./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash becf68b1b41bf8f9c75117f82605e436bc8d5a41 ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash becf68b1b41bf8f9c75117f82605e436bc8d5a41 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:07:32,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:07:32,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:07:32,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:07:32,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:07:32,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:07:32,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:07:32,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:07:32,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:07:32,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:07:32,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:07:33,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:07:33,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:07:33,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:07:33,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:07:33,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:07:33,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:07:33,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:07:33,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:07:33,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:07:33,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:07:33,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:07:33,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:07:33,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:07:33,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:07:33,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:07:33,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:07:33,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:07:33,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:07:33,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:07:33,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:07:33,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:07:33,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:07:33,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:07:33,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:07:33,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:07:33,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:07:33,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:07:33,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:07:33,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:07:33,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:07:33,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:07:33,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:07:33,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:07:33,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:07:33,074 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:07:33,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:07:33,074 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:07:33,074 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:07:33,074 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:07:33,078 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:07:33,078 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:07:33,078 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:07:33,078 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:07:33,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:07:33,079 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:07:33,079 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:07:33,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:07:33,080 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:07:33,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:07:33,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:07:33,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:07:33,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:07:33,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:07:33,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:07:33,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:07:33,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:07:33,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:07:33,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:07:33,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:07:33,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:07:33,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:07:33,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:33,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:07:33,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:07:33,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:07:33,083 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:07:33,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:07:33,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:07:33,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:07:33,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:07:33,084 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_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> becf68b1b41bf8f9c75117f82605e436bc8d5a41 [2021-10-13 08:07:33,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:07:33,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:07:33,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:07:33,377 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:07:33,378 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:07:33,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-13 08:07:33,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data/1804baf20/d1f50f3839764ac19f510539eb68da47/FLAG78d8ce236 [2021-10-13 08:07:33,875 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:07:33,876 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-13 08:07:33,884 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data/1804baf20/d1f50f3839764ac19f510539eb68da47/FLAG78d8ce236 [2021-10-13 08:07:34,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data/1804baf20/d1f50f3839764ac19f510539eb68da47 [2021-10-13 08:07:34,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:07:34,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:07:34,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:34,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:07:34,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:07:34,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20af39c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34, skipping insertion in model container [2021-10-13 08:07:34,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:07:34,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:07:34,471 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_b583bb3d-668d-431c-9aec-bcaf35bd7793/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-13 08:07:34,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:34,504 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:07:34,519 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_b583bb3d-668d-431c-9aec-bcaf35bd7793/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-13 08:07:34,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:34,536 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:07:34,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34 WrapperNode [2021-10-13 08:07:34,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:34,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:34,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:07:34,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:07:34,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:34,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:07:34,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:07:34,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:07:34,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:07:34,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:07:34,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:07:34,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:07:34,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:34,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:07:34,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:07:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:07:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:07:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:07:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:07:34,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:07:34,988 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 08:07:34,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:34 BoogieIcfgContainer [2021-10-13 08:07:35,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:07:35,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:07:35,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:07:35,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:07:35,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:07:34" (1/3) ... [2021-10-13 08:07:35,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bd4597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:35, skipping insertion in model container [2021-10-13 08:07:35,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (2/3) ... [2021-10-13 08:07:35,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bd4597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:35, skipping insertion in model container [2021-10-13 08:07:35,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:34" (3/3) ... [2021-10-13 08:07:35,012 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2021-10-13 08:07:35,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:07:35,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:07:35,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:07:35,110 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:07:35,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:07:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 08:07:35,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:35,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 08:07:35,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:35,141 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-10-13 08:07:35,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:07:35,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568403279] [2021-10-13 08:07:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:35,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:07:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:35,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:07:35,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568403279] [2021-10-13 08:07:35,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568403279] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:07:35,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:07:35,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:07:35,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258308751] [2021-10-13 08:07:35,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:07:35,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:07:35,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:07:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:07:35,323 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:35,349 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-13 08:07:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:07:35,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-13 08:07:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:35,359 INFO L225 Difference]: With dead ends: 16 [2021-10-13 08:07:35,359 INFO L226 Difference]: Without dead ends: 7 [2021-10-13 08:07:35,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:07:35,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-13 08:07:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-13 08:07:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-13 08:07:35,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-13 08:07:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:35,388 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-13 08:07:35,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:35,389 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-13 08:07:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:07:35,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:35,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:07:35,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:07:35,390 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:35,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-10-13 08:07:35,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:07:35,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911639086] [2021-10-13 08:07:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:35,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:07:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:35,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:07:35,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911639086] [2021-10-13 08:07:35,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911639086] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:07:35,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013453236] [2021-10-13 08:07:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:35,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:35,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:35,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:07:35,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:07:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:35,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:07:35,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:35,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:35,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013453236] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:35,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [874857853] [2021-10-13 08:07:35,635 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-13 08:07:35,635 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:07:35,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:07:35,644 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:07:35,645 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:07:35,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:35,682 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:07:35,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:35,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-13 08:07:35,687 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:07:35,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:35,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 08:07:35,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-10-13 08:07:35,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:07:35,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:07:35,757 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 08:07:35,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 08:07:35,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:35,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 08:07:35,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:35,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 08:07:35,765 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:07:35,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:07:35,794 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:35,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:07:35,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-13 08:07:35,800 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:07:35,800 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:102, output treesize:90 [2021-10-13 08:07:35,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:36,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:36,016 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_8| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:07:36,020 INFO L168 Benchmark]: Toolchain (without parser) took 1738.25 ms. Allocated memory is still 121.6 MB. Free memory was 85.5 MB in the beginning and 44.5 MB in the end (delta: 41.0 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,021 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 121.6 MB. Free memory was 97.0 MB in the beginning and 97.0 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:07:36,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.34 ms. Allocated memory is still 121.6 MB. Free memory was 85.3 MB in the beginning and 96.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,022 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.75 ms. Allocated memory is still 121.6 MB. Free memory was 95.7 MB in the beginning and 94.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:07:36,023 INFO L168 Benchmark]: Boogie Preprocessor took 32.31 ms. Allocated memory is still 121.6 MB. Free memory was 94.5 MB in the beginning and 93.6 MB in the end (delta: 878.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,023 INFO L168 Benchmark]: RCFGBuilder took 399.17 ms. Allocated memory is still 121.6 MB. Free memory was 93.6 MB in the beginning and 83.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,024 INFO L168 Benchmark]: TraceAbstraction took 1013.67 ms. Allocated memory is still 121.6 MB. Free memory was 83.1 MB in the beginning and 44.5 MB in the end (delta: 38.5 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 121.6 MB. Free memory was 97.0 MB in the beginning and 97.0 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.34 ms. Allocated memory is still 121.6 MB. Free memory was 85.3 MB in the beginning and 96.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.75 ms. Allocated memory is still 121.6 MB. Free memory was 95.7 MB in the beginning and 94.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.31 ms. Allocated memory is still 121.6 MB. Free memory was 94.5 MB in the beginning and 93.6 MB in the end (delta: 878.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 399.17 ms. Allocated memory is still 121.6 MB. Free memory was 93.6 MB in the beginning and 83.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1013.67 ms. Allocated memory is still 121.6 MB. Free memory was 83.1 MB in the beginning and 44.5 MB in the end (delta: 38.5 MB). Peak memory consumption was 37.7 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_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:07:36,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:07:38,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:07:38,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:07:38,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:07:38,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:07:38,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:07:38,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:07:38,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:07:38,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:07:38,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:07:38,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:07:38,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:07:38,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:07:38,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:07:38,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:07:38,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:07:38,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:07:38,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:07:38,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:07:38,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:07:38,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:07:38,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:07:38,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:07:38,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:07:38,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:07:38,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:07:38,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:07:38,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:07:38,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:07:38,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:07:38,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:07:38,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:07:38,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:07:38,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:07:38,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:07:38,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:07:38,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:07:38,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:07:38,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:07:38,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:07:38,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:07:38,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:07:38,705 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:07:38,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:07:38,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:07:38,708 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:07:38,708 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:07:38,709 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:07:38,711 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:07:38,711 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:07:38,712 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:07:38,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:07:38,714 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:07:38,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:07:38,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:07:38,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:07:38,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:07:38,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:07:38,715 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:07:38,716 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:07:38,716 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:07:38,716 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:07:38,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:07:38,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:07:38,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:07:38,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:07:38,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:07:38,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:07:38,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:38,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:07:38,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:07:38,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:07:38,719 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:07:38,719 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:07:38,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:07:38,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:07:38,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:07:38,720 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> becf68b1b41bf8f9c75117f82605e436bc8d5a41 [2021-10-13 08:07:39,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:07:39,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:07:39,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:07:39,132 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:07:39,133 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:07:39,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-13 08:07:39,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data/8f07514b3/c154de897b27412495d9738a8b5c57c9/FLAGd878cf8e0 [2021-10-13 08:07:39,778 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:07:39,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2021-10-13 08:07:39,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data/8f07514b3/c154de897b27412495d9738a8b5c57c9/FLAGd878cf8e0 [2021-10-13 08:07:40,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/data/8f07514b3/c154de897b27412495d9738a8b5c57c9 [2021-10-13 08:07:40,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:07:40,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:07:40,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:40,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:07:40,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:07:40,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24965a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40, skipping insertion in model container [2021-10-13 08:07:40,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:07:40,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:07:40,330 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_b583bb3d-668d-431c-9aec-bcaf35bd7793/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-13 08:07:40,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:40,351 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:07:40,400 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_b583bb3d-668d-431c-9aec-bcaf35bd7793/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-10-13 08:07:40,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:40,438 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:07:40,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40 WrapperNode [2021-10-13 08:07:40,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:40,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:40,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:07:40,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:07:40,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:40,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:07:40,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:07:40,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:07:40,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:07:40,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:07:40,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:07:40,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:07:40,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (1/1) ... [2021-10-13 08:07:40,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:40,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:40,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:07:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:07:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:07:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:07:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:07:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:07:40,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:07:40,852 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 08:07:40,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:40 BoogieIcfgContainer [2021-10-13 08:07:40,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:07:40,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:07:40,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:07:40,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:07:40,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:07:40" (1/3) ... [2021-10-13 08:07:40,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f88bff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:40, skipping insertion in model container [2021-10-13 08:07:40,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:40" (2/3) ... [2021-10-13 08:07:40,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f88bff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:40, skipping insertion in model container [2021-10-13 08:07:40,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:40" (3/3) ... [2021-10-13 08:07:40,877 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2021-10-13 08:07:40,882 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:07:40,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:07:40,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:07:40,985 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:07:40,985 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:07:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:07:41,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:41,023 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:41,024 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:41,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-10-13 08:07:41,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:41,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508704812] [2021-10-13 08:07:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:41,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:41,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:41,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:41,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:07:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:41,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:07:41,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:41,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:41,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:41,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508704812] [2021-10-13 08:07:41,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508704812] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:07:41,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:07:41,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:07:41,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000012466] [2021-10-13 08:07:41,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:07:41,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:07:41,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:07:41,285 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:41,299 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-13 08:07:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:07:41,300 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-13 08:07:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:41,309 INFO L225 Difference]: With dead ends: 20 [2021-10-13 08:07:41,309 INFO L226 Difference]: Without dead ends: 8 [2021-10-13 08:07:41,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:07:41,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-13 08:07:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-13 08:07:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-13 08:07:41,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-10-13 08:07:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:41,344 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-13 08:07:41,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-13 08:07:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:07:41,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:41,345 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:41,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:41,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:41,557 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:41,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-10-13 08:07:41,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:41,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709868793] [2021-10-13 08:07:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:41,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:41,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:41,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:41,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:07:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:41,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:07:41,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:41,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:41,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:41,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709868793] [2021-10-13 08:07:41,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709868793] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:07:41,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:07:41,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:07:41,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164287428] [2021-10-13 08:07:41,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:07:41,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:41,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:07:41,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:07:41,693 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:41,710 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-13 08:07:41,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:07:41,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 7 [2021-10-13 08:07:41,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:41,711 INFO L225 Difference]: With dead ends: 14 [2021-10-13 08:07:41,711 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 08:07:41,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:07:41,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 08:07:41,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 08:07:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 08:07:41,716 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-13 08:07:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:41,716 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 08:07:41,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:41,717 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 08:07:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:07:41,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:41,718 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:41,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:41,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:41,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:41,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:41,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1384978123, now seen corresponding path program 1 times [2021-10-13 08:07:41,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:41,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498949244] [2021-10-13 08:07:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:41,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:41,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:41,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:41,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:07:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:41,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:07:41,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:42,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:42,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:42,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498949244] [2021-10-13 08:07:42,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498949244] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:42,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1223520908] [2021-10-13 08:07:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:42,189 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:07:42,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:07:42,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:07:42,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 08:07:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:42,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:07:42,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:42,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:42,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1223520908] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:42,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361696536] [2021-10-13 08:07:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:42,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:42,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:42,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:07:42,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 08:07:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:42,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:07:42,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:42,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:42,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361696536] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:42,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:07:42,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-13 08:07:42,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10317719] [2021-10-13 08:07:42,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:07:42,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:42,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:07:42,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:07:42,619 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:42,716 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-10-13 08:07:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:07:42,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 9 [2021-10-13 08:07:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:42,718 INFO L225 Difference]: With dead ends: 18 [2021-10-13 08:07:42,718 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 08:07:42,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:07:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 08:07:42,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 08:07:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 08:07:42,723 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2021-10-13 08:07:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:42,723 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 08:07:42,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 08:07:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 08:07:42,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:42,725 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:42,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:42,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:43,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 08:07:43,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:43,326 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:43,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:43,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1963731147, now seen corresponding path program 2 times [2021-10-13 08:07:43,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:43,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773464112] [2021-10-13 08:07:43,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:07:43,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:43,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:43,329 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:43,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 08:07:43,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:07:43,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:07:43,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:07:43,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:43,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:43,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:43,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773464112] [2021-10-13 08:07:43,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773464112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:43,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1346013084] [2021-10-13 08:07:43,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:07:43,771 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:07:43,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:07:43,776 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:07:43,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 08:07:43,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:07:43,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:07:43,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:07:43,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:43,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:44,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1346013084] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:44,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749619594] [2021-10-13 08:07:44,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:07:44,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:44,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:44,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:07:44,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 08:07:44,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:07:44,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:07:44,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:07:44,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:44,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:44,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749619594] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:44,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:07:44,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2021-10-13 08:07:44,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92878165] [2021-10-13 08:07:44,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 08:07:44,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:44,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 08:07:44,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-13 08:07:44,245 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:44,694 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2021-10-13 08:07:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 08:07:44,697 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 13 [2021-10-13 08:07:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:44,698 INFO L225 Difference]: With dead ends: 26 [2021-10-13 08:07:44,698 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 08:07:44,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 565.2ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-13 08:07:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 08:07:44,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-13 08:07:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-13 08:07:44,703 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-10-13 08:07:44,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:44,707 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-13 08:07:44,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-13 08:07:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 08:07:44,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:44,709 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:44,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:44,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:45,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:45,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:45,321 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:45,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1090473163, now seen corresponding path program 3 times [2021-10-13 08:07:45,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:45,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110806975] [2021-10-13 08:07:45,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 08:07:45,322 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:45,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:45,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:45,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 08:07:45,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 08:07:45,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:07:45,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 08:07:45,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:45,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:46,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:46,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110806975] [2021-10-13 08:07:46,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110806975] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:46,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [335028523] [2021-10-13 08:07:46,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 08:07:46,447 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:07:46,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:07:46,460 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:07:46,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 08:07:46,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 08:07:46,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:07:46,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 08:07:46,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:46,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:46,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [335028523] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:46,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906905376] [2021-10-13 08:07:46,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 08:07:46,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:46,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:46,836 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:07:46,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 08:07:46,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 08:07:46,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:07:46,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 08:07:46,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:47,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:48,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906905376] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:48,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:07:48,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 46 [2021-10-13 08:07:48,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893148762] [2021-10-13 08:07:48,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-13 08:07:48,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:48,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-13 08:07:48,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=629, Invalid=1441, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 08:07:48,608 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:51,302 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2021-10-13 08:07:51,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 08:07:51,302 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 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 21 [2021-10-13 08:07:51,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:51,303 INFO L225 Difference]: With dead ends: 42 [2021-10-13 08:07:51,303 INFO L226 Difference]: Without dead ends: 38 [2021-10-13 08:07:51,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4495.2ms TimeCoverageRelationStatistics Valid=1215, Invalid=2445, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 08:07:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-13 08:07:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-13 08:07:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:51,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-13 08:07:51,315 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 21 [2021-10-13 08:07:51,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:51,316 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-13 08:07:51,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:51,317 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-13 08:07:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 08:07:51,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:51,318 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:51,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:51,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:51,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:51,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:51,921 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:51,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:51,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1924764875, now seen corresponding path program 4 times [2021-10-13 08:07:51,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:51,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393148974] [2021-10-13 08:07:51,922 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 08:07:51,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:51,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:51,923 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:51,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 08:07:52,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 08:07:52,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:07:52,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 08:07:52,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:52,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:55,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:55,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393148974] [2021-10-13 08:07:55,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393148974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:55,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [499167762] [2021-10-13 08:07:55,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 08:07:55,462 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:07:55,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:07:55,469 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:07:55,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-13 08:07:55,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 08:07:55,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:07:55,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 08:07:55,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:55,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:56,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [499167762] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:56,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496546946] [2021-10-13 08:07:56,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 08:07:56,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:07:56,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:56,018 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:07:56,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 08:07:56,217 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 08:07:56,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:07:56,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 08:07:56,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:56,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:56,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496546946] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:56,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:07:56,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33, 33, 33, 33] total 64 [2021-10-13 08:07:56,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881599163] [2021-10-13 08:07:56,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-13 08:07:56,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:56,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-13 08:07:56,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 08:07:56,529 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 64 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:08,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:08,775 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2021-10-13 08:08:08,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-13 08:08:08,776 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 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 37 [2021-10-13 08:08:08,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:08,777 INFO L225 Difference]: With dead ends: 74 [2021-10-13 08:08:08,777 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 08:08:08,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 14556.2ms TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2021-10-13 08:08:08,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 08:08:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-13 08:08:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-10-13 08:08:08,793 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 37 [2021-10-13 08:08:08,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:08,793 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-10-13 08:08:08,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-10-13 08:08:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 08:08:08,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:08,796 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:08,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:09,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:09,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:09,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:08:09,411 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:08:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:09,411 INFO L82 PathProgramCache]: Analyzing trace with hash 763241675, now seen corresponding path program 5 times [2021-10-13 08:08:09,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:08:09,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794887736] [2021-10-13 08:08:09,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 08:08:09,412 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:08:09,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:08:09,413 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:08:09,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 08:08:09,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-10-13 08:08:09,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:08:09,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-13 08:08:09,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:11,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:08:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:21,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:08:21,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794887736] [2021-10-13 08:08:21,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794887736] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:08:21,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [932688513] [2021-10-13 08:08:21,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 08:08:21,780 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:08:21,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:08:21,780 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:08:21,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-13 08:08:22,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-10-13 08:08:22,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:08:22,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-13 08:08:22,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:22,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:08:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:39,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [932688513] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:08:39,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680711670] [2021-10-13 08:08:39,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 08:08:39,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:08:39,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:08:39,391 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:08:39,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 08:08:39,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-10-13 08:08:39,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:08:39,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-13 08:08:39,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:40,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:00,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680711670] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:09:00,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:09:00,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65, 65, 65, 65] total 244 [2021-10-13 08:09:00,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018415776] [2021-10-13 08:09:00,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 244 states [2021-10-13 08:09:00,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:09:00,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2021-10-13 08:09:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14802, Invalid=44490, Unknown=0, NotChecked=0, Total=59292 [2021-10-13 08:09:00,821 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 244 states, 244 states have (on average 1.028688524590164) internal successors, (251), 244 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:31,261 INFO L93 Difference]: Finished difference Result 138 states and 201 transitions. [2021-10-13 08:10:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-10-13 08:10:31,262 INFO L78 Accepts]: Start accepts. Automaton has has 244 states, 244 states have (on average 1.028688524590164) internal successors, (251), 244 states have internal predecessors, (251), 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 69 [2021-10-13 08:10:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:31,265 INFO L225 Difference]: With dead ends: 138 [2021-10-13 08:10:31,265 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 08:10:31,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18284 ImplicationChecksByTransitivity, 134440.4ms TimeCoverageRelationStatistics Valid=23746, Invalid=70196, Unknown=0, NotChecked=0, Total=93942 [2021-10-13 08:10:31,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 08:10:31,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-13 08:10:31,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0150375939849625) internal successors, (135), 133 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2021-10-13 08:10:31,295 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 69 [2021-10-13 08:10:31,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:31,296 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2021-10-13 08:10:31,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 244 states, 244 states have (on average 1.028688524590164) internal successors, (251), 244 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2021-10-13 08:10:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-13 08:10:31,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:31,302 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:10:31,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:31,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:31,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:31,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:31,903 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:10:31,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:31,903 INFO L82 PathProgramCache]: Analyzing trace with hash 840527819, now seen corresponding path program 6 times [2021-10-13 08:10:31,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:31,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604045744] [2021-10-13 08:10:31,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 08:10:31,905 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:31,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:31,907 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:31,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 08:10:32,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2021-10-13 08:10:32,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:10:32,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-13 08:10:32,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:37,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:37,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:37,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604045744] [2021-10-13 08:10:37,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604045744] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:37,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [478006722] [2021-10-13 08:10:37,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 08:10:37,988 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:37,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:10:37,989 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:10:38,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-13 08:10:39,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2021-10-13 08:10:39,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:10:39,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-13 08:10:39,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:39,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:39,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [478006722] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:39,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776483777] [2021-10-13 08:10:39,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 08:10:39,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:10:39,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:10:39,880 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:10:39,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 08:10:40,884 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2021-10-13 08:10:40,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:10:40,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-13 08:10:40,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:41,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:41,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776483777] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:41,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:10:41,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 104, 104, 104, 104] total 105 [2021-10-13 08:10:41,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760079177] [2021-10-13 08:10:41,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-13 08:10:41,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:10:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-13 08:10:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=10712, Unknown=0, NotChecked=0, Total=10920 [2021-10-13 08:10:41,659 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand has 105 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:46,453 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2021-10-13 08:10:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-13 08:10:46,456 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 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 107 [2021-10-13 08:10:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:46,457 INFO L225 Difference]: With dead ends: 138 [2021-10-13 08:10:46,458 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 08:10:46,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4505.3ms TimeCoverageRelationStatistics Valid=213, Invalid=10917, Unknown=0, NotChecked=0, Total=11130 [2021-10-13 08:10:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 08:10:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-13 08:10:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0075187969924813) internal successors, (134), 133 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-10-13 08:10:46,478 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 107 [2021-10-13 08:10:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:46,479 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-10-13 08:10:46,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-10-13 08:10:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-13 08:10:46,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:46,482 INFO L512 BasicCegarLoop]: trace histogram [126, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:10:46,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:46,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2021-10-13 08:10:46,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-13 08:10:47,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:10:47,120 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:10:47,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:47,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2142812981, now seen corresponding path program 7 times [2021-10-13 08:10:47,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:47,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595790078] [2021-10-13 08:10:47,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 08:10:47,122 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:47,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:47,123 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:47,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 08:10:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:47,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-13 08:10:47,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-13 08:10:52,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-13 08:11:14,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:11:14,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595790078] [2021-10-13 08:11:14,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595790078] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:14,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1412434793] [2021-10-13 08:11:14,720 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 08:11:14,720 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:11:14,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:11:14,722 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:11:14,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-13 08:11:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:15,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-13 08:11:15,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-13 08:11:16,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-13 08:11:16,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1412434793] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:16,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324842566] [2021-10-13 08:11:16,788 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 08:11:16,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:16,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:16,796 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:16,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 08:11:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:17,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-13 08:11:17,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-13 08:11:17,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 2626 proven. 5050 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-10-13 08:11:18,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324842566] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:18,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:11:18,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103, 103, 103, 103] total 204 [2021-10-13 08:11:18,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103690741] [2021-10-13 08:11:18,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2021-10-13 08:11:18,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:11:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2021-10-13 08:11:18,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5556, Invalid=35856, Unknown=0, NotChecked=0, Total=41412 [2021-10-13 08:11:18,448 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 204 states, 204 states have (on average 1.0343137254901962) internal successors, (211), 204 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:24,601 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2021-10-13 08:11:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-13 08:11:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 204 states have (on average 1.0343137254901962) internal successors, (211), 204 states have internal predecessors, (211), 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 133 [2021-10-13 08:11:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:24,602 INFO L225 Difference]: With dead ends: 134 [2021-10-13 08:11:24,602 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:11:24,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26076.2ms TimeCoverageRelationStatistics Valid=5556, Invalid=35856, Unknown=0, NotChecked=0, Total=41412 [2021-10-13 08:11:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:11:24,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:11:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:24,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:11:24,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 133 [2021-10-13 08:11:24,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:24,605 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:11:24,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 1.0343137254901962) internal successors, (211), 204 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:11:24,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:11:24,608 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:11:24,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:24,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:25,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:25,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:11:25,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:11:25,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:25,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:31,511 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification. DAG size of input: 696 DAG size of output: 457 [2021-10-13 08:11:31,516 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:11:31,517 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (or (and (= (_ bv122 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv61 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv19 32)) (= ULTIMATE.start_main_~j~0 (_ bv38 32))) (and (= (_ bv150 32) ULTIMATE.start_main_~j~0) (= (_ bv75 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv72 32) ULTIMATE.start_main_~j~0) (= (_ bv36 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv72 32) ULTIMATE.start_main_~i~0) (= (_ bv144 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv94 32) ULTIMATE.start_main_~i~0) (= (_ bv188 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv20 32)) (= ULTIMATE.start_main_~j~0 (_ bv40 32))) (and (= (_ bv58 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv116 32))) (and (= (_ bv3 32) ULTIMATE.start_main_~i~0) (= (_ bv6 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv120 32) ULTIMATE.start_main_~j~0) (= (_ bv60 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv174 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv87 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv51 32)) (= ULTIMATE.start_main_~j~0 (_ bv102 32))) (and (= (_ bv88 32) ULTIMATE.start_main_~i~0) (= (_ bv176 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv172 32) ULTIMATE.start_main_~j~0) (= (_ bv86 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv45 32)) (= (_ bv90 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv55 32) ULTIMATE.start_main_~i~0) (= (_ bv110 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv82 32) ULTIMATE.start_main_~j~0) (= (_ bv41 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv8 32) ULTIMATE.start_main_~i~0) (= (_ bv16 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv146 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv73 32))) (and (= (_ bv84 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv42 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv30 32)) (= ULTIMATE.start_main_~i~0 (_ bv15 32))) (and (= (_ bv11 32) ULTIMATE.start_main_~i~0) (= (_ bv22 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv112 32) ULTIMATE.start_main_~j~0) (= (_ bv56 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv21 32)) (= ULTIMATE.start_main_~j~0 (_ bv42 32))) (and (= (_ bv27 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv54 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv178 32)) (= (_ bv89 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv104 32)) (= ULTIMATE.start_main_~i~0 (_ bv52 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv168 32)) (= (_ bv84 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv18 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv9 32))) (and (= (_ bv88 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv44 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv12 32)) (= (_ bv6 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv140 32) ULTIMATE.start_main_~j~0) (= (_ bv70 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv166 32)) (= (_ bv83 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv74 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv37 32))) (and (= (_ bv162 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv81 32))) (and (= (_ bv136 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv68 32))) (and (= (_ bv2 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv1 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv10 32)) (= ULTIMATE.start_main_~i~0 (_ bv5 32))) (and (= (_ bv29 32) ULTIMATE.start_main_~i~0) (= (_ bv58 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv96 32) ULTIMATE.start_main_~j~0) (= (_ bv48 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv126 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv63 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv69 32)) (= ULTIMATE.start_main_~j~0 (_ bv138 32))) (and (= (_ bv85 32) ULTIMATE.start_main_~i~0) (= (_ bv170 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv194 32)) (= (_ bv97 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv54 32)) (= ULTIMATE.start_main_~j~0 (_ bv108 32))) (and (= (_ bv91 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv182 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv12 32)) (= ULTIMATE.start_main_~j~0 (_ bv24 32))) (and (= (_ bv98 32) ULTIMATE.start_main_~i~0) (= (_ bv196 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv0 32)) (= ULTIMATE.start_main_~j~0 (_ bv0 32))) (and (= (_ bv48 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv24 32))) (and (= (_ bv78 32) ULTIMATE.start_main_~i~0) (= (_ bv156 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv46 32)) (= (_ bv23 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv14 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv7 32))) (and (= (_ bv132 32) ULTIMATE.start_main_~j~0) (= (_ bv66 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv64 32)) (= ULTIMATE.start_main_~i~0 (_ bv32 32))) (and (= (_ bv16 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv32 32))) (and (= (_ bv22 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv44 32))) (and (= (_ bv79 32) ULTIMATE.start_main_~i~0) (= (_ bv158 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv114 32)) (= ULTIMATE.start_main_~i~0 (_ bv57 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv13 32)) (= (_ bv26 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv200 32) ULTIMATE.start_main_~j~0) (= (_ bv100 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv80 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv160 32))) (and (= (_ bv39 32) ULTIMATE.start_main_~i~0) (= (_ bv78 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv77 32)) (= ULTIMATE.start_main_~j~0 (_ bv154 32))) (and (= (_ bv118 32) ULTIMATE.start_main_~j~0) (= (_ bv59 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv56 32) ULTIMATE.start_main_~j~0) (= (_ bv28 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv68 32)) (= (_ bv34 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv50 32)) (= (_ bv100 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv198 32) ULTIMATE.start_main_~j~0) (= (_ bv99 32) ULTIMATE.start_main_~i~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv142 32)) (= ULTIMATE.start_main_~i~0 (_ bv71 32))) (and (= (_ bv152 32) ULTIMATE.start_main_~j~0) (= (_ bv76 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv190 32) ULTIMATE.start_main_~j~0) (= (_ bv95 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv18 32) ULTIMATE.start_main_~i~0) (= (_ bv36 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv186 32)) (= ULTIMATE.start_main_~i~0 (_ bv93 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv38 32)) (= (_ bv76 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv26 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv52 32))) (and (= ULTIMATE.start_main_~i~0 (_ bv43 32)) (= (_ bv86 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv130 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv65 32))) (and (= (_ bv128 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv64 32))) (and (= (_ bv28 32) ULTIMATE.start_main_~j~0) (= (_ bv14 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv25 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv50 32))) (and (= (_ bv53 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv106 32))) (and (= (_ bv49 32) ULTIMATE.start_main_~i~0) (= (_ bv98 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv47 32)) (= (_ bv94 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv2 32) ULTIMATE.start_main_~i~0) (= (_ bv4 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv40 32)) (= (_ bv80 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~i~0 (_ bv46 32)) (= ULTIMATE.start_main_~j~0 (_ bv92 32))) (and (= (_ bv184 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv92 32))) (and (= (_ bv34 32) ULTIMATE.start_main_~j~0) (= (_ bv17 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv74 32) ULTIMATE.start_main_~i~0) (= (_ bv148 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv4 32) ULTIMATE.start_main_~i~0) (= (_ bv8 32) ULTIMATE.start_main_~j~0)) (and (= (_ bv134 32) ULTIMATE.start_main_~j~0) (= (_ bv67 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv180 32) ULTIMATE.start_main_~j~0) (= (_ bv90 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv96 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv192 32))) (and (= ULTIMATE.start_main_~j~0 (_ bv20 32)) (= ULTIMATE.start_main_~i~0 (_ bv10 32))) (and (= (_ bv35 32) ULTIMATE.start_main_~i~0) (= (_ bv70 32) ULTIMATE.start_main_~j~0)) (and (= ULTIMATE.start_main_~j~0 (_ bv164 32)) (= (_ bv82 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv66 32) ULTIMATE.start_main_~j~0) (= (_ bv33 32) ULTIMATE.start_main_~i~0)) (and (= (_ bv62 32) ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~j~0 (_ bv124 32))) (and (= (_ bv60 32) ULTIMATE.start_main_~j~0) (= ULTIMATE.start_main_~i~0 (_ bv30 32))) (and (= (_ bv31 32) ULTIMATE.start_main_~i~0) (= (_ bv62 32) ULTIMATE.start_main_~j~0))) [2021-10-13 08:11:31,518 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2021-10-13 08:11:31,518 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-13 08:11:31,518 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:11:31,518 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:11:31,518 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:11:31,518 INFO L860 garLoopResultBuilder]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-13 08:11:31,519 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-13 08:11:31,519 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-13 08:11:31,519 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-13 08:11:31,519 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-13 08:11:31,524 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:11:31,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:11:31 BoogieIcfgContainer [2021-10-13 08:11:31,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:11:31,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:11:31,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:11:31,569 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:11:31,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:40" (3/4) ... [2021-10-13 08:11:31,573 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:11:31,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 08:11:31,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 08:11:31,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:11:31,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:11:31,627 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:11:31,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:11:31,629 INFO L168 Benchmark]: Toolchain (without parser) took 231482.32 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 55.8 MB in the beginning and 32.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 53.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:31,629 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 52.5 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:11:31,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.33 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 55.4 MB in the end (delta: 214.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:31,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.03 ms. Allocated memory is still 71.3 MB. Free memory was 55.4 MB in the beginning and 54.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:11:31,631 INFO L168 Benchmark]: Boogie Preprocessor took 37.90 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 52.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:11:31,631 INFO L168 Benchmark]: RCFGBuilder took 338.24 ms. Allocated memory is still 71.3 MB. Free memory was 52.9 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:31,632 INFO L168 Benchmark]: TraceAbstraction took 230712.32 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 43.5 MB in the beginning and 35.3 MB in the end (delta: 8.3 MB). Peak memory consumption was 52.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:31,632 INFO L168 Benchmark]: Witness Printer took 59.60 ms. Allocated memory is still 100.7 MB. Free memory was 35.3 MB in the beginning and 32.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:31,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 52.5 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.33 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 55.4 MB in the end (delta: 214.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.03 ms. Allocated memory is still 71.3 MB. Free memory was 55.4 MB in the beginning and 54.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.90 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 52.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 338.24 ms. Allocated memory is still 71.3 MB. Free memory was 52.9 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 230712.32 ms. Allocated memory was 71.3 MB in the beginning and 100.7 MB in the end (delta: 29.4 MB). Free memory was 43.5 MB in the beginning and 35.3 MB in the end (delta: 8.3 MB). Peak memory consumption was 52.7 MB. Max. memory is 16.1 GB. * Witness Printer took 59.60 ms. Allocated memory is still 100.7 MB. Free memory was 35.3 MB in the beginning and 32.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 230563.4ms, OverallIterations: 9, TraceHistogramMax: 126, EmptinessCheckTime: 41.4ms, AutomataDifference: 117009.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6306.8ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 63 SDtfs, 303 SDslu, 1043 SDs, 0 SdLazy, 26067 SolverSat, 606 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12326.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2433 GetRequests, 1641 SyntacticMatches, 0 SemanticMatches, 792 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18932 ImplicationChecksByTransitivity, 184746.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=7, InterpolantAutomatonStates: 463, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 89.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 104 NumberOfFragments, 709 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 568.9ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 3060 FormulaSimplificationTreeSizeReductionInter, 5731.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 355.7ms SsaConstructionTime, 3917.7ms SatisfiabilityAnalysisTime, 93353.2ms InterpolantComputationTime, 1181 NumberOfCodeBlocks, 1181 NumberOfCodeBlocksAsserted, 290 NumberOfCheckSat, 2316 ConstructedInterpolants, 0 QuantifiedInterpolants, 8690 SizeOfPredicates, 42 NumberOfNonLiveVariables, 3658 ConjunctsInSsa, 1007 ConjunctsInUnsatCore, 46 InterpolantComputations, 4 PerfectInterpolantSequences, 17706/93588 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((122bv32 == j && i == 61bv32) || (i == 19bv32 && j == 38bv32)) || (150bv32 == j && 75bv32 == i)) || (72bv32 == j && 36bv32 == i)) || (72bv32 == i && 144bv32 == j)) || (94bv32 == i && 188bv32 == j)) || (i == 20bv32 && j == 40bv32)) || (58bv32 == i && j == 116bv32)) || (3bv32 == i && 6bv32 == j)) || (120bv32 == j && 60bv32 == i)) || (174bv32 == j && i == 87bv32)) || (i == 51bv32 && j == 102bv32)) || (88bv32 == i && 176bv32 == j)) || (172bv32 == j && 86bv32 == i)) || (i == 45bv32 && 90bv32 == j)) || (55bv32 == i && 110bv32 == j)) || (82bv32 == j && 41bv32 == i)) || (8bv32 == i && 16bv32 == j)) || (146bv32 == j && i == 73bv32)) || (84bv32 == j && i == 42bv32)) || (j == 30bv32 && i == 15bv32)) || (11bv32 == i && 22bv32 == j)) || (112bv32 == j && 56bv32 == i)) || (i == 21bv32 && j == 42bv32)) || (27bv32 == i && j == 54bv32)) || (j == 178bv32 && 89bv32 == i)) || (j == 104bv32 && i == 52bv32)) || (j == 168bv32 && 84bv32 == i)) || (18bv32 == j && i == 9bv32)) || (88bv32 == j && i == 44bv32)) || (j == 12bv32 && 6bv32 == i)) || (140bv32 == j && 70bv32 == i)) || (j == 166bv32 && 83bv32 == i)) || (74bv32 == j && i == 37bv32)) || (162bv32 == j && i == 81bv32)) || (136bv32 == j && i == 68bv32)) || (2bv32 == j && i == 1bv32)) || (j == 10bv32 && i == 5bv32)) || (29bv32 == i && 58bv32 == j)) || (96bv32 == j && 48bv32 == i)) || (126bv32 == j && i == 63bv32)) || (i == 69bv32 && j == 138bv32)) || (85bv32 == i && 170bv32 == j)) || (j == 194bv32 && 97bv32 == i)) || (i == 54bv32 && j == 108bv32)) || (91bv32 == i && j == 182bv32)) || (i == 12bv32 && j == 24bv32)) || (98bv32 == i && 196bv32 == j)) || (i == 0bv32 && j == 0bv32)) || (48bv32 == j && i == 24bv32)) || (78bv32 == i && 156bv32 == j)) || (j == 46bv32 && 23bv32 == i)) || (14bv32 == j && i == 7bv32)) || (132bv32 == j && 66bv32 == i)) || (j == 64bv32 && i == 32bv32)) || (16bv32 == i && j == 32bv32)) || (22bv32 == i && j == 44bv32)) || (79bv32 == i && 158bv32 == j)) || (j == 114bv32 && i == 57bv32)) || (i == 13bv32 && 26bv32 == j)) || (200bv32 == j && 100bv32 == i)) || (80bv32 == i && j == 160bv32)) || (39bv32 == i && 78bv32 == j)) || (i == 77bv32 && j == 154bv32)) || (118bv32 == j && 59bv32 == i)) || (56bv32 == j && 28bv32 == i)) || (j == 68bv32 && 34bv32 == i)) || (i == 50bv32 && 100bv32 == j)) || (198bv32 == j && 99bv32 == i)) || (j == 142bv32 && i == 71bv32)) || (152bv32 == j && 76bv32 == i)) || (190bv32 == j && 95bv32 == i)) || (18bv32 == i && 36bv32 == j)) || (j == 186bv32 && i == 93bv32)) || (i == 38bv32 && 76bv32 == j)) || (26bv32 == i && j == 52bv32)) || (i == 43bv32 && 86bv32 == j)) || (130bv32 == j && i == 65bv32)) || (128bv32 == j && i == 64bv32)) || (28bv32 == j && 14bv32 == i)) || (25bv32 == i && j == 50bv32)) || (53bv32 == i && j == 106bv32)) || (49bv32 == i && 98bv32 == j)) || (i == 47bv32 && 94bv32 == j)) || (2bv32 == i && 4bv32 == j)) || (i == 40bv32 && 80bv32 == j)) || (i == 46bv32 && j == 92bv32)) || (184bv32 == j && i == 92bv32)) || (34bv32 == j && 17bv32 == i)) || (74bv32 == i && 148bv32 == j)) || (4bv32 == i && 8bv32 == j)) || (134bv32 == j && 67bv32 == i)) || (180bv32 == j && 90bv32 == i)) || (96bv32 == i && j == 192bv32)) || (j == 20bv32 && i == 10bv32)) || (35bv32 == i && 70bv32 == j)) || (j == 164bv32 && 82bv32 == i)) || (66bv32 == j && 33bv32 == i)) || (62bv32 == i && j == 124bv32)) || (60bv32 == j && i == 30bv32)) || (31bv32 == i && 62bv32 == j) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 08:11:31,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b583bb3d-668d-431c-9aec-bcaf35bd7793/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...