./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/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 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 ....................................................................................................................................................................................................................................................................................................................................................................... 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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/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 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:44:32,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:32,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:32,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:32,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:32,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:32,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:32,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:32,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:32,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:32,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:32,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:32,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:32,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:32,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:32,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:32,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:32,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:32,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:32,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:32,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:32,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:32,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:32,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:32,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:32,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:32,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:32,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:32,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:32,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:32,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:32,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:32,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:32,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:32,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:32,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:32,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:32,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:32,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:32,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:32,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:32,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:44:32,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:32,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:32,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:32,502 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:32,502 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:32,502 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:32,502 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:44:32,503 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:32,503 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:32,503 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:44:32,510 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:44:32,511 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:32,511 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:44:32,511 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:44:32,512 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:44:32,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:32,513 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:32,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:44:32,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:32,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:32,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:32,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:32,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:32,514 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:32,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:32,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:32,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:32,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:32,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:32,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:32,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:32,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:32,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:32,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:32,520 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:44:32,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:44:32,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:32,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:32,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:32,521 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 [2021-10-13 06:44:32,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:32,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:32,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:32,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:32,893 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:32,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-10-13 06:44:32,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data/202b0b0e2/4b8e47d0d5a94d4facfb6ab616d87817/FLAG3436fff48 [2021-10-13 06:44:33,470 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:33,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-10-13 06:44:33,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data/202b0b0e2/4b8e47d0d5a94d4facfb6ab616d87817/FLAG3436fff48 [2021-10-13 06:44:33,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data/202b0b0e2/4b8e47d0d5a94d4facfb6ab616d87817 [2021-10-13 06:44:33,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:33,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:33,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:33,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:33,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:33,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6b1283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:33, skipping insertion in model container [2021-10-13 06:44:33,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:33" (1/1) ... [2021-10-13 06:44:33,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:33,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:34,087 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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-10-13 06:44:34,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:34,103 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:34,169 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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-10-13 06:44:34,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:34,185 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:34,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34 WrapperNode [2021-10-13 06:44:34,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:34,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:34,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:34,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:34,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:34,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:34,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:34,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:34,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:34,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:34,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:34,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:34,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (1/1) ... [2021-10-13 06:44:34,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:34,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:34,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:34,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 06:44:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-13 06:44:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:44:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 06:44:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:44:35,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:35,338 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 06:44:35,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:35 BoogieIcfgContainer [2021-10-13 06:44:35,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:35,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:35,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:35,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:35,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:33" (1/3) ... [2021-10-13 06:44:35,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd7d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:35, skipping insertion in model container [2021-10-13 06:44:35,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:34" (2/3) ... [2021-10-13 06:44:35,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bd7d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:35, skipping insertion in model container [2021-10-13 06:44:35,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:35" (3/3) ... [2021-10-13 06:44:35,355 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2021-10-13 06:44:35,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:35,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:44:35,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:35,430 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 06:44:35,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:44:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 06:44:35,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:35,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:35,450 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:35,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:35,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1202647943, now seen corresponding path program 1 times [2021-10-13 06:44:35,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:35,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223604308] [2021-10-13 06:44:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:35,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:35,912 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 06:44:35,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:35,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223604308] [2021-10-13 06:44:35,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223604308] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:35,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:35,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:44:35,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317677378] [2021-10-13 06:44:35,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:44:35,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:44:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:35,956 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:36,023 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2021-10-13 06:44:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:36,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 06:44:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:36,033 INFO L225 Difference]: With dead ends: 27 [2021-10-13 06:44:36,034 INFO L226 Difference]: Without dead ends: 16 [2021-10-13 06:44:36,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:44:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-13 06:44:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2021-10-13 06:44:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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 06:44:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-13 06:44:36,066 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-10-13 06:44:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:36,066 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-13 06:44:36,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 06:44:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 06:44:36,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:36,068 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:36,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:44:36,069 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:36,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:36,072 INFO L82 PathProgramCache]: Analyzing trace with hash 507664458, now seen corresponding path program 1 times [2021-10-13 06:44:36,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:36,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22409365] [2021-10-13 06:44:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:36,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:36,333 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 06:44:36,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:36,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22409365] [2021-10-13 06:44:36,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22409365] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:44:36,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816576303] [2021-10-13 06:44:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:36,334 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:36,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:36,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:36,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:44:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:36,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 06:44:36,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:36,721 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 06:44:36,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:36,807 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 06:44:36,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816576303] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:36,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1420987015] [2021-10-13 06:44:36,835 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-13 06:44:36,836 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 06:44:36,843 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 06:44:36,848 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 06:44:36,849 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 06:44:36,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,901 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:36,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-13 06:44:36,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 06:44:36,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:36,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-13 06:44:36,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-10-13 06:44:36,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:36,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:36,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:36,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:37,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:37,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:37,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:37,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:37,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:37,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:37,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 06:44:37,361 INFO L354 Elim1Store]: treesize reduction 456, result has 6.4 percent of original size [2021-10-13 06:44:37,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 135 treesize of output 134 [2021-10-13 06:44:37,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:37,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-13 06:44:37,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:37,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-13 06:44:37,401 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 06:44:37,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:44:37,479 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:37,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:37,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 321 [2021-10-13 06:44:37,502 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 06:44:37,502 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:355, output treesize:321 [2021-10-13 06:44:37,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:37,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:37,725 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_19| 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 06:44:37,729 INFO L168 Benchmark]: Toolchain (without parser) took 3930.56 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 95.1 MB in the beginning and 99.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:37,729 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 125.8 MB. Free memory is still 79.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:44:37,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.01 ms. Allocated memory is still 125.8 MB. Free memory was 95.1 MB in the beginning and 92.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:37,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.34 ms. Allocated memory is still 125.8 MB. Free memory was 92.6 MB in the beginning and 89.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:37,731 INFO L168 Benchmark]: Boogie Preprocessor took 83.75 ms. Allocated memory is still 125.8 MB. Free memory was 89.3 MB in the beginning and 86.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:37,732 INFO L168 Benchmark]: RCFGBuilder took 983.23 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 86.1 MB in the beginning and 84.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:37,733 INFO L168 Benchmark]: TraceAbstraction took 2384.67 ms. Allocated memory is still 151.0 MB. Free memory was 84.7 MB in the beginning and 99.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:37,736 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 125.8 MB. Free memory is still 79.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 387.01 ms. Allocated memory is still 125.8 MB. Free memory was 95.1 MB in the beginning and 92.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.34 ms. Allocated memory is still 125.8 MB. Free memory was 92.6 MB in the beginning and 89.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.75 ms. Allocated memory is still 125.8 MB. Free memory was 89.3 MB in the beginning and 86.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 983.23 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 86.1 MB in the beginning and 84.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2384.67 ms. Allocated memory is still 151.0 MB. Free memory was 84.7 MB in the beginning and 99.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_19| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_19|: 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 06:44:37,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/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 06:44:40,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:40,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:40,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:40,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:40,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:40,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:40,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:40,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:40,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:40,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:40,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:40,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:40,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:40,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:40,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:40,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:40,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:40,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:40,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:40,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:40,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:40,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:40,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:40,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:40,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:40,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:40,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:40,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:40,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:40,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:40,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:40,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:40,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:40,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:40,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:40,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:40,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:40,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:40,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:40,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:40,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:44:40,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:40,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:40,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:40,555 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:40,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:40,556 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:40,556 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:40,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:40,556 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:40,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:40,559 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:40,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:40,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:40,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:40,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:40,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:40,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:40,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:44:40,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:44:40,561 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:40,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:40,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:40,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:40,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:40,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:44:40,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:40,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:40,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:40,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:40,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:40,563 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:44:40,563 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:40,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:40,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:40,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:40,564 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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 289dd888f37cc0d6d55c6d2fce6d1543cb91b245 [2021-10-13 06:44:40,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:40,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:40,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:40,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:40,973 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:40,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-10-13 06:44:41,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data/473678e78/e9dca3441f234443aa680fd3fecb94e6/FLAG123135886 [2021-10-13 06:44:41,650 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:41,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2021-10-13 06:44:41,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data/473678e78/e9dca3441f234443aa680fd3fecb94e6/FLAG123135886 [2021-10-13 06:44:41,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/data/473678e78/e9dca3441f234443aa680fd3fecb94e6 [2021-10-13 06:44:41,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:42,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:42,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:42,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:42,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:42,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:41" (1/1) ... [2021-10-13 06:44:42,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3484abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42, skipping insertion in model container [2021-10-13 06:44:42,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:41" (1/1) ... [2021-10-13 06:44:42,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:42,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:42,323 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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-10-13 06:44:42,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:42,357 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:42,450 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_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2021-10-13 06:44:42,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:42,470 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:42,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42 WrapperNode [2021-10-13 06:44:42,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:42,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:42,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:42,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:42,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:42,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:42,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:42,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:42,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:42,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:42,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:42,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:42,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (1/1) ... [2021-10-13 06:44:42,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:42,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:42,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 06:44:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-13 06:44:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:44:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-13 06:44:42,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 06:44:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:42,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:44:43,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:43,814 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 06:44:43,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:43 BoogieIcfgContainer [2021-10-13 06:44:43,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:43,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:43,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:43,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:43,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:41" (1/3) ... [2021-10-13 06:44:43,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d5d9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:43, skipping insertion in model container [2021-10-13 06:44:43,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:42" (2/3) ... [2021-10-13 06:44:43,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d5d9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:43, skipping insertion in model container [2021-10-13 06:44:43,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:43" (3/3) ... [2021-10-13 06:44:43,825 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2021-10-13 06:44:43,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:43,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:44:43,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:43,884 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 06:44:43,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:44:43,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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 06:44:43,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:44:43,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:43,903 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:43,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash 176653045, now seen corresponding path program 1 times [2021-10-13 06:44:43,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:43,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474111475] [2021-10-13 06:44:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:43,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:43,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:43,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:43,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:44:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:44,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:44:44,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:44,315 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 06:44:44,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:44,362 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 06:44:44,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:44,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474111475] [2021-10-13 06:44:44,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474111475] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:44,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:44,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 06:44:44,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554077317] [2021-10-13 06:44:44,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:44:44,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:44,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:44:44,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:44:44,389 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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 06:44:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:44,534 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-10-13 06:44:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:44:44,536 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 8 [2021-10-13 06:44:44,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:44,544 INFO L225 Difference]: With dead ends: 42 [2021-10-13 06:44:44,544 INFO L226 Difference]: Without dead ends: 21 [2021-10-13 06:44:44,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:44:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-13 06:44:44,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-13 06:44:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 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 06:44:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-13 06:44:44,577 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2021-10-13 06:44:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:44,578 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-13 06:44:44,578 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 06:44:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-13 06:44:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 06:44:44,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:44,579 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:44,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:44,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:44:44,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:44,797 INFO L82 PathProgramCache]: Analyzing trace with hash 921588373, now seen corresponding path program 1 times [2021-10-13 06:44:44,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:44,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307566951] [2021-10-13 06:44:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:44,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:44,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:44,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:44,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:44:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:45,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:44:45,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:45,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:45,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:45,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307566951] [2021-10-13 06:44:45,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307566951] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:45,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1380385732] [2021-10-13 06:44:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:45,385 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:45,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:44:45,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:44:45,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-13 06:44:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:45,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:44:45,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:45,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:45,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1380385732] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:45,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931162432] [2021-10-13 06:44:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:45,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:45,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:45,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:45,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 06:44:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:46,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 06:44:46,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:46,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:46,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931162432] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:46,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:44:46,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 8] total 14 [2021-10-13 06:44:46,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031532229] [2021-10-13 06:44:46,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 06:44:46,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:46,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 06:44:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-13 06:44:46,580 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:47,185 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-10-13 06:44:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 06:44:47,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 06:44:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:47,187 INFO L225 Difference]: With dead ends: 44 [2021-10-13 06:44:47,187 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 06:44:47,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 331.1ms TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-10-13 06:44:47,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 06:44:47,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-13 06:44:47,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 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 06:44:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-10-13 06:44:47,195 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 18 [2021-10-13 06:44:47,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:47,196 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-10-13 06:44:47,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:44:47,196 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-10-13 06:44:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 06:44:47,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:47,197 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:47,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:47,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:47,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:47,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:47,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:47,799 INFO L82 PathProgramCache]: Analyzing trace with hash 584112597, now seen corresponding path program 2 times [2021-10-13 06:44:47,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:47,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493008591] [2021-10-13 06:44:47,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:44:47,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:47,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:47,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:47,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 06:44:49,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:44:49,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:44:49,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:44:49,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:49,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:49,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:49,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493008591] [2021-10-13 06:44:49,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493008591] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:49,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [912337629] [2021-10-13 06:44:49,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:44:49,959 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:49,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:44:49,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:44:49,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-13 06:44:50,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:44:50,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:44:50,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:44:50,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:51,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:51,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [912337629] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:51,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837207428] [2021-10-13 06:44:51,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 06:44:51,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:51,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:51,322 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:44:51,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 06:44:51,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 06:44:51,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:44:51,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 06:44:51,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:52,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:52,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837207428] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:52,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:44:52,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 12] total 26 [2021-10-13 06:44:52,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861943847] [2021-10-13 06:44:52,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 06:44:52,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:44:52,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 06:44:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-10-13 06:44:52,712 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 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 06:44:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:54,211 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2021-10-13 06:44:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 06:44:54,212 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 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 38 [2021-10-13 06:44:54,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:54,214 INFO L225 Difference]: With dead ends: 84 [2021-10-13 06:44:54,214 INFO L226 Difference]: Without dead ends: 81 [2021-10-13 06:44:54,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1104.9ms TimeCoverageRelationStatistics Valid=519, Invalid=1203, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 06:44:54,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-13 06:44:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-10-13 06:44:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 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 06:44:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2021-10-13 06:44:54,234 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 38 [2021-10-13 06:44:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:54,235 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2021-10-13 06:44:54,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 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 06:44:54,235 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2021-10-13 06:44:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-13 06:44:54,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:54,238 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:54,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:54,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 06:44:54,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-13 06:44:54,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:44:54,848 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:54,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1711175595, now seen corresponding path program 3 times [2021-10-13 06:44:54,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:44:54,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411914878] [2021-10-13 06:44:54,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 06:44:54,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:44:54,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:44:54,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:44:54,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 06:44:56,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 06:44:56,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:44:56,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 06:44:56,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:44:57,225 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:44:57,226 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 06:44:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-13 06:44:57,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:44:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-13 06:44:59,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:44:59,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411914878] [2021-10-13 06:44:59,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411914878] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:44:59,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2020475277] [2021-10-13 06:44:59,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 06:44:59,384 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 06:44:59,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 06:44:59,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 06:44:59,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-13 06:45:00,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 06:45:00,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:45:00,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 06:45:00,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:01,362 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:01,362 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 06:45:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-13 06:45:01,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-13 06:45:03,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2020475277] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:03,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756585570] [2021-10-13 06:45:03,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 06:45:03,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:45:03,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:45:03,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:45:03,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 06:45:03,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 06:45:03,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 06:45:03,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 06:45:03,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:04,559 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 06:45:04,559 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 06:45:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-13 06:45:04,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-10-13 06:45:06,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756585570] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 06:45:06,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 06:45:06,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 14 [2021-10-13 06:45:06,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012467680] [2021-10-13 06:45:06,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 06:45:06,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:45:06,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 06:45:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-13 06:45:06,111 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:45:06,717 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-10-13 06:45:06,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 06:45:06,720 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-13 06:45:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:45:06,721 INFO L225 Difference]: With dead ends: 79 [2021-10-13 06:45:06,721 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:45:06,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 639.7ms TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-10-13 06:45:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:45:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:45:06,722 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 06:45:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:45:06,723 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2021-10-13 06:45:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:45:06,723 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:45:06,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:45:06,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:45:06,726 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:45:06,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-13 06:45:06,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 06:45:07,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 06:45:07,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:45:07,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:45:07,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:45:07,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:45:07,595 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 236) no Hoare annotation was computed. [2021-10-13 06:45:07,595 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:45:07,595 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 208) no Hoare annotation was computed. [2021-10-13 06:45:07,595 INFO L857 garLoopResultBuilder]: For program point L221(line 221) no Hoare annotation was computed. [2021-10-13 06:45:07,595 INFO L857 garLoopResultBuilder]: For program point L219(lines 219 227) no Hoare annotation was computed. [2021-10-13 06:45:07,595 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 229) no Hoare annotation was computed. [2021-10-13 06:45:07,595 INFO L857 garLoopResultBuilder]: For program point L180(lines 180 234) no Hoare annotation was computed. [2021-10-13 06:45:07,595 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 207) no Hoare annotation was computed. [2021-10-13 06:45:07,596 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 06:45:07,596 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:45:07,596 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 06:45:07,596 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 221) no Hoare annotation was computed. [2021-10-13 06:45:07,596 INFO L853 garLoopResultBuilder]: At program point L202(lines 167 235) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv0 32))) (.cse2 (bvult ~Id_MCDC_93~0 (_ bv42 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 (= ~Id_MCDC_93~0 (_ bv0 32)) .cse0 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 (_ bv0 32)) .cse1) (and .cse0 .cse2 (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 .cse0 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 (_ bv1 32)) .cse2 .cse1))) [2021-10-13 06:45:07,596 INFO L860 garLoopResultBuilder]: At program point L233(lines 133 237) the Hoare annotation is: true [2021-10-13 06:45:07,601 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:45:07,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:45:07 BoogieIcfgContainer [2021-10-13 06:45:07,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:45:07,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:45:07,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:45:07,616 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:45:07,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:43" (3/4) ... [2021-10-13 06:45:07,623 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:45:07,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-13 06:45:07,650 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 06:45:07,651 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 06:45:07,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:45:07,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:45:07,903 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:45:07,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:45:07,905 INFO L168 Benchmark]: Toolchain (without parser) took 25904.21 ms. Allocated memory was 54.5 MB in the beginning and 121.6 MB in the end (delta: 67.1 MB). Free memory was 31.6 MB in the beginning and 76.0 MB in the end (delta: -44.4 MB). Peak memory consumption was 68.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:07,905 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:45:07,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 42.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:07,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.22 ms. Allocated memory is still 67.1 MB. Free memory was 42.2 MB in the beginning and 38.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:07,907 INFO L168 Benchmark]: Boogie Preprocessor took 96.78 ms. Allocated memory is still 67.1 MB. Free memory was 38.7 MB in the beginning and 35.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:07,907 INFO L168 Benchmark]: RCFGBuilder took 1160.10 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 35.1 MB in the beginning and 48.5 MB in the end (delta: -13.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:07,908 INFO L168 Benchmark]: TraceAbstraction took 23796.27 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 48.1 MB in the beginning and 82.9 MB in the end (delta: -34.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:07,908 INFO L168 Benchmark]: Witness Printer took 288.16 ms. Allocated memory is still 121.6 MB. Free memory was 82.9 MB in the beginning and 76.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:07,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 467.78 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 42.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.22 ms. Allocated memory is still 67.1 MB. Free memory was 42.2 MB in the beginning and 38.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.78 ms. Allocated memory is still 67.1 MB. Free memory was 38.7 MB in the beginning and 35.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1160.10 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 35.1 MB in the beginning and 48.5 MB in the end (delta: -13.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23796.27 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 48.1 MB in the beginning and 82.9 MB in the end (delta: -34.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. * Witness Printer took 288.16 ms. Allocated memory is still 121.6 MB. Free memory was 82.9 MB in the beginning and 76.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 54.5 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: 221]: 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: 23724.0ms, OverallIterations: 4, TraceHistogramMax: 15, EmptinessCheckTime: 13.3ms, AutomataDifference: 2904.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 259.9ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 266 SDslu, 104 SDs, 0 SdLazy, 504 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1517.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 833 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2143.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=3, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 21 NumberOfFragments, 72 HoareAnnotationTreeSize, 2 FomulaSimplifications, 547 FormulaSimplificationTreeSizeReduction, 88.9ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 56 FormulaSimplificationTreeSizeReductionInter, 166.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 398.4ms SsaConstructionTime, 5862.8ms SatisfiabilityAnalysisTime, 10520.5ms InterpolantComputationTime, 410 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 800 ConstructedInterpolants, 198 QuantifiedInterpolants, 8886 SizeOfPredicates, 47 NumberOfNonLiveVariables, 2400 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 2535/3606 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: 167]: Loop Invariant Derived loop invariant: ((((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 && ~bvult32(Id_MCDC_93, 42bv32)) && !(~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_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) - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 06:45:07,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e4e794-d198-48ae-9f7f-ef44f6854c3f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...