./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs --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 b909ccf6f1c4cf06610031e778229605609d3376 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs --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 b909ccf6f1c4cf06610031e778229605609d3376 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:11:08,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:11:08,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:11:08,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:11:08,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:11:08,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:11:08,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:11:08,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:11:08,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:11:08,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:11:08,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:11:08,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:11:08,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:11:08,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:11:08,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:11:08,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:11:08,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:11:08,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:11:08,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:11:08,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:11:08,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:11:08,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:11:08,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:11:08,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:11:08,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:11:08,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:11:08,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:11:08,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:11:08,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:11:08,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:11:08,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:11:08,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:11:08,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:11:08,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:11:08,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:11:08,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:11:08,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:11:08,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:11:08,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:11:08,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:11:08,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:11:08,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:11:08,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:11:08,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:11:08,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:11:08,570 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:11:08,570 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:11:08,570 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:11:08,570 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:11:08,570 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:11:08,571 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:11:08,571 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:11:08,578 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:11:08,579 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:11:08,579 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:11:08,579 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:11:08,579 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:11:08,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:11:08,580 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:11:08,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:11:08,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:11:08,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:11:08,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:11:08,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:11:08,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:11:08,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:11:08,582 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:11:08,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:11:08,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:11:08,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:11:08,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:11:08,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:11:08,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:11:08,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:11:08,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:11:08,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:11:08,586 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:11:08,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:11:08,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:11:08,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:11:08,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:11:08,587 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_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b909ccf6f1c4cf06610031e778229605609d3376 [2021-10-16 03:11:08,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:11:08,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:11:08,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:11:08,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:11:08,911 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:11:08,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2021-10-16 03:11:08,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data/49f3360e6/06674c67f5b04cac8413da3b0021676f/FLAG3acc862ef [2021-10-16 03:11:09,415 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:11:09,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2021-10-16 03:11:09,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data/49f3360e6/06674c67f5b04cac8413da3b0021676f/FLAG3acc862ef [2021-10-16 03:11:09,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data/49f3360e6/06674c67f5b04cac8413da3b0021676f [2021-10-16 03:11:09,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:11:09,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:11:09,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:11:09,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:11:09,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:11:09,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:11:09" (1/1) ... [2021-10-16 03:11:09,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553da784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:09, skipping insertion in model container [2021-10-16 03:11:09,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:11:09" (1/1) ... [2021-10-16 03:11:09,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:11:09,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:11:10,134 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1126,1139] [2021-10-16 03:11:10,161 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1880,1893] [2021-10-16 03:11:10,175 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2401,2414] [2021-10-16 03:11:10,181 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3193,3206] [2021-10-16 03:11:10,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:11:10,201 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:11:10,218 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1126,1139] [2021-10-16 03:11:10,223 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1880,1893] [2021-10-16 03:11:10,226 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2401,2414] [2021-10-16 03:11:10,230 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3193,3206] [2021-10-16 03:11:10,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:11:10,246 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:11:10,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10 WrapperNode [2021-10-16 03:11:10,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:11:10,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:11:10,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:11:10,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:11:10,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:11:10,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:11:10,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:11:10,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:11:10,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:11:10,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:11:10,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:11:10,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:11:10,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (1/1) ... [2021-10-16 03:11:10,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:11:10,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:11:10,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:11:10,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:11:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:11:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:11:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:11:10,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:11:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:11:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:11:10,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:11:10,872 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 03:11:10,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:11:10 BoogieIcfgContainer [2021-10-16 03:11:10,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:11:10,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:11:10,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:11:10,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:11:10,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:11:09" (1/3) ... [2021-10-16 03:11:10,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ea7a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:11:10, skipping insertion in model container [2021-10-16 03:11:10,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:10" (2/3) ... [2021-10-16 03:11:10,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ea7a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:11:10, skipping insertion in model container [2021-10-16 03:11:10,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:11:10" (3/3) ... [2021-10-16 03:11:10,884 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2021-10-16 03:11:10,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:11:10,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-16 03:11:10,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:11:10,944 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:11:10,944 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 03:11:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 30 states have (on average 1.7) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:11:10,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:10,965 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:10,966 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:10,972 INFO L82 PathProgramCache]: Analyzing trace with hash -238958999, now seen corresponding path program 1 times [2021-10-16 03:11:10,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:11:10,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334149491] [2021-10-16 03:11:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:10,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:11:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:11,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:11:11,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334149491] [2021-10-16 03:11:11,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334149491] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:11,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:11,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:11:11,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738146253] [2021-10-16 03:11:11,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:11:11,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:11:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:11:11,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:11,282 INFO L87 Difference]: Start difference. First operand has 35 states, 30 states have (on average 1.7) internal successors, (51), 34 states have internal predecessors, (51), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:11,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:11,306 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2021-10-16 03:11:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:11:11,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 03:11:11,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:11,316 INFO L225 Difference]: With dead ends: 47 [2021-10-16 03:11:11,316 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 03:11:11,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 03:11:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-10-16 03:11:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-10-16 03:11:11,359 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 8 [2021-10-16 03:11:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:11,359 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-10-16 03:11:11,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:11,360 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-10-16 03:11:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:11:11,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:11,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:11,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:11:11,362 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:11,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:11,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1055861953, now seen corresponding path program 1 times [2021-10-16 03:11:11,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:11:11,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113683081] [2021-10-16 03:11:11,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:11,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:11:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:11,457 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:11:11,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113683081] [2021-10-16 03:11:11,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113683081] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:11,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:11,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:11:11,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756299348] [2021-10-16 03:11:11,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:11:11,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:11:11,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:11:11,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:11,461 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-10-16 03:11:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:11,532 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2021-10-16 03:11:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:11:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 9 [2021-10-16 03:11:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:11,536 INFO L225 Difference]: With dead ends: 55 [2021-10-16 03:11:11,537 INFO L226 Difference]: Without dead ends: 34 [2021-10-16 03:11:11,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:11,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-16 03:11:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2021-10-16 03:11:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-16 03:11:11,547 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 9 [2021-10-16 03:11:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:11,576 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-16 03:11:11,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-10-16 03:11:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-16 03:11:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:11:11,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:11,582 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:11,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:11:11,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:11,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:11,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1125304774, now seen corresponding path program 1 times [2021-10-16 03:11:11,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:11:11,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862101224] [2021-10-16 03:11:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:11,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:11:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:11,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:11:11,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862101224] [2021-10-16 03:11:11,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862101224] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:11,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:11,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:11:11,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590140443] [2021-10-16 03:11:11,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:11:11,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:11:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:11:11,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:11:11,671 INFO L87 Difference]: Start difference. First operand 27 states and 31 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) [2021-10-16 03:11:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:11,734 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2021-10-16 03:11:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:11:11,735 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 9 [2021-10-16 03:11:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:11,736 INFO L225 Difference]: With dead ends: 48 [2021-10-16 03:11:11,736 INFO L226 Difference]: Without dead ends: 46 [2021-10-16 03:11:11,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:11:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-16 03:11:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 29. [2021-10-16 03:11:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-16 03:11:11,751 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2021-10-16 03:11:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:11,751 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-16 03:11:11,751 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) [2021-10-16 03:11:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-10-16 03:11:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:11:11,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:11,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:11,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:11:11,753 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:11,755 INFO L82 PathProgramCache]: Analyzing trace with hash -461793925, now seen corresponding path program 1 times [2021-10-16 03:11:11,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:11:11,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485831773] [2021-10-16 03:11:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:11,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:11:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:11,808 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:11:11,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485831773] [2021-10-16 03:11:11,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485831773] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:11,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:11,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:11:11,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060926100] [2021-10-16 03:11:11,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:11:11,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:11:11,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:11:11,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:11,812 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-16 03:11:11,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:11,844 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2021-10-16 03:11:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:11:11,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) Word has length 10 [2021-10-16 03:11:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:11,846 INFO L225 Difference]: With dead ends: 51 [2021-10-16 03:11:11,846 INFO L226 Difference]: Without dead ends: 30 [2021-10-16 03:11:11,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-16 03:11:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2021-10-16 03:11:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-16 03:11:11,856 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2021-10-16 03:11:11,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:11,856 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-16 03:11:11,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-16 03:11:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-16 03:11:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 03:11:11,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:11,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:11,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:11:11,858 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:11,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:11,859 INFO L82 PathProgramCache]: Analyzing trace with hash 67089498, now seen corresponding path program 1 times [2021-10-16 03:11:11,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:11:11,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474508328] [2021-10-16 03:11:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:11,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:11:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:13,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:11:13,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474508328] [2021-10-16 03:11:13,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474508328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:13,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:13,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-16 03:11:13,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260654967] [2021-10-16 03:11:13,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:11:13,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:11:13,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:11:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:11:13,641 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2021-10-16 03:11:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:14,072 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2021-10-16 03:11:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:11:14,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) Word has length 15 [2021-10-16 03:11:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:14,074 INFO L225 Difference]: With dead ends: 42 [2021-10-16 03:11:14,074 INFO L226 Difference]: Without dead ends: 26 [2021-10-16 03:11:14,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 440.7ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:11:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-16 03:11:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-10-16 03:11:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-16 03:11:14,079 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 15 [2021-10-16 03:11:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:14,079 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-16 03:11:14,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2021-10-16 03:11:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-10-16 03:11:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 03:11:14,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:14,080 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:14,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 03:11:14,081 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:14,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1399323306, now seen corresponding path program 1 times [2021-10-16 03:11:14,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:11:14,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760816434] [2021-10-16 03:11:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:14,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:11:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:14,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:11:14,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760816434] [2021-10-16 03:11:14,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760816434] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:14,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:14,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 03:11:14,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595767554] [2021-10-16 03:11:14,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:11:14,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:11:14,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:11:14,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:11:14,174 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:14,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:14,239 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-16 03:11:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:11:14,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-10-16 03:11:14,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:14,241 INFO L225 Difference]: With dead ends: 39 [2021-10-16 03:11:14,241 INFO L226 Difference]: Without dead ends: 37 [2021-10-16 03:11:14,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 36.6ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:11:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-16 03:11:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 23. [2021-10-16 03:11:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-16 03:11:14,258 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2021-10-16 03:11:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:14,258 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-16 03:11:14,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:14,259 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-16 03:11:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 03:11:14,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:14,260 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:14,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 03:11:14,261 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:14,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1507348966, now seen corresponding path program 1 times [2021-10-16 03:11:14,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:11:14,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158836195] [2021-10-16 03:11:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:14,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:11:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:14,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:11:14,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158836195] [2021-10-16 03:11:14,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158836195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:11:14,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11344335] [2021-10-16 03:11:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:14,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:11:14,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:11:14,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:11:14,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:11:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:14,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:11:14,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:11:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:14,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:11:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:14,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11344335] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:11:14,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [495357395] [2021-10-16 03:11:14,928 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-10-16 03:11:14,928 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:11:14,933 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:11:14,938 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:11:14,939 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:11:14,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:11:14,983 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:11:14,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:11:14,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-16 03:11:14,986 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:11:14,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:11:14,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-16 03:11:14,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-16 03:11:15,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:11:15,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:11:15,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:11:15,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:11:15,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:11:15,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:11:15,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-10-16 03:11:15,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:11:15,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-16 03:11:15,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:11:15,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-16 03:11:15,043 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:11:15,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:11:15,055 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:11:15,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:11:15,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-16 03:11:15,062 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:11:15,063 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:161, output treesize:166 [2021-10-16 03:11:15,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-16 03:11:15,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:11:15,292 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_34| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:11:15,295 INFO L168 Benchmark]: Toolchain (without parser) took 5488.14 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 60.5 MB in the beginning and 37.6 MB in the end (delta: 22.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:11:15,295 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory was 76.9 MB in the beginning and 76.9 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:11:15,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.40 ms. Allocated memory is still 102.8 MB. Free memory was 60.3 MB in the beginning and 75.7 MB in the end (delta: -15.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:11:15,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.92 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 73.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:11:15,297 INFO L168 Benchmark]: Boogie Preprocessor took 66.86 ms. Allocated memory is still 102.8 MB. Free memory was 73.7 MB in the beginning and 72.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:11:15,297 INFO L168 Benchmark]: RCFGBuilder took 511.01 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 58.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:11:15,298 INFO L168 Benchmark]: TraceAbstraction took 4417.03 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 58.1 MB in the beginning and 37.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 64.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:11:15,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory was 76.9 MB in the beginning and 76.9 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 435.40 ms. Allocated memory is still 102.8 MB. Free memory was 60.3 MB in the beginning and 75.7 MB in the end (delta: -15.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.92 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 73.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.86 ms. Allocated memory is still 102.8 MB. Free memory was 73.7 MB in the beginning and 72.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 511.01 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 58.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4417.03 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 58.1 MB in the beginning and 37.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 64.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_34| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_34|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:11:15,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 03:11:17,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:11:17,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:11:17,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:11:17,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:11:17,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:11:17,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:11:17,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:11:17,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:11:17,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:11:17,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:11:17,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:11:17,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:11:17,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:11:17,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:11:17,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:11:17,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:11:17,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:11:17,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:11:17,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:11:17,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:11:17,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:11:17,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:11:17,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:11:17,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:11:17,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:11:17,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:11:17,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:11:17,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:11:17,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:11:17,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:11:17,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:11:17,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:11:17,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:11:17,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:11:17,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:11:17,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:11:17,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:11:17,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:11:17,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:11:17,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:11:17,933 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:11:17,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:11:17,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:11:17,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:11:17,960 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:11:17,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:11:17,961 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:11:17,961 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:11:17,961 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:11:17,961 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:11:17,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:11:17,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:11:17,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:11:17,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:11:17,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:11:17,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:11:17,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:11:17,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:11:17,964 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:11:17,964 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:11:17,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:11:17,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:11:17,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:11:17,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:11:17,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:11:17,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:11:17,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:11:17,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:11:17,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:11:17,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:11:17,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:11:17,966 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:11:17,966 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:11:17,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:11:17,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:11:17,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:11:17,967 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_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b909ccf6f1c4cf06610031e778229605609d3376 [2021-10-16 03:11:18,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:11:18,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:11:18,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:11:18,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:11:18,358 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:11:18,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2021-10-16 03:11:18,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data/4b1f17ac0/aeac18d725f74d299b757e29007de33d/FLAG2cd9dc2ed [2021-10-16 03:11:18,950 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:11:18,950 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2021-10-16 03:11:18,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data/4b1f17ac0/aeac18d725f74d299b757e29007de33d/FLAG2cd9dc2ed [2021-10-16 03:11:19,327 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/data/4b1f17ac0/aeac18d725f74d299b757e29007de33d [2021-10-16 03:11:19,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:11:19,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:11:19,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:11:19,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:11:19,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:11:19,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc7526e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19, skipping insertion in model container [2021-10-16 03:11:19,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:11:19,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:11:19,578 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1126,1139] [2021-10-16 03:11:19,610 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1880,1893] [2021-10-16 03:11:19,614 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2401,2414] [2021-10-16 03:11:19,619 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3193,3206] [2021-10-16 03:11:19,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:11:19,647 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:11:19,664 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1126,1139] [2021-10-16 03:11:19,668 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1880,1893] [2021-10-16 03:11:19,671 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2401,2414] [2021-10-16 03:11:19,675 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_cfe206c3-eae4-4826-ac05-c396bdda9171/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3193,3206] [2021-10-16 03:11:19,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:11:19,692 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:11:19,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19 WrapperNode [2021-10-16 03:11:19,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:11:19,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:11:19,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:11:19,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:11:19,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:11:19,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:11:19,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:11:19,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:11:19,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:11:19,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:11:19,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:11:19,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:11:19,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (1/1) ... [2021-10-16 03:11:19,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:11:19,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:11:19,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:11:19,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:11:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:11:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:11:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:11:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:11:19,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:11:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:11:20,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:11:20,302 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 03:11:20,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:11:20 BoogieIcfgContainer [2021-10-16 03:11:20,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:11:20,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:11:20,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:11:20,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:11:20,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:11:19" (1/3) ... [2021-10-16 03:11:20,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a50fda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:11:20, skipping insertion in model container [2021-10-16 03:11:20,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:11:19" (2/3) ... [2021-10-16 03:11:20,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a50fda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:11:20, skipping insertion in model container [2021-10-16 03:11:20,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:11:20" (3/3) ... [2021-10-16 03:11:20,330 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2021-10-16 03:11:20,339 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:11:20,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-16 03:11:20,385 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:11:20,392 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:11:20,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 03:11:20,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 32 states have (on average 1.65625) internal successors, (53), 36 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:11:20,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:20,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:20,413 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash -549247241, now seen corresponding path program 1 times [2021-10-16 03:11:20,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:11:20,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214768601] [2021-10-16 03:11:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:20,432 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:11:20,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:11:20,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:11:20,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:11:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:20,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:11:20,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:11:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:20,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:11:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:20,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:11:20,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214768601] [2021-10-16 03:11:20,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214768601] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:20,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:20,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:11:20,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415340293] [2021-10-16 03:11:20,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:11:20,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:11:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:11:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:20,748 INFO L87 Difference]: Start difference. First operand has 37 states, 32 states have (on average 1.65625) internal successors, (53), 36 states have internal predecessors, (53), 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 3.0) internal successors, (9), 3 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) [2021-10-16 03:11:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:20,777 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-10-16 03:11:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:11:20,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 9 [2021-10-16 03:11:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:20,787 INFO L225 Difference]: With dead ends: 52 [2021-10-16 03:11:20,787 INFO L226 Difference]: Without dead ends: 30 [2021-10-16 03:11:20,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-16 03:11:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-10-16 03:11:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.32) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-10-16 03:11:20,833 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 9 [2021-10-16 03:11:20,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:20,834 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-10-16 03:11:20,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-10-16 03:11:20,834 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-10-16 03:11:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:11:20,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:20,837 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:20,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 03:11:21,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:11:21,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:21,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2084862863, now seen corresponding path program 1 times [2021-10-16 03:11:21,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:11:21,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179058677] [2021-10-16 03:11:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:21,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:11:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:11:21,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:11:21,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:11:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:21,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:11:21,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:11:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:21,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:11:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:21,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:11:21,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179058677] [2021-10-16 03:11:21,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179058677] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:21,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:21,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:11:21,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65798502] [2021-10-16 03:11:21,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:11:21,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:11:21,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:11:21,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:21,242 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-16 03:11:21,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:21,293 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-10-16 03:11:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:11:21,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) Word has length 10 [2021-10-16 03:11:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:21,297 INFO L225 Difference]: With dead ends: 56 [2021-10-16 03:11:21,298 INFO L226 Difference]: Without dead ends: 35 [2021-10-16 03:11:21,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-16 03:11:21,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2021-10-16 03:11:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-16 03:11:21,311 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2021-10-16 03:11:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:21,311 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-16 03:11:21,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-16 03:11:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-16 03:11:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:11:21,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:21,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:21,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:11:21,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:11:21,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:21,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:21,537 INFO L82 PathProgramCache]: Analyzing trace with hash 2140661612, now seen corresponding path program 1 times [2021-10-16 03:11:21,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:11:21,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466209448] [2021-10-16 03:11:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:21,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:11:21,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:11:21,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:11:21,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:11:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:21,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:11:21,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:11:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:21,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:11:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:21,698 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:11:21,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466209448] [2021-10-16 03:11:21,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466209448] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:21,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:21,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:11:21,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579554624] [2021-10-16 03:11:21,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:11:21,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:11:21,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:11:21,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:11:21,702 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2021-10-16 03:11:21,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:21,746 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2021-10-16 03:11:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:11:21,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 10 [2021-10-16 03:11:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:21,748 INFO L225 Difference]: With dead ends: 49 [2021-10-16 03:11:21,748 INFO L226 Difference]: Without dead ends: 47 [2021-10-16 03:11:21,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:11:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-16 03:11:21,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2021-10-16 03:11:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-10-16 03:11:21,756 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 10 [2021-10-16 03:11:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:21,756 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-16 03:11:21,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2021-10-16 03:11:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-10-16 03:11:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:11:21,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:21,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:21,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:11:21,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:11:21,969 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1998916233, now seen corresponding path program 1 times [2021-10-16 03:11:21,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:11:21,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896348873] [2021-10-16 03:11:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:21,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:11:21,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:11:21,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:11:21,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:11:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:22,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:11:22,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:11:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:22,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:11:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:22,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:11:22,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896348873] [2021-10-16 03:11:22,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896348873] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:22,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:22,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:11:22,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514004840] [2021-10-16 03:11:22,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:11:22,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:11:22,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:11:22,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:22,103 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-16 03:11:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:11:22,164 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-16 03:11:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:11:22,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Word has length 11 [2021-10-16 03:11:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:11:22,168 INFO L225 Difference]: With dead ends: 52 [2021-10-16 03:11:22,168 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 03:11:22,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:11:22,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 03:11:22,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2021-10-16 03:11:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:22,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-16 03:11:22,185 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2021-10-16 03:11:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:11:22,185 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-16 03:11:22,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2021-10-16 03:11:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-10-16 03:11:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 03:11:22,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:11:22,187 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:11:22,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:11:22,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:11:22,403 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:11:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:11:22,404 INFO L82 PathProgramCache]: Analyzing trace with hash 588855308, now seen corresponding path program 1 times [2021-10-16 03:11:22,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:11:22,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605038873] [2021-10-16 03:11:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:11:22,407 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:11:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:11:22,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:11:22,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:11:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:11:22,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 03:11:22,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:11:23,360 INFO L354 Elim1Store]: treesize reduction 78, result has 8.2 percent of original size [2021-10-16 03:11:23,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 45 [2021-10-16 03:11:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:23,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:11:34,949 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-10-16 03:11:34,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 26 [2021-10-16 03:11:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:11:35,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:11:35,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605038873] [2021-10-16 03:11:35,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605038873] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:11:35,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:11:35,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 6] imperfect sequences [] total 14 [2021-10-16 03:11:35,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686412098] [2021-10-16 03:11:35,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 03:11:35,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:11:35,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 03:11:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=132, Unknown=3, NotChecked=0, Total=182 [2021-10-16 03:11:35,347 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:11:43,584 WARN L207 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 38 [2021-10-16 03:11:49,690 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 33 [2021-10-16 03:11:57,989 WARN L207 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 35 [2021-10-16 03:12:06,109 WARN L207 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 37 [2021-10-16 03:12:24,392 WARN L207 SmtUtils]: Spent 16.16 s on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-10-16 03:12:24,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:24,452 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-10-16 03:12:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 03:12:24,453 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 03:12:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:24,454 INFO L225 Difference]: With dead ends: 41 [2021-10-16 03:12:24,454 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 03:12:24,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 58080.1ms TimeCoverageRelationStatistics Valid=119, Invalid=298, Unknown=3, NotChecked=0, Total=420 [2021-10-16 03:12:24,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 03:12:24,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-10-16 03:12:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-16 03:12:24,460 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-10-16 03:12:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:24,460 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-16 03:12:24,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-16 03:12:24,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 03:12:24,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:24,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:24,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 03:12:24,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:12:24,668 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 03:12:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:24,668 INFO L82 PathProgramCache]: Analyzing trace with hash 394194232, now seen corresponding path program 1 times [2021-10-16 03:12:24,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:12:24,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609861035] [2021-10-16 03:12:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:24,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:12:24,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:12:24,671 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:12:24,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:12:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:24,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:12:24,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:24,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:24,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:12:24,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609861035] [2021-10-16 03:12:24,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609861035] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:24,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:24,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:12:24,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060090647] [2021-10-16 03:12:24,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:12:24,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:12:24,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:12:24,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:12:24,896 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:24,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:24,926 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-16 03:12:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:12:24,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 17 [2021-10-16 03:12:24,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:24,928 INFO L225 Difference]: With dead ends: 24 [2021-10-16 03:12:24,928 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:12:24,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:12:24,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:12:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:12:24,929 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) [2021-10-16 03:12:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:12:24,929 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-16 03:12:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:24,930 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:12:24,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:12:24,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:12:24,933 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:12:24,934 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:12:24,934 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:12:24,935 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:12:24,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:12:25,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:12:25,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:12:25,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:25,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:25,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:25,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:25,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:25,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:25,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:25,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:25,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:41,458 WARN L207 SmtUtils]: Spent 16.22 s on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-10-16 03:12:57,796 WARN L207 SmtUtils]: Spent 16.16 s on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2021-10-16 03:12:57,799 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 93) no Hoare annotation was computed. [2021-10-16 03:12:57,799 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2021-10-16 03:12:57,799 INFO L853 garLoopResultBuilder]: At program point L151(lines 29 152) the Hoare annotation is: false [2021-10-16 03:12:57,799 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:12:57,800 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:12:57,800 INFO L853 garLoopResultBuilder]: At program point L119(lines 98 128) the Hoare annotation is: (let ((.cse3 (bvult ULTIMATE.start_main_~main__index1~0 ULTIMATE.start_main_~main__index2~0)) (.cse5 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32)))) (.cse6 (= |ULTIMATE.start_main_~#main__array~0.offset| (_ bv0 32)))) (or (let ((.cse1 (bvmul ULTIMATE.start_main_~main__index2~0 (_ bv4 32))) (.cse0 (select |#memory_int| |ULTIMATE.start_main_~#main__array~0.base|)) (.cse2 (bvmul ULTIMATE.start_main_~main__index1~0 (_ bv4 32))) (.cse4 (bvadd ULTIMATE.start_main_~main__index2~0 (_ bv1 32)))) (and (or (not (bvult ULTIMATE.start_main_~main__index2~0 ULTIMATE.start_main_~main__index1~0)) (= (select .cse0 (bvadd .cse1 |ULTIMATE.start_main_~#main__array~0.offset|)) (select .cse0 (bvadd .cse2 |ULTIMATE.start_main_~#main__array~0.offset|)))) (not .cse3) (bvult .cse4 (_ bv100000 32)) .cse5 (= (select .cse0 (bvadd (_ bv4 32) .cse1 |ULTIMATE.start_main_~#main__array~0.offset|)) (select .cse0 (bvadd (_ bv4294967292 32) .cse2 |ULTIMATE.start_main_~#main__array~0.offset|))) .cse6 (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__index1~0) .cse4))) (and (bvult ULTIMATE.start_main_~main__index2~0 (_ bv100000 32)) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32)) .cse3 .cse5 .cse6))) [2021-10-16 03:12:57,800 INFO L860 garLoopResultBuilder]: At program point L194(lines 14 196) the Hoare annotation is: true [2021-10-16 03:12:57,800 INFO L857 garLoopResultBuilder]: For program point L62(lines 62 88) no Hoare annotation was computed. [2021-10-16 03:12:57,800 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 152) no Hoare annotation was computed. [2021-10-16 03:12:57,801 INFO L853 garLoopResultBuilder]: At program point L87(lines 62 88) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~main__index2~0 (_ bv1 32)))) (and (bvult .cse0 (_ bv100000 32)) (bvult ULTIMATE.start_main_~main__index1~0 ULTIMATE.start_main_~main__index2~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32))) (let ((.cse1 (select |#memory_int| |ULTIMATE.start_main_~#main__array~0.base|))) (= (select .cse1 (bvadd (_ bv4 32) (bvmul ULTIMATE.start_main_~main__index2~0 (_ bv4 32)) |ULTIMATE.start_main_~#main__array~0.offset|)) (select .cse1 (bvadd (_ bv4294967292 32) (bvmul ULTIMATE.start_main_~main__index1~0 (_ bv4 32)) |ULTIMATE.start_main_~#main__array~0.offset|)))) (= (_ bv1 32) ULTIMATE.start_main_~main____CPAchecker_TMP_0~1) (= |ULTIMATE.start_main_~#main__array~0.offset| (_ bv0 32)) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__index1~0) .cse0))) [2021-10-16 03:12:57,801 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 167) no Hoare annotation was computed. [2021-10-16 03:12:57,801 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 195) no Hoare annotation was computed. [2021-10-16 03:12:57,801 INFO L853 garLoopResultBuilder]: At program point L79(lines 46 139) the Hoare annotation is: (and (bvult ULTIMATE.start_main_~main__index2~0 (_ bv100000 32)) (bvult ULTIMATE.start_main_~main__index1~0 ULTIMATE.start_main_~main__index2~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32))) (= |ULTIMATE.start_main_~#main__array~0.offset| (_ bv0 32))) [2021-10-16 03:12:57,802 INFO L857 garLoopResultBuilder]: For program point L71(lines 71 80) no Hoare annotation was computed. [2021-10-16 03:12:57,802 INFO L853 garLoopResultBuilder]: At program point L146(lines 31 147) the Hoare annotation is: (and (bvult ULTIMATE.start_main_~main__index2~0 (_ bv100000 32)) (= ULTIMATE.start_main_~main__loop_entered~0 (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_main_~main____CPAchecker_TMP_0~0) (bvult ULTIMATE.start_main_~main__index1~0 ULTIMATE.start_main_~main__index2~0) (= |ULTIMATE.start_main_~#main__array~0.offset| (_ bv0 32))) [2021-10-16 03:12:57,802 INFO L857 garLoopResultBuilder]: For program point L97(lines 97 132) no Hoare annotation was computed. [2021-10-16 03:12:57,802 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 147) no Hoare annotation was computed. [2021-10-16 03:12:57,803 INFO L853 garLoopResultBuilder]: At program point L172(lines 26 185) the Hoare annotation is: (let ((.cse1 (bvmul ULTIMATE.start_main_~main__index2~0 (_ bv4 32))) (.cse0 (select |#memory_int| |ULTIMATE.start_main_~#main__array~0.base|)) (.cse2 (bvmul ULTIMATE.start_main_~main__index1~0 (_ bv4 32))) (.cse3 (bvadd ULTIMATE.start_main_~main__index2~0 (_ bv1 32)))) (and (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32)) (or (not (bvult ULTIMATE.start_main_~main__index2~0 ULTIMATE.start_main_~main__index1~0)) (= (select .cse0 (bvadd .cse1 |ULTIMATE.start_main_~#main__array~0.offset|)) (select .cse0 (bvadd .cse2 |ULTIMATE.start_main_~#main__array~0.offset|)))) (not (bvult ULTIMATE.start_main_~main__index1~0 ULTIMATE.start_main_~main__index2~0)) (bvult .cse3 (_ bv100000 32)) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32))) (= (select .cse0 (bvadd (_ bv4 32) .cse1 |ULTIMATE.start_main_~#main__array~0.offset|)) (select .cse0 (bvadd (_ bv4294967292 32) .cse2 |ULTIMATE.start_main_~#main__array~0.offset|))) (= |ULTIMATE.start_main_~#main__array~0.offset| (_ bv0 32)) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__index1~0) .cse3))) [2021-10-16 03:12:57,803 INFO L857 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2021-10-16 03:12:57,803 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 139) no Hoare annotation was computed. [2021-10-16 03:12:57,803 INFO L860 garLoopResultBuilder]: At program point L131(lines 97 132) the Hoare annotation is: true [2021-10-16 03:12:57,803 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:12:57,804 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 184) no Hoare annotation was computed. [2021-10-16 03:12:57,804 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 133) no Hoare annotation was computed. [2021-10-16 03:12:57,804 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 190) no Hoare annotation was computed. [2021-10-16 03:12:57,804 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-10-16 03:12:57,804 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 120) no Hoare annotation was computed. [2021-10-16 03:12:57,805 INFO L857 garLoopResultBuilder]: For program point L165(lines 165 173) no Hoare annotation was computed. [2021-10-16 03:12:57,805 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:12:57,805 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 138) no Hoare annotation was computed. [2021-10-16 03:12:57,805 INFO L857 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-10-16 03:12:57,805 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 179) no Hoare annotation was computed. [2021-10-16 03:12:57,805 INFO L853 garLoopResultBuilder]: At program point L92(lines 60 93) the Hoare annotation is: false [2021-10-16 03:12:57,806 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 185) no Hoare annotation was computed. [2021-10-16 03:12:57,806 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 109) no Hoare annotation was computed. [2021-10-16 03:12:57,806 INFO L857 garLoopResultBuilder]: For program point L109(line 109) no Hoare annotation was computed. [2021-10-16 03:12:57,806 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-10-16 03:12:57,811 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:12:57,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:12:57 BoogieIcfgContainer [2021-10-16 03:12:57,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:12:57,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:12:57,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:12:57,833 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:12:57,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:11:20" (3/4) ... [2021-10-16 03:12:57,839 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:12:57,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-16 03:12:57,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 03:12:57,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:12:57,853 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:12:57,904 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:12:57,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:12:57,905 INFO L168 Benchmark]: Toolchain (without parser) took 98568.76 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 36.2 MB in the beginning and 33.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:57,906 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:12:57,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.45 ms. Allocated memory is still 58.7 MB. Free memory was 35.9 MB in the beginning and 39.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:57,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.16 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 38.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:57,907 INFO L168 Benchmark]: Boogie Preprocessor took 40.69 ms. Allocated memory is still 58.7 MB. Free memory was 38.1 MB in the beginning and 36.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:12:57,908 INFO L168 Benchmark]: RCFGBuilder took 527.85 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 37.5 MB in the end (delta: -893.2 kB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:57,908 INFO L168 Benchmark]: TraceAbstraction took 97521.73 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 37.0 MB in the beginning and 38.0 MB in the end (delta: -964.9 kB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:57,909 INFO L168 Benchmark]: Witness Printer took 71.52 ms. Allocated memory is still 81.8 MB. Free memory was 38.0 MB in the beginning and 33.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:57,911 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 58.7 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.45 ms. Allocated memory is still 58.7 MB. Free memory was 35.9 MB in the beginning and 39.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.16 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 38.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.69 ms. Allocated memory is still 58.7 MB. Free memory was 38.1 MB in the beginning and 36.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 527.85 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 37.5 MB in the end (delta: -893.2 kB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 97521.73 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 37.0 MB in the beginning and 38.0 MB in the end (delta: -964.9 kB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * Witness Printer took 71.52 ms. Allocated memory is still 81.8 MB. Free memory was 38.0 MB in the beginning and 33.2 MB in the end (delta: 4.8 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: 42]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 109]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 167]: 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, 37 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 97427.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 14.7ms, AutomataDifference: 49379.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 32652.0ms, InitialAbstractionConstructionTime: 10.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 155 SDtfs, 181 SDslu, 181 SDs, 0 SdLazy, 136 SolverSat, 21 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2446.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 58156.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 67.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 21 NumberOfFragments, 240 HoareAnnotationTreeSize, 9 FomulaSimplifications, 257 FormulaSimplificationTreeSizeReduction, 87.9ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 32558.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 73.6ms SsaConstructionTime, 139.6ms SatisfiabilityAnalysisTime, 13430.4ms InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 640 SizeOfPredicates, 12 NumberOfNonLiveVariables, 289 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: (((((((!~bvult32(main__index2, main__index1) || unknown-#memory_int-unknown[main__array][~bvadd64(~bvmul32(main__index2, 4bv32), main__array)] == unknown-#memory_int-unknown[main__array][~bvadd64(~bvmul32(main__index1, 4bv32), main__array)]) && !~bvult32(main__index1, main__index2)) && ~bvult32(~bvadd64(main__index2, 1bv32), 100000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && unknown-#memory_int-unknown[main__array][~bvadd64(4bv32, ~bvmul32(main__index2, 4bv32), main__array)] == unknown-#memory_int-unknown[main__array][~bvadd64(4294967292bv32, ~bvmul32(main__index1, 4bv32), main__array)]) && main__array == 0bv32) && ~bvult32(~bvadd64(4294967295bv32, main__index1), ~bvadd64(main__index2, 1bv32))) || ((((~bvult32(main__index2, 100000bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvult32(main__index1, main__index2)) && !(__VERIFIER_assert__cond == 0bv32)) && main__array == 0bv32) - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((~bvult32(main__index2, 100000bv32) && main__loop_entered == 0bv32) && 1bv32 == main____CPAchecker_TMP_0) && ~bvult32(main__index1, main__index2)) && main__array == 0bv32 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((~bvult32(main__index2, 100000bv32) && ~bvult32(main__index1, main__index2)) && !(__VERIFIER_assert__cond == 0bv32)) && main__array == 0bv32 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: (((((~bvult32(~bvadd64(main__index2, 1bv32), 100000bv32) && ~bvult32(main__index1, main__index2)) && !(__VERIFIER_assert__cond == 0bv32)) && unknown-#memory_int-unknown[main__array][~bvadd64(4bv32, ~bvmul32(main__index2, 4bv32), main__array)] == unknown-#memory_int-unknown[main__array][~bvadd64(4294967292bv32, ~bvmul32(main__index1, 4bv32), main__array)]) && 1bv32 == main____CPAchecker_TMP_0) && main__array == 0bv32) && ~bvult32(~bvadd64(4294967295bv32, main__index1), ~bvadd64(main__index2, 1bv32)) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((((__VERIFIER_assert__cond == 1bv32 && (!~bvult32(main__index2, main__index1) || unknown-#memory_int-unknown[main__array][~bvadd64(~bvmul32(main__index2, 4bv32), main__array)] == unknown-#memory_int-unknown[main__array][~bvadd64(~bvmul32(main__index1, 4bv32), main__array)])) && !~bvult32(main__index1, main__index2)) && ~bvult32(~bvadd64(main__index2, 1bv32), 100000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && unknown-#memory_int-unknown[main__array][~bvadd64(4bv32, ~bvmul32(main__index2, 4bv32), main__array)] == unknown-#memory_int-unknown[main__array][~bvadd64(4294967292bv32, ~bvmul32(main__index1, 4bv32), main__array)]) && main__array == 0bv32) && ~bvult32(~bvadd64(4294967295bv32, main__index1), ~bvadd64(main__index2, 1bv32)) RESULT: Ultimate proved your program to be correct! [2021-10-16 03:12:57,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfe206c3-eae4-4826-ac05-c396bdda9171/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...