./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label16.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_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/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_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/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_fe7d088d-751e-456a-8ce0-7faeb359834c/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 f33fbcbeea92375203458d523a51a600f74086f3 ....................................................................................................................................................................................................................................................................................................................................................... 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_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/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_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/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_fe7d088d-751e-456a-8ce0-7faeb359834c/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 f33fbcbeea92375203458d523a51a600f74086f3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:45:34,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:45:34,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:45:34,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:45:34,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:45:34,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:45:34,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:45:34,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:45:34,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:45:34,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:45:34,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:45:34,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:45:34,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:45:34,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:45:34,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:45:34,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:45:34,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:45:34,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:45:34,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:45:34,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:45:34,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:45:34,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:45:34,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:45:34,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:45:34,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:45:34,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:45:34,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:45:34,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:45:34,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:45:34,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:45:34,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:45:34,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:45:34,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:45:34,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:45:34,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:45:34,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:45:34,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:45:34,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:45:34,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:45:34,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:45:34,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:45:34,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:45:34,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:45:34,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:45:34,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:45:34,927 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:45:34,927 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:45:34,927 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:45:34,928 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:45:34,928 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:45:34,928 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:45:34,929 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:45:34,929 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:45:34,929 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:45:34,930 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:45:34,930 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:45:34,930 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:45:34,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:45:34,931 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:45:34,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:45:34,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:45:34,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:45:34,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:45:34,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:45:34,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:45:34,933 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:45:34,934 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:45:34,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:45:34,934 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:45:34,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:45:34,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:45:34,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:45:34,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:45:34,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:45:34,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:45:34,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:45:34,941 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:45:34,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:45:34,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:45:34,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:45:34,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:45:34,942 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_fe7d088d-751e-456a-8ce0-7faeb359834c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f33fbcbeea92375203458d523a51a600f74086f3 [2021-10-13 07:45:35,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:45:35,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:45:35,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:45:35,290 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:45:35,291 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:45:35,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem14_label16.c [2021-10-13 07:45:35,407 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data/7db0f6375/a1bd29a274d24ea68a8912cbf6c87552/FLAG22350eda5 [2021-10-13 07:45:36,023 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:45:36,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/sv-benchmarks/c/eca-rers2012/Problem14_label16.c [2021-10-13 07:45:36,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data/7db0f6375/a1bd29a274d24ea68a8912cbf6c87552/FLAG22350eda5 [2021-10-13 07:45:36,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data/7db0f6375/a1bd29a274d24ea68a8912cbf6c87552 [2021-10-13 07:45:36,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:45:36,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:45:36,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:36,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:45:36,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:45:36,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:36" (1/1) ... [2021-10-13 07:45:36,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f354e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:36, skipping insertion in model container [2021-10-13 07:45:36,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:36" (1/1) ... [2021-10-13 07:45:36,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:45:36,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:45:36,702 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_fe7d088d-751e-456a-8ce0-7faeb359834c/sv-benchmarks/c/eca-rers2012/Problem14_label16.c[4807,4820] [2021-10-13 07:45:36,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:36,977 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:45:37,028 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_fe7d088d-751e-456a-8ce0-7faeb359834c/sv-benchmarks/c/eca-rers2012/Problem14_label16.c[4807,4820] [2021-10-13 07:45:37,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:37,228 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:45:37,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37 WrapperNode [2021-10-13 07:45:37,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:37,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:45:37,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:45:37,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:45:37,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:45:37,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:45:37,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:45:37,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:45:37,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:45:37,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:45:37,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:45:37,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:45:37,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (1/1) ... [2021-10-13 07:45:37,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:45:37,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:37,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:45:37,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:45:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:45:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:45:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:45:37,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:45:54,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:45:54,340 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:45:54,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:54 BoogieIcfgContainer [2021-10-13 07:45:54,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:45:54,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:45:54,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:45:54,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:45:54,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:36" (1/3) ... [2021-10-13 07:45:54,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557168b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:54, skipping insertion in model container [2021-10-13 07:45:54,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:37" (2/3) ... [2021-10-13 07:45:54,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557168b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:54, skipping insertion in model container [2021-10-13 07:45:54,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:54" (3/3) ... [2021-10-13 07:45:54,356 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label16.c [2021-10-13 07:45:54,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:45:54,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:45:54,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:45:54,435 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:45:54,435 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:45:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:45:54,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:54,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:45:54,460 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:54,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:54,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1065578221, now seen corresponding path program 1 times [2021-10-13 07:45:54,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:54,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203765406] [2021-10-13 07:45:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:54,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:54,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:54,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203765406] [2021-10-13 07:45:54,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203765406] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:54,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:54,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:45:54,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968346038] [2021-10-13 07:45:54,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:54,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:54,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:54,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:54,744 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:54,832 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-10-13 07:45:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:54,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-13 07:45:54,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:54,844 INFO L225 Difference]: With dead ends: 23 [2021-10-13 07:45:54,845 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:45:54,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:45:54,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-13 07:45:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 07:45:54,886 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-13 07:45:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:54,886 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 07:45:54,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 07:45:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:45:54,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:54,888 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-13 07:45:54,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:45:54,890 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:54,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:54,894 INFO L82 PathProgramCache]: Analyzing trace with hash 691264117, now seen corresponding path program 1 times [2021-10-13 07:45:54,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:54,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927117525] [2021-10-13 07:45:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:54,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:55,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:55,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927117525] [2021-10-13 07:45:55,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927117525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:45:55,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033398743] [2021-10-13 07:45:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:55,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:45:55,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:55,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:45:55,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:45:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:55,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:45:55,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:46:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:46:34,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:20,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:50:20,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35332869] [2021-10-13 07:50:20,525 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:50:20,526 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:50:20,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:50:20,538 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:50:20,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:50:20,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:20,578 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:50:20,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:20,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:50:20,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:50:20,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:20,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:50:20,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-13 07:50:20,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:50:20,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:50:20,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:50:20,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:50:20,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:20,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:50:20,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:20,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:50:20,666 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:50:20,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:50:20,707 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:20,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:50:20,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-13 07:50:20,713 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:50:20,714 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:149, output treesize:152 [2021-10-13 07:50:20,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 07:50:20,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:50:20,932 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_10| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:50:20,936 INFO L168 Benchmark]: Toolchain (without parser) took 284656.64 ms. Allocated memory was 94.4 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 56.1 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 184.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:20,937 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 65.1 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:50:20,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 948.28 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 55.9 MB in the beginning and 76.8 MB in the end (delta: -20.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:20,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.77 ms. Allocated memory is still 123.7 MB. Free memory was 76.8 MB in the beginning and 67.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:20,940 INFO L168 Benchmark]: Boogie Preprocessor took 134.82 ms. Allocated memory is still 123.7 MB. Free memory was 67.2 MB in the beginning and 60.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:20,941 INFO L168 Benchmark]: RCFGBuilder took 16820.34 ms. Allocated memory was 123.7 MB in the beginning and 681.6 MB in the end (delta: 557.8 MB). Free memory was 60.8 MB in the beginning and 329.6 MB in the end (delta: -268.8 MB). Peak memory consumption was 290.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:50:20,941 INFO L168 Benchmark]: TraceAbstraction took 266588.04 ms. Allocated memory was 681.6 MB in the beginning and 1.3 GB in the end (delta: 604.0 MB). Free memory was 328.5 MB in the beginning and 1.1 GB in the end (delta: -735.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:50:20,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 65.1 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 948.28 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 55.9 MB in the beginning and 76.8 MB in the end (delta: -20.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 156.77 ms. Allocated memory is still 123.7 MB. Free memory was 76.8 MB in the beginning and 67.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 134.82 ms. Allocated memory is still 123.7 MB. Free memory was 67.2 MB in the beginning and 60.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 16820.34 ms. Allocated memory was 123.7 MB in the beginning and 681.6 MB in the end (delta: 557.8 MB). Free memory was 60.8 MB in the beginning and 329.6 MB in the end (delta: -268.8 MB). Peak memory consumption was 290.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 266588.04 ms. Allocated memory was 681.6 MB in the beginning and 1.3 GB in the end (delta: 604.0 MB). Free memory was 328.5 MB in the beginning and 1.1 GB in the end (delta: -735.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:50:21,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:50:23,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:50:23,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:50:23,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:50:23,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:50:23,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:50:23,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:50:23,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:50:23,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:50:23,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:50:23,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:50:23,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:50:23,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:50:23,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:50:23,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:50:23,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:50:23,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:50:23,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:50:23,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:50:23,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:50:23,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:50:23,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:50:23,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:50:23,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:50:23,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:50:23,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:50:23,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:50:23,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:50:23,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:50:23,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:50:23,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:50:23,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:50:23,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:50:23,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:50:23,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:50:23,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:50:23,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:50:23,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:50:23,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:50:23,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:50:23,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:50:23,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:50:24,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:50:24,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:50:24,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:50:24,061 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:50:24,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:50:24,061 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:50:24,062 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:50:24,062 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:50:24,062 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:50:24,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:50:24,065 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:50:24,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:50:24,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:50:24,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:50:24,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:50:24,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:50:24,066 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:50:24,067 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:50:24,067 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:50:24,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:50:24,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:50:24,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:50:24,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:50:24,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:50:24,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:50:24,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:50:24,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:50:24,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:50:24,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:50:24,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:50:24,070 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:50:24,070 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:50:24,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:50:24,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:50:24,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:50:24,071 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_fe7d088d-751e-456a-8ce0-7faeb359834c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f33fbcbeea92375203458d523a51a600f74086f3 [2021-10-13 07:50:24,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:50:24,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:50:24,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:50:24,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:50:24,554 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:50:24,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem14_label16.c [2021-10-13 07:50:24,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data/6ef1820e9/63c177c9b70d44348f6a2e74ee865e99/FLAG7b5f69d88 [2021-10-13 07:50:25,411 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:50:25,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/sv-benchmarks/c/eca-rers2012/Problem14_label16.c [2021-10-13 07:50:25,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data/6ef1820e9/63c177c9b70d44348f6a2e74ee865e99/FLAG7b5f69d88 [2021-10-13 07:50:25,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/data/6ef1820e9/63c177c9b70d44348f6a2e74ee865e99 [2021-10-13 07:50:25,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:50:25,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:50:25,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:50:25,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:50:25,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:50:25,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c906228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:25, skipping insertion in model container [2021-10-13 07:50:25,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:25" (1/1) ... [2021-10-13 07:50:25,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:50:25,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:50:25,996 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_fe7d088d-751e-456a-8ce0-7faeb359834c/sv-benchmarks/c/eca-rers2012/Problem14_label16.c[4807,4820] [2021-10-13 07:50:26,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:50:26,434 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:50:26,468 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_fe7d088d-751e-456a-8ce0-7faeb359834c/sv-benchmarks/c/eca-rers2012/Problem14_label16.c[4807,4820] [2021-10-13 07:50:26,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:50:26,691 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:50:26,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26 WrapperNode [2021-10-13 07:50:26,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:50:26,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:50:26,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:50:26,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:50:26,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:50:26,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:50:26,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:50:26,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:50:26,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:50:26,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:50:26,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:50:26,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:50:26,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (1/1) ... [2021-10-13 07:50:26,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:50:27,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:50:27,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:50:27,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:50:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:50:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:50:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:50:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:50:31,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:50:31,083 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:50:31,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:31 BoogieIcfgContainer [2021-10-13 07:50:31,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:50:31,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:50:31,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:50:31,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:50:31,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:50:25" (1/3) ... [2021-10-13 07:50:31,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d5c99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:31, skipping insertion in model container [2021-10-13 07:50:31,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:26" (2/3) ... [2021-10-13 07:50:31,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d5c99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:31, skipping insertion in model container [2021-10-13 07:50:31,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:31" (3/3) ... [2021-10-13 07:50:31,097 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label16.c [2021-10-13 07:50:31,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:50:31,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:50:31,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:50:31,194 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:50:31,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:50:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-13 07:50:31,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:31,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:31,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:31,257 INFO L82 PathProgramCache]: Analyzing trace with hash 291089130, now seen corresponding path program 1 times [2021-10-13 07:50:31,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:31,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612382775] [2021-10-13 07:50:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:31,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:31,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:31,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:31,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:50:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:31,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:31,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:31,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:32,166 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:32,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612382775] [2021-10-13 07:50:32,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612382775] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:32,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:32,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:50:32,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044640056] [2021-10-13 07:50:32,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:50:32,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:32,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:50:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:32,194 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:38,709 INFO L93 Difference]: Finished difference Result 850 states and 1558 transitions. [2021-10-13 07:50:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:50:38,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 46 [2021-10-13 07:50:38,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:38,731 INFO L225 Difference]: With dead ends: 850 [2021-10-13 07:50:38,731 INFO L226 Difference]: Without dead ends: 538 [2021-10-13 07:50:38,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-13 07:50:38,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-10-13 07:50:38,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.504655493482309) internal successors, (808), 537 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:38,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 808 transitions. [2021-10-13 07:50:38,841 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 808 transitions. Word has length 46 [2021-10-13 07:50:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:38,842 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 808 transitions. [2021-10-13 07:50:38,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:38,843 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 808 transitions. [2021-10-13 07:50:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-10-13 07:50:38,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:38,853 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:38,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:50:39,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:39,054 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:39,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:39,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1094230429, now seen corresponding path program 1 times [2021-10-13 07:50:39,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:39,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683662603] [2021-10-13 07:50:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:39,057 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:39,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:39,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:39,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:50:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:39,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:39,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:39,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:50:40,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:40,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683662603] [2021-10-13 07:50:40,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683662603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:40,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:40,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:50:40,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398786698] [2021-10-13 07:50:40,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:50:40,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:50:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:40,404 INFO L87 Difference]: Start difference. First operand 538 states and 808 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:46,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:50:46,309 INFO L93 Difference]: Finished difference Result 2142 states and 3224 transitions. [2021-10-13 07:50:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:50:46,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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 136 [2021-10-13 07:50:46,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:50:46,326 INFO L225 Difference]: With dead ends: 2142 [2021-10-13 07:50:46,326 INFO L226 Difference]: Without dead ends: 1606 [2021-10-13 07:50:46,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-13 07:50:46,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1250. [2021-10-13 07:50:46,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.3907125700560448) internal successors, (1737), 1249 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1737 transitions. [2021-10-13 07:50:46,431 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1737 transitions. Word has length 136 [2021-10-13 07:50:46,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:50:46,432 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1737 transitions. [2021-10-13 07:50:46,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:50:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1737 transitions. [2021-10-13 07:50:46,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-10-13 07:50:46,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:50:46,460 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:50:46,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:50:46,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:50:46,675 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:50:46,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:50:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash -887664221, now seen corresponding path program 1 times [2021-10-13 07:50:46,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:50:46,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954334462] [2021-10-13 07:50:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:50:46,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:50:46,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:50:46,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:50:46,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:50:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:50:46,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:50:46,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:50:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 07:50:47,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:50:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 07:50:49,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:50:49,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954334462] [2021-10-13 07:50:49,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954334462] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:50:49,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:50:49,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:50:49,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522489946] [2021-10-13 07:50:49,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:50:49,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:50:49,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:50:49,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:50:49,016 INFO L87 Difference]: Start difference. First operand 1250 states and 1737 transitions. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:00,325 INFO L93 Difference]: Finished difference Result 3922 states and 5419 transitions. [2021-10-13 07:51:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:51:00,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 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 289 [2021-10-13 07:51:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:00,344 INFO L225 Difference]: With dead ends: 3922 [2021-10-13 07:51:00,345 INFO L226 Difference]: Without dead ends: 2674 [2021-10-13 07:51:00,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-10-13 07:51:00,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2021-10-13 07:51:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.2813318368873925) internal successors, (3425), 2673 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3425 transitions. [2021-10-13 07:51:00,434 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3425 transitions. Word has length 289 [2021-10-13 07:51:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:00,435 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 3425 transitions. [2021-10-13 07:51:00,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3425 transitions. [2021-10-13 07:51:00,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-10-13 07:51:00,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:00,446 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:00,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:00,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:00,664 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:00,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:00,665 INFO L82 PathProgramCache]: Analyzing trace with hash 133119983, now seen corresponding path program 1 times [2021-10-13 07:51:00,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:00,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176586182] [2021-10-13 07:51:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:00,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:00,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:00,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:00,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:51:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:01,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:51:01,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-13 07:51:03,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-13 07:51:05,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:05,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176586182] [2021-10-13 07:51:05,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176586182] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:05,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:05,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:51:05,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999992948] [2021-10-13 07:51:05,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:51:05,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:05,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:51:05,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:51:05,430 INFO L87 Difference]: Start difference. First operand 2674 states and 3425 transitions. Second operand has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 5 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:12,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:12,416 INFO L93 Difference]: Finished difference Result 5582 states and 7192 transitions. [2021-10-13 07:51:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:51:12,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 5 states have internal predecessors, (331), 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 324 [2021-10-13 07:51:12,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:12,444 INFO L225 Difference]: With dead ends: 5582 [2021-10-13 07:51:12,445 INFO L226 Difference]: Without dead ends: 3030 [2021-10-13 07:51:12,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 65.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:51:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-10-13 07:51:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2674. [2021-10-13 07:51:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.1099887766554433) internal successors, (2967), 2673 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2967 transitions. [2021-10-13 07:51:12,548 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2967 transitions. Word has length 324 [2021-10-13 07:51:12,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:12,550 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2967 transitions. [2021-10-13 07:51:12,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 5 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2967 transitions. [2021-10-13 07:51:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-10-13 07:51:12,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:12,567 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:12,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:12,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:12,788 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:12,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1353253378, now seen corresponding path program 1 times [2021-10-13 07:51:12,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:12,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303648641] [2021-10-13 07:51:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:12,793 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:12,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:12,796 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:12,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:51:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:13,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:51:13,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 426 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 07:51:15,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 321 proven. 105 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 07:51:19,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:19,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303648641] [2021-10-13 07:51:19,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303648641] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:51:19,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:51:19,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-13 07:51:19,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582528854] [2021-10-13 07:51:19,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:51:19,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:19,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:51:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:51:19,383 INFO L87 Difference]: Start difference. First operand 2674 states and 2967 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:21,539 INFO L93 Difference]: Finished difference Result 5346 states and 5934 transitions. [2021-10-13 07:51:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:21,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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 456 [2021-10-13 07:51:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:21,558 INFO L225 Difference]: With dead ends: 5346 [2021-10-13 07:51:21,558 INFO L226 Difference]: Without dead ends: 2852 [2021-10-13 07:51:21,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 906 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:51:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-10-13 07:51:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2852. [2021-10-13 07:51:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2851 states have (on average 1.1038232199228342) internal successors, (3147), 2851 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 3147 transitions. [2021-10-13 07:51:21,660 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 3147 transitions. Word has length 456 [2021-10-13 07:51:21,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:21,662 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 3147 transitions. [2021-10-13 07:51:21,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 3147 transitions. [2021-10-13 07:51:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2021-10-13 07:51:21,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:21,684 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:21,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:21,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:21,901 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:21,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1310137656, now seen corresponding path program 1 times [2021-10-13 07:51:21,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:21,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269948610] [2021-10-13 07:51:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:21,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:21,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:21,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:21,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:51:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:23,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:51:23,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 900 proven. 347 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-10-13 07:51:26,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 1247 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-10-13 07:51:31,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:31,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269948610] [2021-10-13 07:51:31,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269948610] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:51:31,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:51:31,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-13 07:51:31,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994766790] [2021-10-13 07:51:31,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:51:31,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:31,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:51:31,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:51:31,254 INFO L87 Difference]: Start difference. First operand 2852 states and 3147 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:35,029 INFO L93 Difference]: Finished difference Result 5702 states and 6367 transitions. [2021-10-13 07:51:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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 637 [2021-10-13 07:51:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:35,047 INFO L225 Difference]: With dead ends: 5702 [2021-10-13 07:51:35,047 INFO L226 Difference]: Without dead ends: 3208 [2021-10-13 07:51:35,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1272 GetRequests, 1269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:51:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-10-13 07:51:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3030. [2021-10-13 07:51:35,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3029 states have (on average 1.0990425883129746) internal successors, (3329), 3029 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3329 transitions. [2021-10-13 07:51:35,130 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3329 transitions. Word has length 637 [2021-10-13 07:51:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:35,132 INFO L470 AbstractCegarLoop]: Abstraction has 3030 states and 3329 transitions. [2021-10-13 07:51:35,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3329 transitions. [2021-10-13 07:51:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2021-10-13 07:51:35,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:35,163 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:35,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:35,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:35,374 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:35,374 INFO L82 PathProgramCache]: Analyzing trace with hash -118498993, now seen corresponding path program 1 times [2021-10-13 07:51:35,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:35,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54029878] [2021-10-13 07:51:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:35,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:35,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:35,379 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:35,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:51:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:36,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:51:36,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 1056 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-10-13 07:51:38,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 1056 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-10-13 07:51:40,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:51:40,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54029878] [2021-10-13 07:51:40,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54029878] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:40,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:40,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:51:40,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211120015] [2021-10-13 07:51:40,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:51:40,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:51:40,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:51:40,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:40,497 INFO L87 Difference]: Start difference. First operand 3030 states and 3329 transitions. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:44,357 INFO L93 Difference]: Finished difference Result 7126 states and 7832 transitions. [2021-10-13 07:51:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:51:44,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 772 [2021-10-13 07:51:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:44,390 INFO L225 Difference]: With dead ends: 7126 [2021-10-13 07:51:44,390 INFO L226 Difference]: Without dead ends: 4276 [2021-10-13 07:51:44,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1540 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-10-13 07:51:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4098. [2021-10-13 07:51:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.0671222845984867) internal successors, (4372), 4097 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4372 transitions. [2021-10-13 07:51:44,517 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4372 transitions. Word has length 772 [2021-10-13 07:51:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:44,518 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4372 transitions. [2021-10-13 07:51:44,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4372 transitions. [2021-10-13 07:51:44,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2021-10-13 07:51:44,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:44,531 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:44,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:44,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:44,744 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:44,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1496087324, now seen corresponding path program 1 times [2021-10-13 07:51:44,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:44,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889614799] [2021-10-13 07:51:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:44,750 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:44,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:44,753 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:44,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:51:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:46,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:51:46,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 900 proven. 707 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-13 07:51:57,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1427 proven. 180 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-13 07:52:18,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:52:18,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889614799] [2021-10-13 07:52:18,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889614799] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:52:18,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [690292963] [2021-10-13 07:52:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:18,937 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:52:18,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:52:18,945 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:52:18,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-13 07:52:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:24,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:52:24,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1204 proven. 193 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2021-10-13 07:52:28,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1204 proven. 193 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2021-10-13 07:52:32,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [690292963] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:52:32,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551764851] [2021-10-13 07:52:32,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:32,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:52:32,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:32,435 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:52:32,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 07:52:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:38,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:52:38,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1188 proven. 93 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-10-13 07:52:43,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1188 proven. 93 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-10-13 07:52:48,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551764851] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:52:48,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:52:48,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 6, 6, 4, 4] total 25 [2021-10-13 07:52:48,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079057532] [2021-10-13 07:52:48,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 07:52:48,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:52:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 07:52:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-10-13 07:52:48,659 INFO L87 Difference]: Start difference. First operand 4098 states and 4372 transitions. Second operand has 25 states, 25 states have (on average 67.12) internal successors, (1678), 25 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:04,761 INFO L93 Difference]: Finished difference Result 9113 states and 9684 transitions. [2021-10-13 07:53:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 07:53:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 67.12) internal successors, (1678), 25 states have internal predecessors, (1678), 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 790 [2021-10-13 07:53:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:04,792 INFO L225 Difference]: With dead ends: 9113 [2021-10-13 07:53:04,792 INFO L226 Difference]: Without dead ends: 4453 [2021-10-13 07:53:04,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4768 GetRequests, 4722 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 2809.1ms TimeCoverageRelationStatistics Valid=514, Invalid=1742, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 07:53:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2021-10-13 07:53:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 3363. [2021-10-13 07:53:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 1.0431290898274836) internal successors, (3507), 3362 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 3507 transitions. [2021-10-13 07:53:04,888 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 3507 transitions. Word has length 790 [2021-10-13 07:53:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:04,890 INFO L470 AbstractCegarLoop]: Abstraction has 3363 states and 3507 transitions. [2021-10-13 07:53:04,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 67.12) internal successors, (1678), 25 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 3507 transitions. [2021-10-13 07:53:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2021-10-13 07:53:04,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:04,921 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:04,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:05,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:05,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:05,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:05,523 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:53:05,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:05,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1862480390, now seen corresponding path program 1 times [2021-10-13 07:53:05,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:05,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349394229] [2021-10-13 07:53:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:05,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:05,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:05,529 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:05,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:53:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:11,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:53:11,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 1884 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-13 07:53:14,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 1267 proven. 44 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-10-13 07:53:20,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:20,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349394229] [2021-10-13 07:53:20,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349394229] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:20,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [253905492] [2021-10-13 07:53:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:20,048 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:20,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:53:20,049 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:53:20,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-13 07:53:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:28,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:53:28,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-10-13 07:53:30,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2021-10-13 07:53:32,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [253905492] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:32,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:53:32,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6, 5] total 12 [2021-10-13 07:53:32,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745741216] [2021-10-13 07:53:32,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:53:32,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:32,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:53:32,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:53:32,128 INFO L87 Difference]: Start difference. First operand 3363 states and 3507 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:34,382 INFO L93 Difference]: Finished difference Result 3721 states and 3868 transitions. [2021-10-13 07:53:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:53:34,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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 867 [2021-10-13 07:53:34,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:34,405 INFO L225 Difference]: With dead ends: 3721 [2021-10-13 07:53:34,406 INFO L226 Difference]: Without dead ends: 3541 [2021-10-13 07:53:34,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3464 GetRequests, 3454 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 371.9ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:53:34,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-10-13 07:53:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3363. [2021-10-13 07:53:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 1.0401546698393813) internal successors, (3497), 3362 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 3497 transitions. [2021-10-13 07:53:34,487 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 3497 transitions. Word has length 867 [2021-10-13 07:53:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:34,489 INFO L470 AbstractCegarLoop]: Abstraction has 3363 states and 3497 transitions. [2021-10-13 07:53:34,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:53:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 3497 transitions. [2021-10-13 07:53:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2021-10-13 07:53:34,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:34,506 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:34,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:34,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:34,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:34,932 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:53:34,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:34,933 INFO L82 PathProgramCache]: Analyzing trace with hash -773229095, now seen corresponding path program 1 times [2021-10-13 07:53:34,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:34,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021134262] [2021-10-13 07:53:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:34,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:34,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:34,939 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:34,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:53:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:41,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:53:41,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2922 backedges. 351 proven. 2200 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-13 07:53:45,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2922 backedges. 1877 proven. 101 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-10-13 07:53:52,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:52,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021134262] [2021-10-13 07:53:52,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021134262] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:53:52,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [433255103] [2021-10-13 07:53:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:52,734 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:52,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:53:52,735 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:53:52,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-13 07:54:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:02,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:54:02,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2922 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 2571 trivial. 0 not checked. [2021-10-13 07:54:05,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2922 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 2571 trivial. 0 not checked. [2021-10-13 07:54:07,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [433255103] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:07,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:54:07,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 6] total 13 [2021-10-13 07:54:07,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088250393] [2021-10-13 07:54:07,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:54:07,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:54:07,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:54:07,217 INFO L87 Difference]: Start difference. First operand 3363 states and 3497 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:09,795 INFO L93 Difference]: Finished difference Result 6919 states and 7200 transitions. [2021-10-13 07:54:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:54:09,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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 962 [2021-10-13 07:54:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:09,798 INFO L225 Difference]: With dead ends: 6919 [2021-10-13 07:54:09,799 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:54:09,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3846 GetRequests, 3834 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 487.0ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:54:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:54:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:54:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:54:09,805 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 962 [2021-10-13 07:54:09,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:09,806 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:54:09,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:09,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:54:09,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:54:09,811 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:54:09,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:10,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-10-13 07:54:10,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:54:10,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:54:10,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:54:10,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:54:10,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:54:13,367 INFO L857 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-10-13 07:54:13,368 INFO L857 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-10-13 07:54:13,368 INFO L857 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-10-13 07:54:13,368 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-10-13 07:54:13,368 INFO L857 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-10-13 07:54:13,368 INFO L857 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,368 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,368 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,368 INFO L857 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,369 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,370 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-10-13 07:54:13,370 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-10-13 07:54:13,370 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-10-13 07:54:13,370 INFO L857 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-10-13 07:54:13,370 INFO L857 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-10-13 07:54:13,370 INFO L857 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-10-13 07:54:13,370 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-10-13 07:54:13,370 INFO L857 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-10-13 07:54:13,370 INFO L857 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-10-13 07:54:13,371 INFO L857 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,371 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,371 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,371 INFO L857 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-10-13 07:54:13,371 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-13 07:54:13,371 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-13 07:54:13,371 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-13 07:54:13,371 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-10-13 07:54:13,372 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-10-13 07:54:13,372 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-10-13 07:54:13,372 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,372 INFO L857 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,373 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,373 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-10-13 07:54:13,373 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-10-13 07:54:13,373 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-13 07:54:13,373 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-10-13 07:54:13,374 INFO L857 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-10-13 07:54:13,374 INFO L857 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-10-13 07:54:13,374 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-10-13 07:54:13,374 INFO L857 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-10-13 07:54:13,374 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,375 INFO L857 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,375 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,375 INFO L857 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-10-13 07:54:13,375 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-10-13 07:54:13,376 INFO L857 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-10-13 07:54:13,376 INFO L857 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-10-13 07:54:13,376 INFO L857 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-10-13 07:54:13,376 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-10-13 07:54:13,376 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-10-13 07:54:13,376 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-10-13 07:54:13,376 INFO L857 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,376 INFO L857 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,377 INFO L857 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,377 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-10-13 07:54:13,377 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-10-13 07:54:13,377 INFO L857 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-10-13 07:54:13,377 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-13 07:54:13,377 INFO L857 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-10-13 07:54:13,377 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-10-13 07:54:13,377 INFO L857 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-10-13 07:54:13,378 INFO L857 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-10-13 07:54:13,378 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-10-13 07:54:13,378 INFO L857 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,378 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,378 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,379 INFO L857 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-10-13 07:54:13,379 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-13 07:54:13,379 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-10-13 07:54:13,379 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-10-13 07:54:13,379 INFO L857 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-10-13 07:54:13,380 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-10-13 07:54:13,380 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-10-13 07:54:13,380 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:54:13,380 INFO L857 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,380 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,381 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,381 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-10-13 07:54:13,381 INFO L857 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-10-13 07:54:13,381 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-13 07:54:13,381 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-13 07:54:13,382 INFO L857 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-10-13 07:54:13,382 INFO L857 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-10-13 07:54:13,382 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-10-13 07:54:13,382 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-10-13 07:54:13,382 INFO L857 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-10-13 07:54:13,383 INFO L857 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,383 INFO L857 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,383 INFO L857 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,383 INFO L857 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-10-13 07:54:13,383 INFO L857 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-10-13 07:54:13,384 INFO L857 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-10-13 07:54:13,384 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-13 07:54:13,384 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-10-13 07:54:13,384 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-10-13 07:54:13,384 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-10-13 07:54:13,385 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-10-13 07:54:13,385 INFO L857 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,385 INFO L857 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,385 INFO L857 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,385 INFO L857 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-10-13 07:54:13,385 INFO L857 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-10-13 07:54:13,386 INFO L857 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-10-13 07:54:13,386 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:54:13,386 INFO L857 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-10-13 07:54:13,386 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 152) no Hoare annotation was computed. [2021-10-13 07:54:13,387 INFO L857 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-10-13 07:54:13,387 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-10-13 07:54:13,387 INFO L857 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-10-13 07:54:13,387 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-10-13 07:54:13,387 INFO L857 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,388 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,388 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,388 INFO L857 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-10-13 07:54:13,388 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-10-13 07:54:13,388 INFO L857 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-10-13 07:54:13,389 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-10-13 07:54:13,389 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-13 07:54:13,389 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-10-13 07:54:13,389 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-10-13 07:54:13,389 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-10-13 07:54:13,389 INFO L857 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,389 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,389 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,389 INFO L857 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-10-13 07:54:13,390 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-10-13 07:54:13,390 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-13 07:54:13,390 INFO L857 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-10-13 07:54:13,390 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-10-13 07:54:13,390 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-10-13 07:54:13,390 INFO L857 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-10-13 07:54:13,390 INFO L857 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-10-13 07:54:13,390 INFO L857 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,391 INFO L857 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,391 INFO L857 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,391 INFO L857 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-10-13 07:54:13,391 INFO L857 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-10-13 07:54:13,391 INFO L857 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-10-13 07:54:13,392 INFO L857 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,393 INFO L857 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-10-13 07:54:13,394 INFO L857 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-10-13 07:54:13,394 INFO L857 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-10-13 07:54:13,394 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-13 07:54:13,394 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-10-13 07:54:13,394 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-10-13 07:54:13,394 INFO L857 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-10-13 07:54:13,394 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-10-13 07:54:13,395 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,395 INFO L857 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,395 INFO L857 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-10-13 07:54:13,395 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-10-13 07:54:13,395 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-13 07:54:13,396 INFO L857 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-10-13 07:54:13,396 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-10-13 07:54:13,396 INFO L857 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-10-13 07:54:13,396 INFO L857 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-10-13 07:54:13,396 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-10-13 07:54:13,397 INFO L857 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,397 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,397 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-10-13 07:54:13,397 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:54:13,397 INFO L857 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-10-13 07:54:13,398 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-13 07:54:13,398 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-10-13 07:54:13,398 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-10-13 07:54:13,398 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-10-13 07:54:13,398 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,399 INFO L857 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,399 INFO L853 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse4 (= (_ bv8 32) ~a15~0))) (let ((.cse2 (= (_ bv1 32) ~a24~0)) (.cse8 (= ~a15~0 (_ bv9 32))) (.cse13 (not .cse4)) (.cse12 (= ~a21~0 (_ bv9 32))) (.cse9 (= (_ bv8 32) ~a21~0))) (let ((.cse1 (not .cse9)) (.cse3 (bvsle ~a12~0 (_ bv4294967253 32))) (.cse0 (not .cse12)) (.cse10 (bvslt (_ bv11 32) ~a12~0)) (.cse5 (or (not (bvslt (_ bv80 32) ~a12~0)) .cse13)) (.cse6 (not .cse8)) (.cse7 (or (not .cse2) .cse13))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse5 .cse6 .cse1 .cse7) (and (not .cse3) .cse8) (and .cse9 .cse8) (and (bvsge (_ bv80 32) ~a12~0) .cse10) (and .cse0 .cse2 .cse4) (and (let ((.cse11 (bvslt (_ bv4294967253 32) ~a12~0))) (or (and .cse11 .cse12 (= ULTIMATE.start_calculate_output_~input (_ bv6 32))) (and (= ULTIMATE.start_calculate_output_~input (_ bv2 32)) .cse11 .cse12) (and .cse11 .cse12 (= ULTIMATE.start_calculate_output_~input (_ bv3 32))) (and .cse11 .cse12 (= ULTIMATE.start_calculate_output_~input (_ bv4 32))) (and .cse11 .cse12 (= ULTIMATE.start_calculate_output_~input (_ bv1 32))))) (not .cse10)) (and .cse5 .cse6 (not (= (_ bv5 32) ~a15~0)) .cse7))))) [2021-10-13 07:54:13,400 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-10-13 07:54:13,400 INFO L857 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-10-13 07:54:13,400 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-13 07:54:13,400 INFO L857 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-10-13 07:54:13,400 INFO L857 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-10-13 07:54:13,401 INFO L857 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-10-13 07:54:13,401 INFO L857 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-10-13 07:54:13,401 INFO L857 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-10-13 07:54:13,401 INFO L857 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,401 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,402 INFO L860 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-10-13 07:54:13,402 INFO L857 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-10-13 07:54:13,402 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-10-13 07:54:13,402 INFO L857 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-10-13 07:54:13,402 INFO L857 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-10-13 07:54:13,402 INFO L857 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-13 07:54:13,403 INFO L857 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-10-13 07:54:13,404 INFO L857 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-10-13 07:54:13,404 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,404 INFO L857 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,404 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-13 07:54:13,404 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,404 INFO L857 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-10-13 07:54:13,404 INFO L853 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse4 (= (_ bv8 32) ~a15~0))) (let ((.cse2 (= (_ bv1 32) ~a24~0)) (.cse8 (= ~a15~0 (_ bv9 32))) (.cse13 (not .cse4)) (.cse12 (= ~a21~0 (_ bv9 32))) (.cse9 (= (_ bv8 32) ~a21~0))) (let ((.cse1 (not .cse9)) (.cse3 (bvsle ~a12~0 (_ bv4294967253 32))) (.cse0 (not .cse12)) (.cse10 (bvslt (_ bv11 32) ~a12~0)) (.cse5 (or (not (bvslt (_ bv80 32) ~a12~0)) .cse13)) (.cse6 (not .cse8)) (.cse7 (or (not .cse2) .cse13))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse5 .cse6 .cse1 .cse7) (and (not .cse3) .cse8) (and .cse9 .cse8) (and (bvsge (_ bv80 32) ~a12~0) .cse10) (and .cse0 .cse2 .cse4) (and (let ((.cse11 (bvslt (_ bv4294967253 32) ~a12~0))) (or (and .cse11 .cse12 (= ULTIMATE.start_calculate_output_~input (_ bv6 32))) (and (= ULTIMATE.start_calculate_output_~input (_ bv2 32)) .cse11 .cse12) (and .cse11 .cse12 (= ULTIMATE.start_calculate_output_~input (_ bv3 32))) (and .cse11 .cse12 (= ULTIMATE.start_calculate_output_~input (_ bv4 32))) (and .cse11 .cse12 (= ULTIMATE.start_calculate_output_~input (_ bv1 32))))) (not .cse10)) (and .cse5 .cse6 (not (= (_ bv5 32) ~a15~0)) .cse7))))) [2021-10-13 07:54:13,405 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-10-13 07:54:13,405 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-10-13 07:54:13,405 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-10-13 07:54:13,405 INFO L857 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-10-13 07:54:13,405 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-13 07:54:13,406 INFO L857 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-10-13 07:54:13,406 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-10-13 07:54:13,406 INFO L857 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-10-13 07:54:13,406 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-10-13 07:54:13,406 INFO L857 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,406 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,406 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-10-13 07:54:13,406 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-10-13 07:54:13,406 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-10-13 07:54:13,407 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-13 07:54:13,407 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-13 07:54:13,412 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:54:13,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:54:13 BoogieIcfgContainer [2021-10-13 07:54:13,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:54:13,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:54:13,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:54:13,443 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:54:13,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:31" (3/4) ... [2021-10-13 07:54:13,447 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:54:13,479 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:54:13,481 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:54:13,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:54:13,486 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:54:13,644 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:54:13,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:54:13,646 INFO L168 Benchmark]: Toolchain (without parser) took 228055.33 ms. Allocated memory was 62.9 MB in the beginning and 497.0 MB in the end (delta: 434.1 MB). Free memory was 41.4 MB in the beginning and 180.7 MB in the end (delta: -139.3 MB). Peak memory consumption was 383.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:13,647 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:13,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1099.01 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 41.2 MB in the beginning and 61.4 MB in the end (delta: -20.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:13,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.80 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 55.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:13,648 INFO L168 Benchmark]: Boogie Preprocessor took 157.04 ms. Allocated memory is still 81.8 MB. Free memory was 55.1 MB in the beginning and 50.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:13,649 INFO L168 Benchmark]: RCFGBuilder took 4115.54 ms. Allocated memory was 81.8 MB in the beginning and 113.2 MB in the end (delta: 31.5 MB). Free memory was 50.0 MB in the beginning and 79.0 MB in the end (delta: -29.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:13,650 INFO L168 Benchmark]: TraceAbstraction took 222352.69 ms. Allocated memory was 113.2 MB in the beginning and 497.0 MB in the end (delta: 383.8 MB). Free memory was 79.0 MB in the beginning and 99.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 366.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:13,650 INFO L168 Benchmark]: Witness Printer took 201.50 ms. Allocated memory is still 497.0 MB. Free memory was 99.7 MB in the beginning and 180.7 MB in the end (delta: -81.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:13,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1099.01 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 41.2 MB in the beginning and 61.4 MB in the end (delta: -20.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.80 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 55.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 157.04 ms. Allocated memory is still 81.8 MB. Free memory was 55.1 MB in the beginning and 50.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4115.54 ms. Allocated memory was 81.8 MB in the beginning and 113.2 MB in the end (delta: 31.5 MB). Free memory was 50.0 MB in the beginning and 79.0 MB in the end (delta: -29.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 222352.69 ms. Allocated memory was 113.2 MB in the beginning and 497.0 MB in the end (delta: 383.8 MB). Free memory was 79.0 MB in the beginning and 99.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 366.9 MB. Max. memory is 16.1 GB. * Witness Printer took 201.50 ms. Allocated memory is still 497.0 MB. Free memory was 99.7 MB in the beginning and 180.7 MB in the end (delta: -81.0 MB). Peak memory consumption was 7.1 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: 152]: 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, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 222230.6ms, OverallIterations: 10, TraceHistogramMax: 9, EmptinessCheckTime: 194.1ms, AutomataDifference: 61747.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3132.8ms, InitialAbstractionConstructionTime: 24.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 459 SDtfs, 4202 SDslu, 212 SDs, 0 SdLazy, 15871 SolverSat, 1580 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51148.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17384 GetRequests, 17297 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 3853.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4098occurred in iteration=7, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 833.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2336 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 72 NumberOfFragments, 327 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3346 FormulaSimplificationTreeSizeReduction, 668.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 5832 FormulaSimplificationTreeSizeReductionInter, 2455.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 501.7ms SsaConstructionTime, 3525.4ms SatisfiabilityAnalysisTime, 105391.3ms InterpolantComputationTime, 8688 NumberOfCodeBlocks, 8688 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 17348 ConstructedInterpolants, 0 QuantifiedInterpolants, 73699 SizeOfPredicates, 39 NumberOfNonLiveVariables, 9804 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 33860/40000 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: 30]: Loop Invariant Derived loop invariant: (((((((((!(a21 == 9bv32) && !(8bv32 == a21)) && 1bv32 == a24) || (~bvsle32(a12, 4294967253bv32) && 8bv32 == a15)) || ((((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && !(8bv32 == a21)) && (!(1bv32 == a24) || !(8bv32 == a15)))) || (!~bvsle32(a12, 4294967253bv32) && a15 == 9bv32)) || (8bv32 == a21 && a15 == 9bv32)) || (~bvsge32(80bv32, a12) && ~bvslt32(11bv32, a12))) || ((!(a21 == 9bv32) && 1bv32 == a24) && 8bv32 == a15)) || (((((((~bvslt32(4294967253bv32, a12) && a21 == 9bv32) && input == 6bv32) || ((input == 2bv32 && ~bvslt32(4294967253bv32, a12)) && a21 == 9bv32)) || ((~bvslt32(4294967253bv32, a12) && a21 == 9bv32) && input == 3bv32)) || ((~bvslt32(4294967253bv32, a12) && a21 == 9bv32) && input == 4bv32)) || ((~bvslt32(4294967253bv32, a12) && a21 == 9bv32) && input == 1bv32)) && !~bvslt32(11bv32, a12))) || ((((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && !(5bv32 == a15)) && (!(1bv32 == a24) || !(8bv32 == a15))) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((!(a21 == 9bv32) && !(8bv32 == a21)) && 1bv32 == a24) || (~bvsle32(a12, 4294967253bv32) && 8bv32 == a15)) || ((((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && !(8bv32 == a21)) && (!(1bv32 == a24) || !(8bv32 == a15)))) || (!~bvsle32(a12, 4294967253bv32) && a15 == 9bv32)) || (8bv32 == a21 && a15 == 9bv32)) || (~bvsge32(80bv32, a12) && ~bvslt32(11bv32, a12))) || ((!(a21 == 9bv32) && 1bv32 == a24) && 8bv32 == a15)) || (((((((~bvslt32(4294967253bv32, a12) && a21 == 9bv32) && input == 6bv32) || ((input == 2bv32 && ~bvslt32(4294967253bv32, a12)) && a21 == 9bv32)) || ((~bvslt32(4294967253bv32, a12) && a21 == 9bv32) && input == 3bv32)) || ((~bvslt32(4294967253bv32, a12) && a21 == 9bv32) && input == 4bv32)) || ((~bvslt32(4294967253bv32, a12) && a21 == 9bv32) && input == 1bv32)) && !~bvslt32(11bv32, a12))) || ((((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && !(5bv32 == a15)) && (!(1bv32 == a24) || !(8bv32 == a15))) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:54:13,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7d088d-751e-456a-8ce0-7faeb359834c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...