 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 376 transitions. Word has length 35 [2021-10-16 03:20:15,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:15,940 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 376 transitions. [2021-10-16 03:20:15,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:15,940 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 376 transitions. [2021-10-16 03:20:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 03:20:15,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:15,942 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:15,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:16,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:16,165 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-16 03:20:16,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:16,165 INFO L82 PathProgramCache]: Analyzing trace with hash -399788226, now seen corresponding path program 1 times [2021-10-16 03:20:16,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:20:16,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153934927] [2021-10-16 03:20:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:16,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:20:16,184 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:20:16,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391476715] [2021-10-16 03:20:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:16,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:16,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:16,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:20:16,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 03:20:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:16,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:20:16,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:20:16,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:20:16,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:20:16,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153934927] [2021-10-16 03:20:16,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:20:16,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391476715] [2021-10-16 03:20:16,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391476715] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:20:16,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [24314702] [2021-10-16 03:20:16,780 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-10-16 03:20:16,781 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:20:16,787 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:20:16,792 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:20:16,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:20:16,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,864 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:20:16,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-16 03:20:16,865 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:20:16,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-16 03:20:16,870 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:20:16,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 03:20:16,872 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:20:16,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 03:20:16,874 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:20:16,874 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-16 03:20:16,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-16 03:20:16,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:20:16,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:20:16,908 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 03:20:16,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-16 03:20:16,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-16 03:20:16,912 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:20:16,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:20:16,935 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:20:16,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-16 03:20:16,938 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:20:16,938 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:166, output treesize:162 [2021-10-16 03:20:16,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:17,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:20:17,162 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_35| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:20:17,165 INFO L168 Benchmark]: Toolchain (without parser) took 31669.17 ms. Allocated memory was 88.1 MB in the beginning and 184.5 MB in the end (delta: 96.5 MB). Free memory was 49.1 MB in the beginning and 66.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 80.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:17,166 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 67.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:20:17,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1046.34 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 48.9 MB in the beginning and 84.2 MB in the end (delta: -35.3 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:17,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.45 ms. Allocated memory is still 132.1 MB. Free memory was 84.2 MB in the beginning and 76.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:17,167 INFO L168 Benchmark]: Boogie Preprocessor took 139.88 ms. Allocated memory is still 132.1 MB. Free memory was 76.1 MB in the beginning and 67.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:17,168 INFO L168 Benchmark]: RCFGBuilder took 5706.47 ms. Allocated memory was 132.1 MB in the beginning and 184.5 MB in the end (delta: 52.4 MB). Free memory was 67.2 MB in the beginning and 89.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 49.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:17,168 INFO L168 Benchmark]: TraceAbstraction took 24658.06 ms. Allocated memory is still 184.5 MB. Free memory was 89.6 MB in the beginning and 66.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:17,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 67.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1046.34 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 48.9 MB in the beginning and 84.2 MB in the end (delta: -35.3 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 107.45 ms. Allocated memory is still 132.1 MB. Free memory was 84.2 MB in the beginning and 76.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 139.88 ms. Allocated memory is still 132.1 MB. Free memory was 76.1 MB in the beginning and 67.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5706.47 ms. Allocated memory was 132.1 MB in the beginning and 184.5 MB in the end (delta: 52.4 MB). Free memory was 67.2 MB in the beginning and 89.6 MB in the end (delta: -22.5 MB). Peak memory consumption was 49.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24658.06 ms. Allocated memory is still 184.5 MB. Free memory was 89.6 MB in the beginning and 66.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_35| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_35|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:20:17,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01a15e0a-4b7d-48b2-80bf-20d794cd6662/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...