./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8242c02a65c511b095f42030318aeef939254d04 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8242c02a65c511b095f42030318aeef939254d04 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:07:15,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:07:15,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:07:15,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:07:15,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:07:15,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:07:15,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:07:15,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:07:15,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:07:15,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:07:15,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:07:15,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:07:15,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:07:15,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:07:15,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:07:15,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:07:15,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:07:15,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:07:15,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:07:15,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:07:15,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:07:15,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:07:15,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:07:15,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:07:15,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:07:15,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:07:15,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:07:15,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:07:15,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:07:15,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:07:15,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:07:15,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:07:15,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:07:15,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:07:15,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:07:15,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:07:15,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:07:15,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:07:15,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:07:15,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:07:15,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:07:15,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:07:15,539 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:07:15,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:07:15,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:07:15,547 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:07:15,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:07:15,548 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:07:15,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:07:15,548 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:07:15,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:07:15,549 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:07:15,550 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:07:15,551 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:07:15,551 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:07:15,552 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:07:15,552 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:07:15,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:07:15,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:07:15,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:07:15,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:07:15,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:07:15,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:07:15,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:07:15,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:07:15,556 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:07:15,556 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:07:15,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:07:15,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:07:15,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:07:15,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:07:15,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:07:15,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:07:15,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:07:15,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:07:15,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:07:15,561 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:07:15,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:07:15,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:07:15,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:07:15,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:07:15,563 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8242c02a65c511b095f42030318aeef939254d04 [2021-10-13 07:07:15,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:07:15,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:07:15,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:07:15,946 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:07:15,947 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:07:15,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2021-10-13 07:07:16,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data/0880ff8c5/87c1ff64904949818dc18e2dc95f9903/FLAGadf1db9ca [2021-10-13 07:07:16,589 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:07:16,590 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2021-10-13 07:07:16,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data/0880ff8c5/87c1ff64904949818dc18e2dc95f9903/FLAGadf1db9ca [2021-10-13 07:07:16,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data/0880ff8c5/87c1ff64904949818dc18e2dc95f9903 [2021-10-13 07:07:16,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:07:16,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:07:16,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:07:16,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:07:16,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:07:16,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:16" (1/1) ... [2021-10-13 07:07:16,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36323d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:16, skipping insertion in model container [2021-10-13 07:07:16,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:16" (1/1) ... [2021-10-13 07:07:16,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:07:16,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:07:17,206 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1126,1139] [2021-10-13 07:07:17,218 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1880,1893] [2021-10-13 07:07:17,224 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2415,2428] [2021-10-13 07:07:17,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:07:17,238 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:07:17,257 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1126,1139] [2021-10-13 07:07:17,263 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1880,1893] [2021-10-13 07:07:17,267 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2415,2428] [2021-10-13 07:07:17,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:07:17,287 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:07:17,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17 WrapperNode [2021-10-13 07:07:17,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:07:17,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:07:17,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:07:17,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:07:17,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:07:17,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:07:17,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:07:17,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:07:17,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:07:17,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:07:17,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:07:17,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:07:17,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (1/1) ... [2021-10-13 07:07:17,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:07:17,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:17,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:07:17,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:07:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:07:17,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:07:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:07:17,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:07:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:07:17,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:07:17,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:07:17,884 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:07:17,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:17 BoogieIcfgContainer [2021-10-13 07:07:17,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:07:17,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:07:17,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:07:17,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:07:17,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:07:16" (1/3) ... [2021-10-13 07:07:17,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f764d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:17, skipping insertion in model container [2021-10-13 07:07:17,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:17" (2/3) ... [2021-10-13 07:07:17,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f764d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:17, skipping insertion in model container [2021-10-13 07:07:17,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:17" (3/3) ... [2021-10-13 07:07:17,907 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2021-10-13 07:07:17,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:07:17,915 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:07:17,997 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:07:18,005 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:07:18,005 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:07:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 25 states have (on average 1.68) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:07:18,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:18,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:18,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:18,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1546650789, now seen corresponding path program 1 times [2021-10-13 07:07:18,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:18,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569053712] [2021-10-13 07:07:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:18,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:18,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:18,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569053712] [2021-10-13 07:07:18,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569053712] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:18,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:18,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:07:18,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091518041] [2021-10-13 07:07:18,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:07:18,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:07:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:18,482 INFO L87 Difference]: Start difference. First operand has 29 states, 25 states have (on average 1.68) internal successors, (42), 28 states have internal predecessors, (42), 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) [2021-10-13 07:07:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:18,540 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2021-10-13 07:07:18,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:07:18,544 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 [2021-10-13 07:07:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:18,572 INFO L225 Difference]: With dead ends: 42 [2021-10-13 07:07:18,572 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 07:07:18,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 07:07:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-10-13 07:07:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 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) [2021-10-13 07:07:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-10-13 07:07:18,629 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 8 [2021-10-13 07:07:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:18,630 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-10-13 07:07:18,630 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) [2021-10-13 07:07:18,630 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-10-13 07:07:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:07:18,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:18,631 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:18,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:07:18,633 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:18,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1412593997, now seen corresponding path program 1 times [2021-10-13 07:07:18,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:18,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810747843] [2021-10-13 07:07:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:18,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:18,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:18,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810747843] [2021-10-13 07:07:18,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810747843] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:18,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:18,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:07:18,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338386730] [2021-10-13 07:07:18,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:07:18,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:07:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:18,747 INFO L87 Difference]: Start difference. First operand 26 states and 31 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) [2021-10-13 07:07:18,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:18,814 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-10-13 07:07:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:07:18,815 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 [2021-10-13 07:07:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:18,817 INFO L225 Difference]: With dead ends: 53 [2021-10-13 07:07:18,818 INFO L226 Difference]: Without dead ends: 33 [2021-10-13 07:07:18,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-13 07:07:18,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2021-10-13 07:07:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 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) [2021-10-13 07:07:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-13 07:07:18,832 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 9 [2021-10-13 07:07:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:18,833 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-13 07:07:18,833 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) [2021-10-13 07:07:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-13 07:07:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:07:18,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:18,839 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:18,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:07:18,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1344104488, now seen corresponding path program 1 times [2021-10-13 07:07:18,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:18,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81805324] [2021-10-13 07:07:18,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:18,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:18,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:18,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81805324] [2021-10-13 07:07:18,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81805324] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:18,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:18,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:07:18,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179599705] [2021-10-13 07:07:18,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:07:18,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:07:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:07:18,949 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:19,006 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-10-13 07:07:19,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:07:19,007 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 [2021-10-13 07:07:19,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:19,011 INFO L225 Difference]: With dead ends: 46 [2021-10-13 07:07:19,011 INFO L226 Difference]: Without dead ends: 44 [2021-10-13 07:07:19,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:07:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-13 07:07:19,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2021-10-13 07:07:19,025 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) [2021-10-13 07:07:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-13 07:07:19,029 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2021-10-13 07:07:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:19,029 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-13 07:07:19,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-13 07:07:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:07:19,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:19,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:19,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:07:19,032 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:19,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1220471443, now seen corresponding path program 1 times [2021-10-13 07:07:19,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:19,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390415847] [2021-10-13 07:07:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:19,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:19,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:19,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390415847] [2021-10-13 07:07:19,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390415847] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:19,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:19,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:07:19,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053876887] [2021-10-13 07:07:19,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:07:19,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:07:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:19,130 INFO L87 Difference]: Start difference. First operand 28 states and 32 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) [2021-10-13 07:07:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:19,187 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2021-10-13 07:07:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:07:19,188 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 [2021-10-13 07:07:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:19,191 INFO L225 Difference]: With dead ends: 49 [2021-10-13 07:07:19,196 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 07:07:19,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 07:07:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2021-10-13 07:07:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 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) [2021-10-13 07:07:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-13 07:07:19,202 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2021-10-13 07:07:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:19,202 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-13 07:07:19,202 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) [2021-10-13 07:07:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-13 07:07:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:07:19,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:19,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:19,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:07:19,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:19,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1299008504, now seen corresponding path program 1 times [2021-10-13 07:07:19,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:19,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983882628] [2021-10-13 07:07:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:19,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:21,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:21,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983882628] [2021-10-13 07:07:21,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983882628] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:21,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:21,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 07:07:21,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166128609] [2021-10-13 07:07:21,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:07:21,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:21,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:07:21,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:07:21,068 INFO L87 Difference]: Start difference. First operand 23 states and 26 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) [2021-10-13 07:07:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:21,491 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-10-13 07:07:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:07:21,494 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 [2021-10-13 07:07:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:21,495 INFO L225 Difference]: With dead ends: 39 [2021-10-13 07:07:21,495 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 07:07:21,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 577.0ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:07:21,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 07:07:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-13 07:07:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-13 07:07:21,504 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2021-10-13 07:07:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:21,504 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-13 07:07:21,505 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) [2021-10-13 07:07:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-13 07:07:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:07:21,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:21,506 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:21,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:07:21,507 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:21,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:21,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1999003900, now seen corresponding path program 1 times [2021-10-13 07:07:21,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:21,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246426675] [2021-10-13 07:07:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:21,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:21,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:21,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246426675] [2021-10-13 07:07:21,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246426675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:21,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:21,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:07:21,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468945624] [2021-10-13 07:07:21,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:07:21,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:21,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:07:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:07:21,606 INFO L87 Difference]: Start difference. First operand 24 states and 25 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) [2021-10-13 07:07:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:21,679 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-10-13 07:07:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:07:21,679 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 [2021-10-13 07:07:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:21,680 INFO L225 Difference]: With dead ends: 37 [2021-10-13 07:07:21,681 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 07:07:21,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:07:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 07:07:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22. [2021-10-13 07:07:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-13 07:07:21,698 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2021-10-13 07:07:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:21,700 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-13 07:07:21,701 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) [2021-10-13 07:07:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-13 07:07:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:07:21,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:21,703 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:21,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:07:21,708 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:21,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1488428289, now seen corresponding path program 1 times [2021-10-13 07:07:21,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:21,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133561047] [2021-10-13 07:07:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:21,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:21,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:21,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133561047] [2021-10-13 07:07:21,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133561047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:07:21,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451542888] [2021-10-13 07:07:21,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:21,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:21,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:21,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:07:21,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:07:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:22,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:07:22,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:22,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:22,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451542888] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:07:22,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [905464941] [2021-10-13 07:07:22,456 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-13 07:07:22,457 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:07:22,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:07:22,471 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:07:22,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:07:22,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:22,529 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:07:22,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:22,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-13 07:07:22,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:07:22,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:22,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:07:22,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-13 07:07:22,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:07:22,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:07:22,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:07:22,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:07:22,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:07:22,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:07:22,609 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 [2021-10-13 07:07:22,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:22,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-13 07:07:22,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:22,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-13 07:07:22,615 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:07:22,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:22,646 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:22,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:22,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-13 07:07:22,662 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:07:22,663 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:161, output treesize:166 [2021-10-13 07:07:22,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:22,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 07:07:22,881 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_28| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:07:22,885 INFO L168 Benchmark]: Toolchain (without parser) took 5942.35 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 63.5 MB in the beginning and 103.0 MB in the end (delta: -39.5 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:22,885 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 98.6 MB. Free memory was 70.7 MB in the beginning and 70.6 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:07:22,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.22 ms. Allocated memory is still 98.6 MB. Free memory was 63.4 MB in the beginning and 72.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:22,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.47 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 70.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:22,887 INFO L168 Benchmark]: Boogie Preprocessor took 29.57 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 69.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:07:22,888 INFO L168 Benchmark]: RCFGBuilder took 519.92 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 56.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:22,888 INFO L168 Benchmark]: TraceAbstraction took 4993.73 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 56.2 MB in the beginning and 103.0 MB in the end (delta: -46.8 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:07:22,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 98.6 MB. Free memory was 70.7 MB in the beginning and 70.6 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.22 ms. Allocated memory is still 98.6 MB. Free memory was 63.4 MB in the beginning and 72.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.47 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 70.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.57 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 69.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 519.92 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 56.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4993.73 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 56.2 MB in the beginning and 103.0 MB in the end (delta: -46.8 MB). Peak memory consumption was 50.4 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_28| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_28|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:07:22,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:07:25,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:07:25,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:07:25,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:07:25,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:07:25,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:07:25,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:07:25,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:07:25,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:07:25,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:07:25,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:07:25,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:07:25,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:07:25,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:07:25,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:07:25,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:07:25,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:07:25,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:07:25,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:07:25,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:07:25,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:07:25,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:07:25,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:07:25,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:07:25,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:07:25,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:07:25,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:07:25,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:07:25,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:07:25,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:07:25,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:07:25,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:07:25,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:07:25,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:07:25,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:07:25,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:07:25,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:07:25,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:07:25,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:07:25,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:07:25,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:07:25,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:07:25,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:07:25,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:07:25,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:07:25,954 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:07:25,954 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:07:25,954 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:07:25,955 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:07:25,955 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:07:25,955 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:07:25,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:07:25,957 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:07:25,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:07:25,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:07:25,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:07:25,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:07:25,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:07:25,958 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:07:25,959 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:07:25,959 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:07:25,959 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:07:25,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:07:25,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:07:25,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:07:25,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:07:25,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:07:25,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:07:25,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:07:25,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:07:25,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:07:25,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:07:25,963 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:07:25,963 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:07:25,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:07:25,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:07:25,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:07:25,964 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8242c02a65c511b095f42030318aeef939254d04 [2021-10-13 07:07:26,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:07:26,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:07:26,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:07:26,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:07:26,455 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:07:26,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2021-10-13 07:07:26,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data/4bad27b9e/184920b440ba444b902c2a04894b5a82/FLAGe5fa12ecd [2021-10-13 07:07:27,190 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:07:27,190 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2021-10-13 07:07:27,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data/4bad27b9e/184920b440ba444b902c2a04894b5a82/FLAGe5fa12ecd [2021-10-13 07:07:27,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/data/4bad27b9e/184920b440ba444b902c2a04894b5a82 [2021-10-13 07:07:27,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:07:27,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:07:27,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:07:27,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:07:27,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:07:27,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:27,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4aedc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27, skipping insertion in model container [2021-10-13 07:07:27,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:27,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:07:27,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:07:27,793 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1126,1139] [2021-10-13 07:07:27,804 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1880,1893] [2021-10-13 07:07:27,809 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2415,2428] [2021-10-13 07:07:27,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:07:27,825 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:07:27,857 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1126,1139] [2021-10-13 07:07:27,880 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1880,1893] [2021-10-13 07:07:27,888 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_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2415,2428] [2021-10-13 07:07:27,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:07:27,930 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:07:27,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27 WrapperNode [2021-10-13 07:07:27,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:07:27,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:07:27,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:07:27,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:07:27,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:27,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:28,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:07:28,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:07:28,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:07:28,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:07:28,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:28,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:28,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:28,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:28,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:28,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:28,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:28,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:07:28,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:07:28,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:07:28,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:07:28,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (1/1) ... [2021-10-13 07:07:28,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:07:28,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:28,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:07:28,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:07:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:07:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:07:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:07:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:07:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:07:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:07:28,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:07:28,634 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:07:28,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:28 BoogieIcfgContainer [2021-10-13 07:07:28,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:07:28,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:07:28,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:07:28,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:07:28,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:07:27" (1/3) ... [2021-10-13 07:07:28,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108d47e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:28, skipping insertion in model container [2021-10-13 07:07:28,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:27" (2/3) ... [2021-10-13 07:07:28,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108d47e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:28, skipping insertion in model container [2021-10-13 07:07:28,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:28" (3/3) ... [2021-10-13 07:07:28,668 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2021-10-13 07:07:28,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:07:28,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:07:28,752 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:07:28,764 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:07:28,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:07:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:07:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:07:28,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:28,792 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:28,796 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:28,803 INFO L82 PathProgramCache]: Analyzing trace with hash -551124073, now seen corresponding path program 1 times [2021-10-13 07:07:28,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:07:28,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754509214] [2021-10-13 07:07:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:28,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:07:28,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:07:28,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:07:28,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:07:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:28,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:07:28,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:29,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:29,135 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:07:29,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754509214] [2021-10-13 07:07:29,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754509214] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:29,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:29,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:07:29,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038955156] [2021-10-13 07:07:29,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:07:29,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:07:29,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:07:29,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:29,176 INFO L87 Difference]: Start difference. First operand has 31 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 30 states have internal predecessors, (44), 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) [2021-10-13 07:07:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:29,231 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2021-10-13 07:07:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:07:29,233 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 [2021-10-13 07:07:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:29,243 INFO L225 Difference]: With dead ends: 46 [2021-10-13 07:07:29,243 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 07:07:29,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:29,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 07:07:29,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-10-13 07:07:29,292 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) [2021-10-13 07:07:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-10-13 07:07:29,297 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 9 [2021-10-13 07:07:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:29,297 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-10-13 07:07:29,298 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) [2021-10-13 07:07:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-10-13 07:07:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:07:29,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:29,301 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:29,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:29,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:07:29,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:29,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2085816175, now seen corresponding path program 1 times [2021-10-13 07:07:29,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:07:29,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704899943] [2021-10-13 07:07:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:29,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:07:29,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:07:29,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:07:29,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:07:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:29,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:07:29,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:29,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:29,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:07:29,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704899943] [2021-10-13 07:07:29,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704899943] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:29,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:29,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:07:29,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991309624] [2021-10-13 07:07:29,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:07:29,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:07:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:07:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:29,722 INFO L87 Difference]: Start difference. First operand 27 states and 32 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) [2021-10-13 07:07:29,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:29,770 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2021-10-13 07:07:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:07:29,771 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 [2021-10-13 07:07:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:29,773 INFO L225 Difference]: With dead ends: 54 [2021-10-13 07:07:29,773 INFO L226 Difference]: Without dead ends: 34 [2021-10-13 07:07:29,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-13 07:07:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2021-10-13 07:07:29,779 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) [2021-10-13 07:07:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-13 07:07:29,781 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 10 [2021-10-13 07:07:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:29,781 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-13 07:07:29,781 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) [2021-10-13 07:07:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-13 07:07:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:07:29,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:29,783 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:29,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:29,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:07:29,984 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2140661612, now seen corresponding path program 1 times [2021-10-13 07:07:29,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:07:29,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564724345] [2021-10-13 07:07:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:29,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:07:29,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:07:29,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:07:29,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:07:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:30,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:07:30,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:30,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:30,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:07:30,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564724345] [2021-10-13 07:07:30,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564724345] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:30,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:30,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:07:30,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675598255] [2021-10-13 07:07:30,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:07:30,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:07:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:07:30,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:07:30,173 INFO L87 Difference]: Start difference. First operand 27 states and 31 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) [2021-10-13 07:07:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:30,268 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2021-10-13 07:07:30,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:07:30,270 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 [2021-10-13 07:07:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:30,272 INFO L225 Difference]: With dead ends: 47 [2021-10-13 07:07:30,274 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 07:07:30,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:07:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 07:07:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2021-10-13 07:07:30,288 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) [2021-10-13 07:07:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-13 07:07:30,291 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 10 [2021-10-13 07:07:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:30,292 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-13 07:07:30,292 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) [2021-10-13 07:07:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-10-13 07:07:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:07:30,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:30,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:30,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:30,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:07:30,501 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:30,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1997962921, now seen corresponding path program 1 times [2021-10-13 07:07:30,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:07:30,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010720783] [2021-10-13 07:07:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:30,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:07:30,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:07:30,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:07:30,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:07:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:30,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:07:30,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:30,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:30,661 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:07:30,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010720783] [2021-10-13 07:07:30,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010720783] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:30,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:30,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:07:30,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335267283] [2021-10-13 07:07:30,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:07:30,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:07:30,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:07:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:30,664 INFO L87 Difference]: Start difference. First operand 29 states and 33 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) [2021-10-13 07:07:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:30,744 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2021-10-13 07:07:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:07:30,745 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 [2021-10-13 07:07:30,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:30,746 INFO L225 Difference]: With dead ends: 50 [2021-10-13 07:07:30,746 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 07:07:30,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:30,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 07:07:30,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2021-10-13 07:07:30,752 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) [2021-10-13 07:07:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-13 07:07:30,753 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2021-10-13 07:07:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:30,753 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-13 07:07:30,754 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) [2021-10-13 07:07:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-13 07:07:30,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:07:30,755 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:30,755 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:30,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:30,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:07:30,977 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:07:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash 588886092, now seen corresponding path program 1 times [2021-10-13 07:07:30,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:07:30,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869752784] [2021-10-13 07:07:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:30,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:07:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:07:30,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:07:30,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:07:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:31,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:07:31,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:32,093 INFO L354 Elim1Store]: treesize reduction 78, result has 8.2 percent of original size [2021-10-13 07:07:32,094 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 [2021-10-13 07:07:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:32,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:44,037 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-10-13 07:07:44,037 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 [2021-10-13 07:07:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:44,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:07:44,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869752784] [2021-10-13 07:07:44,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869752784] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:44,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:44,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 6] imperfect sequences [] total 14 [2021-10-13 07:07:44,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352497423] [2021-10-13 07:07:44,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:07:44,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:07:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:07:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=132, Unknown=3, NotChecked=0, Total=182 [2021-10-13 07:07:44,489 INFO L87 Difference]: Start difference. First operand 24 states and 27 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) [2021-10-13 07:07:52,767 WARN L207 SmtUtils]: Spent 8.09 s on a formula simplification that was a NOOP. DAG size: 38 [2021-10-13 07:07:58,910 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 33 [2021-10-13 07:08:07,228 WARN L207 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 35 [2021-10-13 07:08:15,408 WARN L207 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 37 [2021-10-13 07:08:33,704 WARN L207 SmtUtils]: Spent 16.19 s on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-10-13 07:08:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:33,742 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-10-13 07:08:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:08:33,744 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 [2021-10-13 07:08:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:33,745 INFO L225 Difference]: With dead ends: 39 [2021-10-13 07:08:33,745 INFO L226 Difference]: Without dead ends: 20 [2021-10-13 07:08:33,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 58538.1ms TimeCoverageRelationStatistics Valid=119, Invalid=298, Unknown=3, NotChecked=0, Total=420 [2021-10-13 07:08:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-13 07:08:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-10-13 07:08:33,748 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) [2021-10-13 07:08:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 07:08:33,750 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-10-13 07:08:33,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:33,750 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 07:08:33,751 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) [2021-10-13 07:08:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 07:08:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:08:33,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:33,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:33,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:08:33,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:08:33,963 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:08:33,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:33,964 INFO L82 PathProgramCache]: Analyzing trace with hash 394194232, now seen corresponding path program 1 times [2021-10-13 07:08:33,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:08:33,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482130372] [2021-10-13 07:08:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:33,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:08:33,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:08:33,966 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:08:33,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:08:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:34,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:08:34,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:08:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:34,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:08:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:34,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:08:34,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482130372] [2021-10-13 07:08:34,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482130372] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:34,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:34,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:08:34,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826243245] [2021-10-13 07:08:34,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:08:34,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:08:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:08:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:08:34,216 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) [2021-10-13 07:08:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:34,241 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-13 07:08:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:08:34,242 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 [2021-10-13 07:08:34,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:34,242 INFO L225 Difference]: With dead ends: 24 [2021-10-13 07:08:34,242 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:08:34,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:08:34,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:08:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:08:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:08:34,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-13 07:08:34,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:34,244 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:08:34,244 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) [2021-10-13 07:08:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:08:34,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:08:34,246 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:08:34,247 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:08:34,247 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:08:34,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 07:08:34,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:08:34,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:08:34,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:34,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:34,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:34,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:34,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:34,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:34,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:34,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:34,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:50,816 WARN L207 SmtUtils]: Spent 16.20 s on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-10-13 07:09:07,035 WARN L207 SmtUtils]: Spent 16.22 s on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-10-13 07:09:07,230 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 147) no Hoare annotation was computed. [2021-10-13 07:09:07,231 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 93) no Hoare annotation was computed. [2021-10-13 07:09:07,231 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2021-10-13 07:09:07,232 INFO L853 garLoopResultBuilder]: At program point L151(lines 29 152) the Hoare annotation is: false [2021-10-13 07:09:07,232 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-13 07:09:07,232 INFO L857 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2021-10-13 07:09:07,232 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 139) no Hoare annotation was computed. [2021-10-13 07:09:07,233 INFO L860 garLoopResultBuilder]: At program point L131(lines 98 132) the Hoare annotation is: true [2021-10-13 07:09:07,233 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:09:07,233 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:09:07,233 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:09:07,233 INFO L853 garLoopResultBuilder]: At program point L156(lines 26 157) the Hoare annotation is: (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))) (.cse3 (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 (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))) (= ULTIMATE.start_main_~main__loop_entered~0 (_ bv0 32))) [2021-10-13 07:09:07,234 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 133) no Hoare annotation was computed. [2021-10-13 07:09:07,234 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 162) no Hoare annotation was computed. [2021-10-13 07:09:07,234 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-10-13 07:09:07,234 INFO L853 garLoopResultBuilder]: At program point L119(lines 99 128) 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))) [2021-10-13 07:09:07,234 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:09:07,234 INFO L857 garLoopResultBuilder]: For program point L62(lines 62 88) no Hoare annotation was computed. [2021-10-13 07:09:07,235 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 152) no Hoare annotation was computed. [2021-10-13 07:09:07,235 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))) [2021-10-13 07:09:07,235 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 167) no Hoare annotation was computed. [2021-10-13 07:09:07,235 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 138) no Hoare annotation was computed. [2021-10-13 07:09:07,236 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))) [2021-10-13 07:09:07,236 INFO L857 garLoopResultBuilder]: For program point L108(lines 108 120) no Hoare annotation was computed. [2021-10-13 07:09:07,236 INFO L857 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-10-13 07:09:07,236 INFO L857 garLoopResultBuilder]: For program point L71(lines 71 80) no Hoare annotation was computed. [2021-10-13 07:09:07,237 INFO L860 garLoopResultBuilder]: At program point L166(lines 14 168) the Hoare annotation is: true [2021-10-13 07:09:07,237 INFO L853 garLoopResultBuilder]: At program point L92(lines 60 93) the Hoare annotation is: false [2021-10-13 07:09:07,237 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 157) no Hoare annotation was computed. [2021-10-13 07:09:07,237 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 110) no Hoare annotation was computed. [2021-10-13 07:09:07,238 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))) [2021-10-13 07:09:07,243 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:09:07,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:09:07 BoogieIcfgContainer [2021-10-13 07:09:07,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:09:07,268 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:09:07,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:09:07,269 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:09:07,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:28" (3/4) ... [2021-10-13 07:09:07,273 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:09:07,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 07:09:07,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:09:07,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:09:07,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:09:07,379 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:09:07,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:09:07,381 INFO L168 Benchmark]: Toolchain (without parser) took 99807.02 ms. Allocated memory was 50.3 MB in the beginning and 83.9 MB in the end (delta: 33.6 MB). Free memory was 27.1 MB in the beginning and 33.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:07,382 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 50.3 MB. Free memory was 31.1 MB in the beginning and 31.1 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:07,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.99 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 26.9 MB in the beginning and 51.9 MB in the end (delta: -25.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:07,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.03 ms. Allocated memory is still 69.2 MB. Free memory was 51.9 MB in the beginning and 50.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:09:07,385 INFO L168 Benchmark]: Boogie Preprocessor took 72.50 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 49.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:07,386 INFO L168 Benchmark]: RCFGBuilder took 545.11 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 37.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:07,387 INFO L168 Benchmark]: TraceAbstraction took 98607.09 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 51.8 MB in the beginning and 37.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:07,387 INFO L168 Benchmark]: Witness Printer took 111.37 ms. Allocated memory is still 83.9 MB. Free memory was 37.4 MB in the beginning and 33.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:09:07,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 50.3 MB. Free memory was 31.1 MB in the beginning and 31.1 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.99 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 26.9 MB in the beginning and 51.9 MB in the end (delta: -25.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.03 ms. Allocated memory is still 69.2 MB. Free memory was 51.9 MB in the beginning and 50.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.50 ms. Allocated memory is still 69.2 MB. Free memory was 50.3 MB in the beginning and 49.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 545.11 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 37.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 98607.09 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 51.8 MB in the beginning and 37.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * Witness Printer took 111.37 ms. Allocated memory is still 83.9 MB. Free memory was 37.4 MB in the beginning and 33.3 MB in the end (delta: 4.1 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: 110]: 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, 31 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 98492.6ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 16.7ms, AutomataDifference: 49615.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 32782.1ms, InitialAbstractionConstructionTime: 14.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 150 SDtfs, 139 SDslu, 195 SDs, 0 SdLazy, 148 SolverSat, 14 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2457.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 58616.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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: 65.0ms AutomataMinimizationTime, 6 MinimizatonAttempts, 33 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 22 NumberOfFragments, 241 HoareAnnotationTreeSize, 9 FomulaSimplifications, 257 FormulaSimplificationTreeSizeReduction, 163.6ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 32611.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 66.5ms SsaConstructionTime, 169.1ms SatisfiabilityAnalysisTime, 14044.4ms 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 3 specifications checked. All of them hold - InvariantResult [Line: 26]: 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))) || main__loop_entered == 0bv32 - InvariantResult [Line: 99]: 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: 98]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:09:07,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fcb0fcb-6e18-4231-8a52-dcc4ecf8b6c3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...