./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/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_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/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_308d8559-f44d-4cf7-9b12-db7c4042915e/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 06227ec276f1d25f93ba083804945e6bbc61c8e5 .............................................................................................................................................................................................................................................................................................................................................................................. 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_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/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_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/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_308d8559-f44d-4cf7-9b12-db7c4042915e/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 06227ec276f1d25f93ba083804945e6bbc61c8e5 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:25:02,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:25:02,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:25:02,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:25:02,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:25:02,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:25:02,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:25:02,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:25:02,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:25:02,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:25:02,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:25:02,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:25:02,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:25:02,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:25:02,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:25:02,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:25:02,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:25:02,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:25:02,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:25:02,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:25:02,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:25:02,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:25:02,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:25:02,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:25:02,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:25:02,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:25:02,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:25:02,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:25:02,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:25:02,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:25:02,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:25:02,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:25:02,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:25:02,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:25:02,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:25:02,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:25:02,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:25:02,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:25:02,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:25:02,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:25:02,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:25:02,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:25:02,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:25:02,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:25:02,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:25:02,426 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:25:02,426 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:25:02,427 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:25:02,427 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:25:02,427 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:25:02,428 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:25:02,428 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:25:02,429 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:25:02,430 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:25:02,430 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:25:02,430 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:25:02,430 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:25:02,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:25:02,432 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:25:02,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:25:02,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:25:02,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:25:02,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:25:02,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:25:02,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:25:02,434 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:25:02,434 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:25:02,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:25:02,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:25:02,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:25:02,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:25:02,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:25:02,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:02,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:25:02,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:25:02,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:25:02,439 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:25:02,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:25:02,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:25:02,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:25:02,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:25:02,440 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_308d8559-f44d-4cf7-9b12-db7c4042915e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06227ec276f1d25f93ba083804945e6bbc61c8e5 [2021-10-13 07:25:02,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:25:02,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:25:02,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:25:02,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:25:02,847 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:25:02,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-10-13 07:25:02,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data/9778aaaa9/fbcced12328842b997a873d9dddb3afd/FLAGfd82574dc [2021-10-13 07:25:03,619 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:25:03,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-10-13 07:25:03,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data/9778aaaa9/fbcced12328842b997a873d9dddb3afd/FLAGfd82574dc [2021-10-13 07:25:03,878 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data/9778aaaa9/fbcced12328842b997a873d9dddb3afd [2021-10-13 07:25:03,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:25:03,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:25:03,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:03,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:25:03,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:25:03,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:03" (1/1) ... [2021-10-13 07:25:03,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24508bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:03, skipping insertion in model container [2021-10-13 07:25:03,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:03" (1/1) ... [2021-10-13 07:25:03,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:25:03,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:25:04,244 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_308d8559-f44d-4cf7-9b12-db7c4042915e/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-10-13 07:25:04,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:04,270 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:25:04,352 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_308d8559-f44d-4cf7-9b12-db7c4042915e/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-10-13 07:25:04,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:04,381 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:25:04,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04 WrapperNode [2021-10-13 07:25:04,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:04,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:04,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:25:04,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:25:04,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:04,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:25:04,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:25:04,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:25:04,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:25:04,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:25:04,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:25:04,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:25:04,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (1/1) ... [2021-10-13 07:25:04,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:04,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:25:04,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:25:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:25:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-13 07:25:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:25:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:25:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:25:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:25:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:25:04,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:25:05,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:25:05,877 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:25:05,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:05 BoogieIcfgContainer [2021-10-13 07:25:05,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:25:05,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:25:05,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:25:05,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:25:05,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:25:03" (1/3) ... [2021-10-13 07:25:05,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103552fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:05, skipping insertion in model container [2021-10-13 07:25:05,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:04" (2/3) ... [2021-10-13 07:25:05,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103552fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:05, skipping insertion in model container [2021-10-13 07:25:05,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:05" (3/3) ... [2021-10-13 07:25:05,897 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2021-10-13 07:25:05,905 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:25:05,905 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:25:05,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:25:05,973 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 07:25:05,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:25:05,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 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 07:25:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:25:05,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:05,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:25:05,998 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:06,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1953555076, now seen corresponding path program 1 times [2021-10-13 07:25:06,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:06,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855863612] [2021-10-13 07:25:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:06,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:06,528 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 07:25:06,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:06,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855863612] [2021-10-13 07:25:06,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855863612] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:06,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:06,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:25:06,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888848181] [2021-10-13 07:25:06,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:25:06,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:25:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:25:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:25:06,568 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 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) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 07:25:06,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:06,672 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-10-13 07:25:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:25:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2021-10-13 07:25:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:06,686 INFO L225 Difference]: With dead ends: 24 [2021-10-13 07:25:06,686 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:25:06,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:25:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:25:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2021-10-13 07:25:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:06,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-13 07:25:06,729 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-10-13 07:25:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:06,730 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-13 07:25:06,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 07:25:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-13 07:25:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:25:06,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:06,732 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:06,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:25:06,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:06,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:06,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1000383431, now seen corresponding path program 1 times [2021-10-13 07:25:06,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:06,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335972057] [2021-10-13 07:25:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:06,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:07,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:07,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335972057] [2021-10-13 07:25:07,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335972057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:25:07,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575485090] [2021-10-13 07:25:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:07,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:07,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:07,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:07,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:25:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:07,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 07:25:07,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:07,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:07,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575485090] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:07,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1748198335] [2021-10-13 07:25:07,934 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-13 07:25:07,934 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:25:07,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:25:07,949 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:25:07,949 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:25:08,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,032 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:25:08,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-13 07:25:08,037 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:25:08,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-13 07:25:08,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-10-13 07:25:08,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 43 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 36 [2021-10-13 07:25:08,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:25:08,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:25:08,231 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:25:08,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:08,305 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 366 [2021-10-13 07:25:08,322 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:25:08,323 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:355, output treesize:366 [2021-10-13 07:25:08,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:08,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:08,549 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_31| 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 07:25:08,553 INFO L168 Benchmark]: Toolchain (without parser) took 4669.16 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 73.4 MB in the beginning and 50.8 MB in the end (delta: 22.6 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:08,554 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 115.3 MB. Free memory is still 91.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:08,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.77 ms. Allocated memory is still 115.3 MB. Free memory was 73.3 MB in the beginning and 83.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:08,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.90 ms. Allocated memory is still 115.3 MB. Free memory was 83.6 MB in the beginning and 80.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:08,556 INFO L168 Benchmark]: Boogie Preprocessor took 101.10 ms. Allocated memory is still 115.3 MB. Free memory was 80.3 MB in the beginning and 77.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:08,557 INFO L168 Benchmark]: RCFGBuilder took 1307.57 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 77.3 MB in the beginning and 89.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:08,558 INFO L168 Benchmark]: TraceAbstraction took 2668.65 ms. Allocated memory is still 138.4 MB. Free memory was 88.3 MB in the beginning and 50.8 MB in the end (delta: 37.5 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:08,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 115.3 MB. Free memory is still 91.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 497.77 ms. Allocated memory is still 115.3 MB. Free memory was 73.3 MB in the beginning and 83.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.90 ms. Allocated memory is still 115.3 MB. Free memory was 83.6 MB in the beginning and 80.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 101.10 ms. Allocated memory is still 115.3 MB. Free memory was 80.3 MB in the beginning and 77.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1307.57 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 77.3 MB in the beginning and 89.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2668.65 ms. Allocated memory is still 138.4 MB. Free memory was 88.3 MB in the beginning and 50.8 MB in the end (delta: 37.5 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_31| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_31|: 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 07:25:08,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/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 07:25:11,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:25:11,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:25:11,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:25:11,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:25:11,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:25:11,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:25:11,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:25:11,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:25:11,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:25:11,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:25:11,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:25:11,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:25:11,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:25:11,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:25:11,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:25:11,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:25:11,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:25:11,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:25:11,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:25:11,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:25:11,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:25:11,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:25:11,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:25:11,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:25:11,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:25:11,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:25:11,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:25:11,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:25:11,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:25:11,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:25:11,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:25:11,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:25:11,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:25:11,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:25:11,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:25:11,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:25:11,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:25:11,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:25:11,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:25:11,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:25:11,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:25:11,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:25:11,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:25:11,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:25:11,831 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:25:11,831 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:25:11,831 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:25:11,831 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:25:11,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:25:11,832 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:25:11,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:25:11,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:25:11,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:25:11,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:25:11,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:25:11,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:25:11,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:25:11,837 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:25:11,837 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:25:11,837 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:25:11,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:25:11,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:25:11,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:25:11,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:25:11,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:25:11,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:25:11,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:25:11,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:11,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:25:11,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:25:11,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:25:11,840 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:25:11,840 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:11,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:25:11,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:25:11,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:25:11,842 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_308d8559-f44d-4cf7-9b12-db7c4042915e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06227ec276f1d25f93ba083804945e6bbc61c8e5 [2021-10-13 07:25:12,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:25:12,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:25:12,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:25:12,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:25:12,357 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:25:12,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-10-13 07:25:12,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data/7402299a8/1e56f16a8e4642adb0ddd4af5462017b/FLAGe96d6ac4e [2021-10-13 07:25:13,149 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:25:13,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-10-13 07:25:13,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data/7402299a8/1e56f16a8e4642adb0ddd4af5462017b/FLAGe96d6ac4e [2021-10-13 07:25:13,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/data/7402299a8/1e56f16a8e4642adb0ddd4af5462017b [2021-10-13 07:25:13,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:25:13,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:25:13,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:13,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:25:13,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:25:13,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3179034f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13, skipping insertion in model container [2021-10-13 07:25:13,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:25:13,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:25:13,766 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_308d8559-f44d-4cf7-9b12-db7c4042915e/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-10-13 07:25:13,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:13,838 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:25:13,967 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_308d8559-f44d-4cf7-9b12-db7c4042915e/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-10-13 07:25:13,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:13,989 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:25:13,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13 WrapperNode [2021-10-13 07:25:13,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:13,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:13,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:25:13,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:25:14,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:14,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:25:14,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:25:14,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:25:14,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:25:14,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:25:14,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:25:14,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:25:14,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:14,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:14,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:14,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:25:14,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:25:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:25:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-13 07:25:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:25:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-13 07:25:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:25:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:25:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:25:14,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:25:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:25:15,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:25:15,676 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:25:15,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:15 BoogieIcfgContainer [2021-10-13 07:25:15,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:25:15,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:25:15,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:25:15,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:25:15,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:25:13" (1/3) ... [2021-10-13 07:25:15,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bf3dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:15, skipping insertion in model container [2021-10-13 07:25:15,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (2/3) ... [2021-10-13 07:25:15,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bf3dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:15, skipping insertion in model container [2021-10-13 07:25:15,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:15" (3/3) ... [2021-10-13 07:25:15,690 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2021-10-13 07:25:15,697 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:25:15,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:25:15,777 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:25:15,789 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 07:25:15,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:25:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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 07:25:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:25:15,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:15,835 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:15,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:15,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1180906794, now seen corresponding path program 1 times [2021-10-13 07:25:15,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:15,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846121355] [2021-10-13 07:25:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:15,870 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:15,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:15,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:15,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:25:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:16,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:25:16,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:16,382 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 07:25:16,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:16,438 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 07:25:16,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:16,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846121355] [2021-10-13 07:25:16,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846121355] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:16,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:16,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:25:16,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343664404] [2021-10-13 07:25:16,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:25:16,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:16,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:25:16,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:25:16,469 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 07:25:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:16,586 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-10-13 07:25:16,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:25:16,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) Word has length 9 [2021-10-13 07:25:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:16,600 INFO L225 Difference]: With dead ends: 38 [2021-10-13 07:25:16,600 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 07:25:16,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:25:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 07:25:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 13. [2021-10-13 07:25:16,642 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 07:25:16,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-13 07:25:16,645 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2021-10-13 07:25:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:16,646 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-13 07:25:16,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 07:25:16,647 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-13 07:25:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:25:16,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:16,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:16,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:16,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:16,867 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:16,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1181383450, now seen corresponding path program 1 times [2021-10-13 07:25:16,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:16,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089549327] [2021-10-13 07:25:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:16,870 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:16,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:16,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:16,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:25:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:17,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:25:17,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:17,216 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 07:25:17,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:17,288 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 07:25:17,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:17,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089549327] [2021-10-13 07:25:17,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089549327] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:17,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:17,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:25:17,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988110892] [2021-10-13 07:25:17,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:25:17,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:17,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:25:17,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:25:17,294 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:17,408 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-10-13 07:25:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:25:17,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:25:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:17,410 INFO L225 Difference]: With dead ends: 37 [2021-10-13 07:25:17,410 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 07:25:17,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.8ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:25:17,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 07:25:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-10-13 07:25:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-13 07:25:17,418 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2021-10-13 07:25:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:17,419 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-13 07:25:17,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-13 07:25:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:25:17,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:17,421 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:17,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:17,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:17,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash -192165078, now seen corresponding path program 1 times [2021-10-13 07:25:17,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:17,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661726824] [2021-10-13 07:25:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:17,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:17,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:17,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:17,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:25:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:17,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:25:17,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:18,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:18,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:18,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661726824] [2021-10-13 07:25:18,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661726824] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:18,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [824759445] [2021-10-13 07:25:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:18,384 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:18,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:25:18,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:25:18,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 07:25:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:18,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:25:18,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:19,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:19,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [824759445] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:19,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327999300] [2021-10-13 07:25:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:19,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:19,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:19,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:19,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:25:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:19,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:25:19,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:19,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:19,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327999300] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:19,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:25:19,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 8] total 14 [2021-10-13 07:25:19,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380924631] [2021-10-13 07:25:19,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:25:19,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:25:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:25:19,944 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 07:25:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:20,665 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-13 07:25:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:25:20,666 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 07:25:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:20,667 INFO L225 Difference]: With dead ends: 61 [2021-10-13 07:25:20,668 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 07:25:20,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 434.6ms TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:25:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 07:25:20,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2021-10-13 07:25:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 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 07:25:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-10-13 07:25:20,689 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 21 [2021-10-13 07:25:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:20,689 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-10-13 07:25:20,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 07:25:20,690 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-10-13 07:25:20,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 07:25:20,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:20,694 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:20,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:20,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-13 07:25:21,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:21,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:21,315 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:21,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:21,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1234936650, now seen corresponding path program 2 times [2021-10-13 07:25:21,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:21,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500888898] [2021-10-13 07:25:21,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:25:21,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:21,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:21,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:21,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:25:23,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:25:23,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:25:23,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:25:23,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:23,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:24,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:24,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500888898] [2021-10-13 07:25:24,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500888898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:24,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [970432497] [2021-10-13 07:25:24,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:25:24,430 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:24,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:25:24,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:25:24,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 07:25:25,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:25:25,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:25:25,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:25:25,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:25,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:26,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [970432497] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:26,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800013434] [2021-10-13 07:25:26,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:25:26,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:26,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:26,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:26,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 07:25:26,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:25:26,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:25:26,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:25:26,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:27,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:27,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800013434] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:27,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:25:27,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 12] total 26 [2021-10-13 07:25:27,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085540549] [2021-10-13 07:25:27,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 07:25:27,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 07:25:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-10-13 07:25:27,964 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 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 07:25:30,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:30,103 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2021-10-13 07:25:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 07:25:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 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 45 [2021-10-13 07:25:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:30,106 INFO L225 Difference]: With dead ends: 109 [2021-10-13 07:25:30,106 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 07:25:30,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1320.0ms TimeCoverageRelationStatistics Valid=519, Invalid=1203, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 07:25:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 07:25:30,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2021-10-13 07:25:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 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 07:25:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-10-13 07:25:30,125 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 45 [2021-10-13 07:25:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:30,130 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-10-13 07:25:30,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 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 07:25:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-10-13 07:25:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-13 07:25:30,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:30,135 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:30,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:30,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:30,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 07:25:30,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:30,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:30,763 INFO L82 PathProgramCache]: Analyzing trace with hash -824167542, now seen corresponding path program 3 times [2021-10-13 07:25:30,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:30,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73464703] [2021-10-13 07:25:30,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:25:30,764 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:30,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:30,765 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:30,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:25:33,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 07:25:33,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:25:33,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:25:33,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:34,704 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:34,705 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 17 treesize of output 17 [2021-10-13 07:25:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 80 proven. 55 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-13 07:25:34,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 28 proven. 107 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-13 07:25:37,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:37,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73464703] [2021-10-13 07:25:37,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73464703] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:37,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1607608192] [2021-10-13 07:25:37,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:25:37,829 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:37,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:25:37,830 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:25:37,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 07:25:39,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 07:25:39,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:25:39,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:25:39,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:40,485 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:40,485 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 17 treesize of output 17 [2021-10-13 07:25:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 80 proven. 55 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-13 07:25:40,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 28 proven. 107 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-13 07:25:42,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1607608192] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:42,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997066030] [2021-10-13 07:25:42,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:25:42,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:42,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:42,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:42,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 07:25:43,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 07:25:43,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:25:43,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:25:43,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:44,866 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:44,866 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 17 treesize of output 17 [2021-10-13 07:25:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 80 proven. 55 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-13 07:25:44,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 28 proven. 120 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2021-10-13 07:25:49,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997066030] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:49,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:25:49,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 15 [2021-10-13 07:25:49,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347790227] [2021-10-13 07:25:49,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 07:25:49,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 07:25:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:25:49,544 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 07:25:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:50,407 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2021-10-13 07:25:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:25:50,409 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 93 [2021-10-13 07:25:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:50,409 INFO L225 Difference]: With dead ends: 100 [2021-10-13 07:25:50,410 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:25:50,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3094.6ms TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2021-10-13 07:25:50,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:25:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:25:50,411 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 07:25:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:25:50,411 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2021-10-13 07:25:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:50,412 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:25:50,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 07:25:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:25:50,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:25:50,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:25:50,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:50,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:50,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:51,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:51,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:25:51,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:51,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:51,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:51,638 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 224) no Hoare annotation was computed. [2021-10-13 07:25:51,638 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:25:51,638 INFO L860 garLoopResultBuilder]: At program point L221(lines 133 225) the Hoare annotation is: true [2021-10-13 07:25:51,638 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 217) no Hoare annotation was computed. [2021-10-13 07:25:51,638 INFO L857 garLoopResultBuilder]: For program point L180(lines 180 222) no Hoare annotation was computed. [2021-10-13 07:25:51,639 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 209) no Hoare annotation was computed. [2021-10-13 07:25:51,639 INFO L857 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2021-10-13 07:25:51,639 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:25:51,639 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 210) no Hoare annotation was computed. [2021-10-13 07:25:51,639 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:25:51,639 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:25:51,639 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2021-10-13 07:25:51,639 INFO L853 garLoopResultBuilder]: At program point L216(lines 182 217) the Hoare annotation is: (and (= ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0 (_ bv1 32)) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv0 32)) (bvult ~Id_MCDC_93~0 (_ bv42 32)) (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 ~Id_MCDC_93~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (bvadd |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv492 32))) (_ bv0 32))) [2021-10-13 07:25:51,640 INFO L853 garLoopResultBuilder]: At program point L204(lines 167 223) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv0 32))) (.cse1 (= (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (bvadd |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv492 32))) (_ bv0 32)))) (or (and .cse0 (not (= (bvmul (_ bv12 32) ~Id_MCDC_93~0) (_ bv504 32))) (not (= (bvmul (_ bv12 32) ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (_ bv504 32))) (bvult (bvadd (_ bv4294967295 32) ~Id_MCDC_93~0) (_ bv42 32)) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (_ bv42 32)) .cse1) (and (= ~Id_MCDC_93~0 (_ bv0 32)) .cse0 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 (_ bv0 32)) .cse1) (and .cse0 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 (_ bv1 32)) (bvult ~Id_MCDC_93~0 (_ bv42 32)) .cse1))) [2021-10-13 07:25:51,650 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:25:51,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:25:51 BoogieIcfgContainer [2021-10-13 07:25:51,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:25:51,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:25:51,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:25:51,700 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:25:51,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:15" (3/4) ... [2021-10-13 07:25:51,705 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:25:51,731 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-13 07:25:51,733 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:25:51,735 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 07:25:51,736 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:25:51,737 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:25:52,105 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:25:52,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:25:52,107 INFO L168 Benchmark]: Toolchain (without parser) took 38674.02 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 26.4 MB in the beginning and 33.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:52,107 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 50.3 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:52,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 550.18 ms. Allocated memory is still 50.3 MB. Free memory was 26.2 MB in the beginning and 26.6 MB in the end (delta: -452.5 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:52,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.68 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 23.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:52,109 INFO L168 Benchmark]: Boogie Preprocessor took 83.17 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 40.2 MB in the end (delta: -17.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:52,110 INFO L168 Benchmark]: RCFGBuilder took 1514.30 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 40.2 MB in the beginning and 44.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:52,110 INFO L168 Benchmark]: TraceAbstraction took 36018.49 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 43.7 MB in the beginning and 43.1 MB in the end (delta: 596.4 kB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:52,111 INFO L168 Benchmark]: Witness Printer took 405.21 ms. Allocated memory is still 88.1 MB. Free memory was 43.1 MB in the beginning and 33.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:52,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 50.3 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 550.18 ms. Allocated memory is still 50.3 MB. Free memory was 26.2 MB in the beginning and 26.6 MB in the end (delta: -452.5 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.68 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 23.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.17 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 40.2 MB in the end (delta: -17.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1514.30 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 40.2 MB in the beginning and 44.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 36018.49 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 43.7 MB in the beginning and 43.1 MB in the end (delta: 596.4 kB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. * Witness Printer took 405.21 ms. Allocated memory is still 88.1 MB. Free memory was 43.1 MB in the beginning and 33.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 193]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35878.1ms, OverallIterations: 5, TraceHistogramMax: 15, EmptinessCheckTime: 42.7ms, AutomataDifference: 4012.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 614.5ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 375 SDslu, 217 SDs, 0 SdLazy, 577 SolverSat, 148 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2244.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1003 GetRequests, 910 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 4989.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=4, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68.5ms AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 97 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2328 FormulaSimplificationTreeSizeReduction, 265.6ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 342.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 481.3ms SsaConstructionTime, 8447.2ms SatisfiabilityAnalysisTime, 17488.7ms InterpolantComputationTime, 495 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 968 ConstructedInterpolants, 236 QuantifiedInterpolants, 10638 SizeOfPredicates, 49 NumberOfNonLiveVariables, 2601 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 3293/4512 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: 133]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: (((Id_MCDC_89____CPAchecker_TMP_1 == 1bv32 && Id_MCDC_89__Id_MCDC_95 == 0bv32) && ~bvult32(Id_MCDC_93, 42bv32)) && Id_MCDC_89__Id_MCDC_96 == Id_MCDC_93) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32 - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((((Id_MCDC_89__Id_MCDC_95 == 0bv32 && !(~bvmul32(12bv32, Id_MCDC_93) == 504bv32)) && !(~bvmul32(12bv32, Id_MCDC_89__Id_MCDC_96) == 504bv32)) && ~bvult32(~bvadd64(4294967295bv32, Id_MCDC_93), 42bv32)) && ~bvult32(~bvadd64(4294967295bv32, Id_MCDC_89__Id_MCDC_96), 42bv32)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32) || (((Id_MCDC_93 == 0bv32 && Id_MCDC_89__Id_MCDC_95 == 0bv32) && Id_MCDC_89__Id_MCDC_96 == 0bv32) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32)) || (((Id_MCDC_89__Id_MCDC_95 == 0bv32 && Id_MCDC_89__Id_MCDC_96 == 1bv32) && ~bvult32(Id_MCDC_93, 42bv32)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:25:52,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_308d8559-f44d-4cf7-9b12-db7c4042915e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...