./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test25-2.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_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/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_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/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_ef219f4d-069f-4e11-842b-18df664a4d02/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 095737d8fbee9027efb54bd1ca6a270d14b06184 ................................................................................................................................................................................................................................................................................................................................................................ 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_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/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_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/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_ef219f4d-069f-4e11-842b-18df664a4d02/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 095737d8fbee9027efb54bd1ca6a270d14b06184 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 07:42:55,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:42:55,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:42:55,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:42:55,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:42:55,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:42:55,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:42:55,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:42:55,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:42:55,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:42:55,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:42:55,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:42:55,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:42:55,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:42:55,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:42:55,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:42:55,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:42:55,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:42:55,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:42:55,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:42:55,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:42:55,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:42:55,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:42:55,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:42:55,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:42:55,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:42:55,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:42:55,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:42:55,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:42:55,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:42:55,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:42:55,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:42:55,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:42:55,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:42:55,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:42:55,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:42:55,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:42:55,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:42:55,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:42:55,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:42:55,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:42:55,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:42:55,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:42:55,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:42:55,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:42:55,508 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:42:55,509 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:42:55,509 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:42:55,509 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:42:55,510 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:42:55,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:42:55,510 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:42:55,511 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:42:55,511 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:42:55,512 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:42:55,512 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:42:55,512 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:42:55,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:42:55,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:42:55,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:42:55,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:42:55,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:42:55,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:42:55,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:42:55,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:42:55,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:42:55,516 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:42:55,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:42:55,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:42:55,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:42:55,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:42:55,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:42:55,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:42:55,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:42:55,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:42:55,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:42:55,519 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:42:55,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:42:55,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:42:55,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:42:55,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:42:55,521 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_ef219f4d-069f-4e11-842b-18df664a4d02/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 095737d8fbee9027efb54bd1ca6a270d14b06184 [2021-10-13 07:42:55,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:42:55,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:42:55,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:42:55,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:42:55,922 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:42:55,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-regression/test25-2.c [2021-10-13 07:42:56,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data/9867573c2/b77d971556b54047b05087bd70692a54/FLAG90d510a13 [2021-10-13 07:42:56,630 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:42:56,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/sv-benchmarks/c/ldv-regression/test25-2.c [2021-10-13 07:42:56,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data/9867573c2/b77d971556b54047b05087bd70692a54/FLAG90d510a13 [2021-10-13 07:42:56,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data/9867573c2/b77d971556b54047b05087bd70692a54 [2021-10-13 07:42:56,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:42:56,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:42:56,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:42:56,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:42:56,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:42:56,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:42:56" (1/1) ... [2021-10-13 07:42:56,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d249c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:56, skipping insertion in model container [2021-10-13 07:42:56,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:42:56" (1/1) ... [2021-10-13 07:42:56,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:42:56,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:42:57,220 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_ef219f4d-069f-4e11-842b-18df664a4d02/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2021-10-13 07:42:57,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:42:57,235 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:42:57,260 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_ef219f4d-069f-4e11-842b-18df664a4d02/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2021-10-13 07:42:57,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:42:57,279 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:42:57,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57 WrapperNode [2021-10-13 07:42:57,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:42:57,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:42:57,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:42:57,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:42:57,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:42:57,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:42:57,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:42:57,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:42:57,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:42:57,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:42:57,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:42:57,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:42:57,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (1/1) ... [2021-10-13 07:42:57,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:42:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:42:57,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:42:57,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:42:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:42:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:42:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:42:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:42:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:42:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:42:57,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:42:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:42:57,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:42:57,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:42:57,891 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 07:42:57,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:42:57 BoogieIcfgContainer [2021-10-13 07:42:57,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:42:57,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:42:57,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:42:57,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:42:57,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:42:56" (1/3) ... [2021-10-13 07:42:57,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e693bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:42:57, skipping insertion in model container [2021-10-13 07:42:57,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:57" (2/3) ... [2021-10-13 07:42:57,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e693bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:42:57, skipping insertion in model container [2021-10-13 07:42:57,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:42:57" (3/3) ... [2021-10-13 07:42:57,918 INFO L111 eAbstractionObserver]: Analyzing ICFG test25-2.c [2021-10-13 07:42:57,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:42:57,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:42:57,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:42:57,997 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 07:42:57,997 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:42:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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 07:42:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:42:58,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:42:58,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:42:58,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:42:58,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:42:58,048 INFO L82 PathProgramCache]: Analyzing trace with hash 994857001, now seen corresponding path program 1 times [2021-10-13 07:42:58,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:42:58,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747410624] [2021-10-13 07:42:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:42:58,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:42:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:42:58,455 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 07:42:58,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:42:58,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747410624] [2021-10-13 07:42:58,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747410624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:42:58,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:42:58,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:42:58,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345310424] [2021-10-13 07:42:58,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:42:58,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:42:58,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:42:58,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:42:58,486 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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) 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 07:42:58,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:42:58,517 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2021-10-13 07:42:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:42:58,519 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 07:42:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:42:58,529 INFO L225 Difference]: With dead ends: 25 [2021-10-13 07:42:58,529 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:42:58,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:42:58,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:42:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 07:42:58,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 07:42:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-13 07:42:58,570 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2021-10-13 07:42:58,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:42:58,571 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-13 07:42:58,571 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 07:42:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-13 07:42:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:42:58,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:42:58,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:42:58,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:42:58,573 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:42:58,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:42:58,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1531794660, now seen corresponding path program 1 times [2021-10-13 07:42:58,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:42:58,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978058598] [2021-10-13 07:42:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:42:58,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:42:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:42:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:42:58,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:42:58,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978058598] [2021-10-13 07:42:58,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978058598] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:42:58,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550978205] [2021-10-13 07:42:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:42:58,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:42:58,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:42:58,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:42:58,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:42:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:42:58,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:42:58,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:42:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:42:58,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:42:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:42:58,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550978205] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:42:58,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [21412403] [2021-10-13 07:42:59,022 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-13 07:42:59,023 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:42:59,031 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:42:59,042 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:42:59,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:42:59,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:42:59,138 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:42:59,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:42:59,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-13 07:42:59,153 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:42:59,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:42:59,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-13 07:42:59,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-10-13 07:42:59,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:42:59,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:42:59,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:42:59,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:42:59,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:42:59,484 INFO L354 Elim1Store]: treesize reduction 244, result has 7.9 percent of original size [2021-10-13 07:42:59,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 87 treesize of output 86 [2021-10-13 07:42:59,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:42:59,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-13 07:42:59,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:42:59,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-13 07:42:59,520 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:42:59,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:42:59,617 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:42:59,625 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:42:59,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-13 07:42:59,634 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:42:59,634 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:196, output treesize:175 [2021-10-13 07:42:59,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:42:59,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:42:59,855 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_14| 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 07:42:59,861 INFO L168 Benchmark]: Toolchain (without parser) took 2901.85 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 61.2 MB in the beginning and 82.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:59,862 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 81.8 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:42:59,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.81 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 61.0 MB in the beginning and 83.6 MB in the end (delta: -22.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:59,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.65 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 81.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:59,864 INFO L168 Benchmark]: Boogie Preprocessor took 34.34 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 80.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:59,865 INFO L168 Benchmark]: RCFGBuilder took 529.56 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 67.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:59,871 INFO L168 Benchmark]: TraceAbstraction took 1963.12 ms. Allocated memory is still 107.0 MB. Free memory was 66.7 MB in the beginning and 82.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:59,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 81.8 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.81 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 61.0 MB in the beginning and 83.6 MB in the end (delta: -22.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.65 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 81.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.34 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 80.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 529.56 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 67.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1963.12 ms. Allocated memory is still 107.0 MB. Free memory was 66.7 MB in the beginning and 82.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_14|: 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 07:42:59,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/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 07:43:03,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:43:03,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:43:03,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:43:03,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:43:03,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:43:03,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:43:03,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:43:03,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:43:03,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:43:03,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:43:03,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:43:03,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:43:03,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:43:03,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:43:03,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:43:03,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:43:03,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:43:03,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:43:03,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:43:03,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:43:03,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:43:03,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:43:03,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:43:03,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:43:03,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:43:03,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:43:03,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:43:03,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:43:03,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:43:03,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:43:03,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:43:03,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:43:03,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:43:03,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:43:03,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:43:03,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:43:03,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:43:03,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:43:03,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:43:03,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:43:03,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:43:03,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:43:03,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:43:03,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:43:03,303 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:43:03,303 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:43:03,303 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:43:03,304 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:43:03,304 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:43:03,304 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:43:03,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:43:03,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:43:03,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:43:03,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:43:03,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:43:03,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:43:03,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:43:03,309 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:43:03,309 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:43:03,309 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:43:03,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:43:03,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:43:03,310 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:43:03,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:43:03,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:43:03,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:43:03,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:43:03,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:03,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:43:03,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:43:03,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:43:03,312 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:43:03,312 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:03,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:43:03,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:43:03,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:43:03,314 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_ef219f4d-069f-4e11-842b-18df664a4d02/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 095737d8fbee9027efb54bd1ca6a270d14b06184 [2021-10-13 07:43:03,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:43:03,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:43:03,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:43:03,862 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:43:03,863 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:43:03,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-regression/test25-2.c [2021-10-13 07:43:03,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data/8295effdd/04dc9124ae5e46869a43ed0cdcc188ef/FLAGf0952d5da [2021-10-13 07:43:04,577 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:43:04,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/sv-benchmarks/c/ldv-regression/test25-2.c [2021-10-13 07:43:04,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data/8295effdd/04dc9124ae5e46869a43ed0cdcc188ef/FLAGf0952d5da [2021-10-13 07:43:04,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/data/8295effdd/04dc9124ae5e46869a43ed0cdcc188ef [2021-10-13 07:43:04,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:43:04,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:43:04,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:04,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:43:04,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:43:04,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e66e241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04, skipping insertion in model container [2021-10-13 07:43:04,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:43:04,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:43:05,200 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_ef219f4d-069f-4e11-842b-18df664a4d02/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2021-10-13 07:43:05,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:05,219 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:43:05,246 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_ef219f4d-069f-4e11-842b-18df664a4d02/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2021-10-13 07:43:05,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:05,267 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:43:05,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05 WrapperNode [2021-10-13 07:43:05,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:05,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:05,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:43:05,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:43:05,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:05,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:43:05,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:43:05,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:43:05,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:43:05,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:43:05,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:43:05,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:43:05,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (1/1) ... [2021-10-13 07:43:05,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:05,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:05,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:43:05,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:43:05,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:43:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:43:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:43:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:43:05,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:43:05,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:43:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:43:05,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:43:05,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:43:05,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:43:05,986 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 07:43:05,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:05 BoogieIcfgContainer [2021-10-13 07:43:05,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:43:05,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:43:05,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:43:05,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:43:05,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:43:04" (1/3) ... [2021-10-13 07:43:05,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129bac25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:05, skipping insertion in model container [2021-10-13 07:43:05,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:05" (2/3) ... [2021-10-13 07:43:05,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129bac25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:05, skipping insertion in model container [2021-10-13 07:43:06,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:05" (3/3) ... [2021-10-13 07:43:06,012 INFO L111 eAbstractionObserver]: Analyzing ICFG test25-2.c [2021-10-13 07:43:06,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:43:06,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:43:06,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:43:06,120 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 07:43:06,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:43:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 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 07:43:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:43:06,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:06,169 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:06,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:43:06,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash -631347226, now seen corresponding path program 1 times [2021-10-13 07:43:06,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:06,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608284425] [2021-10-13 07:43:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:06,201 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:06,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:06,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:06,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:43:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:06,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:43:06,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:06,492 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 07:43:06,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:06,561 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 07:43:06,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:06,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608284425] [2021-10-13 07:43:06,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608284425] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:43:06,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:43:06,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:43:06,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920889530] [2021-10-13 07:43:06,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:43:06,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:43:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:43:06,604 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 07:43:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:06,624 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2021-10-13 07:43:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:43:06,627 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 07:43:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:06,637 INFO L225 Difference]: With dead ends: 30 [2021-10-13 07:43:06,637 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:43:06,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:43:06,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:43:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 07:43:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:43:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-13 07:43:06,683 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2021-10-13 07:43:06,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:06,684 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-13 07:43:06,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 07:43:06,685 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-13 07:43:06,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:43:06,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:06,686 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:06,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:06,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:43:06,900 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:43:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1697064536, now seen corresponding path program 1 times [2021-10-13 07:43:06,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:06,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177103145] [2021-10-13 07:43:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:06,903 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:06,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:06,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:06,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:43:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:07,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:43:07,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:07,137 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 07:43:07,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:07,185 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 07:43:07,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:07,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177103145] [2021-10-13 07:43:07,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177103145] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:43:07,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:43:07,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:43:07,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805612417] [2021-10-13 07:43:07,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:43:07,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:07,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:43:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:43:07,208 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 07:43:07,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:07,289 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-13 07:43:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:43:07,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 11 [2021-10-13 07:43:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:07,291 INFO L225 Difference]: With dead ends: 25 [2021-10-13 07:43:07,291 INFO L226 Difference]: Without dead ends: 16 [2021-10-13 07:43:07,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:43:07,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-13 07:43:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-13 07:43:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 07:43:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-13 07:43:07,297 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2021-10-13 07:43:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:07,298 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-13 07:43:07,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 07:43:07,298 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-13 07:43:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:43:07,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:07,300 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:07,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:07,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:43:07,514 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:43:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:07,515 INFO L82 PathProgramCache]: Analyzing trace with hash 201480788, now seen corresponding path program 1 times [2021-10-13 07:43:07,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:07,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453856433] [2021-10-13 07:43:07,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:07,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:07,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:07,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:07,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:43:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:07,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:43:07,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:43:07,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:43:07,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:07,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453856433] [2021-10-13 07:43:07,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453856433] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:07,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1140175494] [2021-10-13 07:43:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:07,852 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:07,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:43:07,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:43:07,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 07:43:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:08,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:43:08,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:43:08,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:43:08,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1140175494] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:08,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706411504] [2021-10-13 07:43:08,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:08,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:43:08,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:08,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:43:08,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:43:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:08,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:43:08,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:43:08,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:43:08,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706411504] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:08,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:43:08,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-13 07:43:08,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34994999] [2021-10-13 07:43:08,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:43:08,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:43:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:43:08,531 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:43:08,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:08,945 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-10-13 07:43:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:43:08,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 07:43:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:08,947 INFO L225 Difference]: With dead ends: 33 [2021-10-13 07:43:08,948 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 07:43:08,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:43:08,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 07:43:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-13 07:43:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) 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 07:43:08,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-13 07:43:08,956 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2021-10-13 07:43:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:08,956 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-13 07:43:08,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:43:08,957 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-13 07:43:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:43:08,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:08,959 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:09,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:09,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:09,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:09,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:09,563 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:43:09,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:09,564 INFO L82 PathProgramCache]: Analyzing trace with hash -616519604, now seen corresponding path program 2 times [2021-10-13 07:43:09,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:09,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141369919] [2021-10-13 07:43:09,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:43:09,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:09,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:09,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:09,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:43:09,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 07:43:09,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:43:09,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:43:09,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:10,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-13 07:43:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-13 07:43:10,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-13 07:43:12,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:12,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141369919] [2021-10-13 07:43:12,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141369919] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:43:12,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:43:12,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 07:43:12,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148714849] [2021-10-13 07:43:12,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:43:12,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:43:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2021-10-13 07:43:12,475 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 07:43:13,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:13,035 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-10-13 07:43:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:43:13,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 23 [2021-10-13 07:43:13,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:13,037 INFO L225 Difference]: With dead ends: 33 [2021-10-13 07:43:13,038 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 07:43:13,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2487.9ms TimeCoverageRelationStatistics Valid=30, Invalid=79, Unknown=1, NotChecked=0, Total=110 [2021-10-13 07:43:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 07:43:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 07:43:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 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 07:43:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-13 07:43:13,045 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2021-10-13 07:43:13,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:13,046 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-13 07:43:13,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 07:43:13,046 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-13 07:43:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 07:43:13,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:13,048 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:13,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:13,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:43:13,262 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:43:13,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:13,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1442110442, now seen corresponding path program 1 times [2021-10-13 07:43:13,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:13,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95591260] [2021-10-13 07:43:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:13,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:13,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:13,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:13,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:43:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:13,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:43:13,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 07:43:13,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 07:43:13,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:13,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95591260] [2021-10-13 07:43:13,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95591260] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:13,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1062280383] [2021-10-13 07:43:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:13,952 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:13,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:43:13,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:43:13,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 07:43:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:14,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:43:14,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 07:43:14,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 07:43:14,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1062280383] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:14,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740004338] [2021-10-13 07:43:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:14,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:43:14,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:14,553 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:43:14,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 07:43:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:14,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:43:14,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 07:43:14,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 07:43:14,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740004338] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:14,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:43:14,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2021-10-13 07:43:14,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129469133] [2021-10-13 07:43:14,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 07:43:14,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 07:43:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:43:14,995 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:43:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:15,981 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-10-13 07:43:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:43:15,983 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 07:43:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:15,985 INFO L225 Difference]: With dead ends: 49 [2021-10-13 07:43:15,985 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 07:43:15,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 319.6ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:43:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 07:43:15,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-13 07:43:15,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:43:15,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-10-13 07:43:15,993 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 27 [2021-10-13 07:43:15,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:15,994 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-10-13 07:43:15,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:43:15,995 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-10-13 07:43:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 07:43:15,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:15,996 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:16,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:16,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:16,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-13 07:43:16,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:43:16,602 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:43:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:16,603 INFO L82 PathProgramCache]: Analyzing trace with hash 70008334, now seen corresponding path program 2 times [2021-10-13 07:43:16,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:16,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274551058] [2021-10-13 07:43:16,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:43:16,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:16,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:16,607 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:16,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:43:16,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:43:16,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:43:16,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:43:16,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:17,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-13 07:43:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-13 07:43:17,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-13 07:43:20,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:20,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274551058] [2021-10-13 07:43:20,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274551058] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:20,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [530892282] [2021-10-13 07:43:20,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:43:20,330 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:20,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:43:20,331 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:43:20,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-13 07:43:20,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:43:20,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:43:20,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:43:20,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:22,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2021-10-13 07:43:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-13 07:43:22,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:23,445 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-10-13 07:43:23,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 30 [2021-10-13 07:43:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-13 07:43:25,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [530892282] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:25,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065775708] [2021-10-13 07:43:25,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:43:25,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:43:25,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:25,686 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:43:25,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 07:43:26,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:43:26,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:43:26,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 07:43:26,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:28,738 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-13 07:43:28,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 21 [2021-10-13 07:43:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:43:28,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:28,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 24 [2021-10-13 07:43:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-13 07:43:29,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065775708] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:29,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:43:29,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 10, 9, 18, 8] total 39 [2021-10-13 07:43:29,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473784949] [2021-10-13 07:43:29,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-13 07:43:29,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:29,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-13 07:43:29,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1289, Unknown=2, NotChecked=0, Total=1482 [2021-10-13 07:43:29,076 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 39 states have internal predecessors, (67), 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 07:43:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:35,984 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-10-13 07:43:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 07:43:35,986 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 07:43:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:35,987 INFO L225 Difference]: With dead ends: 49 [2021-10-13 07:43:35,987 INFO L226 Difference]: Without dead ends: 44 [2021-10-13 07:43:35,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 10406.9ms TimeCoverageRelationStatistics Valid=355, Invalid=2193, Unknown=2, NotChecked=0, Total=2550 [2021-10-13 07:43:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-13 07:43:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-13 07:43:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 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 07:43:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-10-13 07:43:35,998 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 35 [2021-10-13 07:43:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:35,999 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-13 07:43:36,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 39 states have internal predecessors, (67), 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 07:43:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-10-13 07:43:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 07:43:36,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:36,008 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:36,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:36,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:36,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-10-13 07:43:36,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:36,635 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:43:36,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:36,635 INFO L82 PathProgramCache]: Analyzing trace with hash 312565410, now seen corresponding path program 3 times [2021-10-13 07:43:36,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:36,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214830374] [2021-10-13 07:43:36,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:43:36,636 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:36,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:36,637 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:36,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:43:36,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 07:43:36,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:43:36,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 07:43:36,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:37,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 79 [2021-10-13 07:43:37,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 59 [2021-10-13 07:43:37,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 29 [2021-10-13 07:43:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-10-13 07:43:37,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-10-13 07:43:39,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:39,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214830374] [2021-10-13 07:43:39,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214830374] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:39,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1702893211] [2021-10-13 07:43:39,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:43:39,766 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:39,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:43:39,767 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:43:39,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-13 07:43:40,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 07:43:40,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:43:40,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 07:43:40,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:40,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-13 07:43:40,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:43:42,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 94 [2021-10-13 07:43:42,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 44 [2021-10-13 07:43:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-10-13 07:43:42,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:43,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 27 [2021-10-13 07:43:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-10-13 07:43:43,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1702893211] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:43,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034934737] [2021-10-13 07:43:43,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:43:43,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:43:43,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:43,289 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:43:43,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 07:43:44,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 07:43:44,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:43:44,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 07:43:44,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:44,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 07:43:44,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 07:43:46,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 94 [2021-10-13 07:43:46,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 70 [2021-10-13 07:43:46,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 35 [2021-10-13 07:43:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-10-13 07:43:46,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:48,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 33 [2021-10-13 07:43:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-10-13 07:43:48,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034934737] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:48,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:43:48,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11, 10, 13, 12] total 37 [2021-10-13 07:43:48,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587412470] [2021-10-13 07:43:48,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-13 07:43:48,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:48,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-13 07:43:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1116, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 07:43:48,699 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 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 07:43:51,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:51,985 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-10-13 07:43:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:43:51,986 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 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 43 [2021-10-13 07:43:51,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:51,987 INFO L225 Difference]: With dead ends: 44 [2021-10-13 07:43:51,987 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:43:51,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 6509.5ms TimeCoverageRelationStatistics Valid=391, Invalid=1589, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 07:43:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:43:51,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:43:51,989 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 07:43:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:43:51,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-10-13 07:43:51,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:51,990 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:43:51,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 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 07:43:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:43:51,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:43:51,994 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:43:52,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-13 07:43:52,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:52,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:52,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:52,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:43:52,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:43:52,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:43:52,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:43:52,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:43:52,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:43:53,033 INFO L853 garLoopResultBuilder]: At program point L19(lines 17 20) the Hoare annotation is: (let ((.cse2 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|)) (.cse0 (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|)))) (let ((.cse1 (select (select |#memory_int| .cse2) .cse0))) (and (= .cse0 ULTIMATE.start_main_~pa~0.offset) (bvsgt .cse1 (_ bv0 32)) (exists ((v_ULTIMATE.start_main_~i~0_62 (_ BitVec 32))) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) (bvmul (_ bv8 32) v_ULTIMATE.start_main_~i~0_62)) (bvsge v_ULTIMATE.start_main_~i~0_62 (_ bv0 32)) (bvslt v_ULTIMATE.start_main_~i~0_62 (_ bv10 32)))) (not (bvslt ULTIMATE.start_main_~i~0 .cse1)) (= |ULTIMATE.start_check_#res| (_ bv1 32)) (= |ULTIMATE.start_main_~#array~0.offset| (_ bv0 32)) (= |ULTIMATE.start_main_~#cont~0.offset| (_ bv0 32)) (= ULTIMATE.start_main_~pa~0.base .cse2) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~0) .cse1)))) [2021-10-13 07:43:53,033 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:43:53,034 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:43:53,034 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:43:53,034 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2021-10-13 07:43:53,034 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 45) no Hoare annotation was computed. [2021-10-13 07:43:53,034 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:43:53,034 INFO L857 garLoopResultBuilder]: For program point L29-2(lines 29 32) no Hoare annotation was computed. [2021-10-13 07:43:53,034 INFO L853 garLoopResultBuilder]: At program point L29-3(lines 29 32) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#array~0.offset| (_ bv0 32)) (= |ULTIMATE.start_main_~#cont~0.offset| (_ bv0 32))) [2021-10-13 07:43:53,034 INFO L857 garLoopResultBuilder]: For program point L29-4(lines 23 52) no Hoare annotation was computed. [2021-10-13 07:43:53,035 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-10-13 07:43:53,035 INFO L857 garLoopResultBuilder]: For program point L34(lines 34 46) no Hoare annotation was computed. [2021-10-13 07:43:53,035 INFO L860 garLoopResultBuilder]: At program point L51(lines 22 52) the Hoare annotation is: true [2021-10-13 07:43:53,035 INFO L853 garLoopResultBuilder]: At program point L43(lines 23 52) the Hoare annotation is: false [2021-10-13 07:43:53,035 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 39 41) no Hoare annotation was computed. [2021-10-13 07:43:53,035 INFO L853 garLoopResultBuilder]: At program point L39-3(lines 39 41) the Hoare annotation is: (let ((.cse0 (bvadd (_ bv4 32) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|))) (.cse1 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|))) (and (= .cse0 ULTIMATE.start_main_~pa~0.offset) (bvsgt (select (select |#memory_int| .cse1) .cse0) (_ bv0 32)) (exists ((v_ULTIMATE.start_main_~i~0_62 (_ BitVec 32))) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) (bvmul (_ bv8 32) v_ULTIMATE.start_main_~i~0_62)) (bvsge v_ULTIMATE.start_main_~i~0_62 (_ bv0 32)) (bvslt v_ULTIMATE.start_main_~i~0_62 (_ bv10 32)))) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~0) (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (= |ULTIMATE.start_main_~#array~0.offset| (_ bv0 32)) (= |ULTIMATE.start_main_~#cont~0.offset| (_ bv0 32)) (= ULTIMATE.start_main_~pa~0.base .cse1))) [2021-10-13 07:43:53,035 INFO L857 garLoopResultBuilder]: For program point L39-4(lines 39 41) no Hoare annotation was computed. [2021-10-13 07:43:53,041 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:43:53,053 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,056 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,056 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,057 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,057 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,057 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,058 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,058 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,067 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,068 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,068 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,069 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,069 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,069 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,069 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,070 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,074 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,074 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,075 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,075 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,076 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,076 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,076 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,077 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,078 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,079 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,082 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,083 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,095 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,096 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,097 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,097 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,097 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,098 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,098 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,098 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,098 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,099 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,099 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,099 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:43:53 BoogieIcfgContainer [2021-10-13 07:43:53,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:43:53,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:43:53,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:43:53,106 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:43:53,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:05" (3/4) ... [2021-10-13 07:43:53,110 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:43:53,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-13 07:43:53,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 07:43:53,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:43:53,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:43:53,165 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((~bvadd64(4bv32, #memory_$Pointer$[cont][cont]) == pa && ~bvsgt32(unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][~bvadd64(4bv32, #memory_$Pointer$[cont][cont])], 0bv32)) && (\exists v_ULTIMATE.start_main_~i~0_62 : bv32 :: (#memory_$Pointer$[cont][cont] == ~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_62) && ~bvsge32(v_ULTIMATE.start_main_~i~0_62, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_62, 10bv32))) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[pa][pa])) && array == 0bv32) && cont == 0bv32) && pa == #memory_$Pointer$[cont][cont] [2021-10-13 07:43:53,166 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((~bvadd64(4bv32, #memory_$Pointer$[cont][cont]) == pa && ~bvsgt32(unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][~bvadd64(4bv32, #memory_$Pointer$[cont][cont])], 0bv32)) && (\exists v_ULTIMATE.start_main_~i~0_62 : bv32 :: (#memory_$Pointer$[cont][cont] == ~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_62) && ~bvsge32(v_ULTIMATE.start_main_~i~0_62, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_62, 10bv32))) && !~bvslt32(i, unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][~bvadd64(4bv32, #memory_$Pointer$[cont][cont])])) && \result == 1bv32) && array == 0bv32) && cont == 0bv32) && pa == #memory_$Pointer$[cont][cont]) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][~bvadd64(4bv32, #memory_$Pointer$[cont][cont])]) [2021-10-13 07:43:53,188 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:43:53,188 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:43:53,190 INFO L168 Benchmark]: Toolchain (without parser) took 48237.24 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 29.3 MB in the beginning and 24.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:53,190 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:43:53,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.87 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 32.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:53,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.95 ms. Allocated memory is still 52.4 MB. Free memory was 32.0 MB in the beginning and 30.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:53,193 INFO L168 Benchmark]: Boogie Preprocessor took 36.91 ms. Allocated memory is still 52.4 MB. Free memory was 30.4 MB in the beginning and 29.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:53,193 INFO L168 Benchmark]: RCFGBuilder took 633.64 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.0 MB in the beginning and 42.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:53,194 INFO L168 Benchmark]: TraceAbstraction took 47113.33 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 42.0 MB in the beginning and 27.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:53,194 INFO L168 Benchmark]: Witness Printer took 83.40 ms. Allocated memory is still 83.9 MB. Free memory was 27.7 MB in the beginning and 24.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:53,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 33.9 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.87 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 32.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.95 ms. Allocated memory is still 52.4 MB. Free memory was 32.0 MB in the beginning and 30.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.91 ms. Allocated memory is still 52.4 MB. Free memory was 30.4 MB in the beginning and 29.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 633.64 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.0 MB in the beginning and 42.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 47113.33 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 42.0 MB in the beginning and 27.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * Witness Printer took 83.40 ms. Allocated memory is still 83.9 MB. Free memory was 27.7 MB in the beginning and 24.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * 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: 50]: 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46938.5ms, OverallIterations: 7, TraceHistogramMax: 10, EmptinessCheckTime: 41.1ms, AutomataDifference: 12349.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 412.6ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 79 SDtfs, 81 SDslu, 294 SDs, 0 SdLazy, 891 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7506.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 805 GetRequests, 677 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 19877.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=6, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 24 NumberOfFragments, 172 HoareAnnotationTreeSize, 5 FomulaSimplifications, 602 FormulaSimplificationTreeSizeReduction, 96.6ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 132 FormulaSimplificationTreeSizeReductionInter, 307.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 343.3ms SsaConstructionTime, 1934.7ms SatisfiabilityAnalysisTime, 26126.8ms InterpolantComputationTime, 404 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 778 ConstructedInterpolants, 80 QuantifiedInterpolants, 6494 SizeOfPredicates, 127 NumberOfNonLiveVariables, 1343 ConjunctsInSsa, 193 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 1381/1836 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant [2021-10-13 07:43:53,224 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,224 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,224 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,224 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,225 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,225 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,225 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,230 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,232 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,232 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,233 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,235 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,236 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,236 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,236 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,238 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: (((((~bvadd64(4bv32, #memory_$Pointer$[cont][cont]) == pa && ~bvsgt32(unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][~bvadd64(4bv32, #memory_$Pointer$[cont][cont])], 0bv32)) && (\exists v_ULTIMATE.start_main_~i~0_62 : bv32 :: (#memory_$Pointer$[cont][cont] == ~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_62) && ~bvsge32(v_ULTIMATE.start_main_~i~0_62, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_62, 10bv32))) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[pa][pa])) && array == 0bv32) && cont == 0bv32) && pa == #memory_$Pointer$[cont][cont] - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: array == 0bv32 && cont == 0bv32 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant [2021-10-13 07:43:53,246 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,247 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,247 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,247 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,248 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,248 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,248 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,249 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,249 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,249 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,249 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,250 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,253 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,254 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,256 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,256 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,256 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,257 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,257 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_62,QUANTIFIED] [2021-10-13 07:43:53,257 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,257 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-13 07:43:53,258 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,258 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-13 07:43:53,258 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (((((((~bvadd64(4bv32, #memory_$Pointer$[cont][cont]) == pa && ~bvsgt32(unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][~bvadd64(4bv32, #memory_$Pointer$[cont][cont])], 0bv32)) && (\exists v_ULTIMATE.start_main_~i~0_62 : bv32 :: (#memory_$Pointer$[cont][cont] == ~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_62) && ~bvsge32(v_ULTIMATE.start_main_~i~0_62, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_62, 10bv32))) && !~bvslt32(i, unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][~bvadd64(4bv32, #memory_$Pointer$[cont][cont])])) && \result == 1bv32) && array == 0bv32) && cont == 0bv32) && pa == #memory_$Pointer$[cont][cont]) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][~bvadd64(4bv32, #memory_$Pointer$[cont][cont])]) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:43:53,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef219f4d-069f-4e11-842b-18df664a4d02/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...