./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8 --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 fdc120a35f3e4d083158deea32322882faa73723d02c89f45ae81ad994f702e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:32:01,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:32:01,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:32:01,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:32:01,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:32:01,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:32:01,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:32:01,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:32:01,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:32:01,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:32:01,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:32:01,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:32:01,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:32:01,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:32:01,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:32:01,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:32:01,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:32:01,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:32:01,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:32:01,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:32:01,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:32:01,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:32:01,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:32:01,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:32:01,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:32:01,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:32:01,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:32:01,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:32:01,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:32:01,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:32:01,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:32:01,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:32:01,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:32:01,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:32:01,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:32:01,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:32:01,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:32:01,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:32:01,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:32:01,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:32:01,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:32:01,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:32:01,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:32:01,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:32:01,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:32:01,831 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:32:01,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:32:01,832 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:32:01,832 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:32:01,833 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:32:01,833 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:32:01,833 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:32:01,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:32:01,835 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:32:01,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:32:01,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:32:01,836 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:32:01,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:32:01,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:32:01,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:32:01,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:32:01,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:32:01,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:32:01,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:32:01,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:32:01,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:32:01,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:32:01,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:32:01,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:32:01,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:32:01,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:32:01,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:32:01,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:32:01,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:32:01,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:32:01,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:32:01,844 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:32:01,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:32:01,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:32:01,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:32:01,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:32:01,845 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_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc120a35f3e4d083158deea32322882faa73723d02c89f45ae81ad994f702e9 [2021-11-07 01:32:02,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:32:02,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:32:02,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:32:02,214 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:32:02,215 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:32:02,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/eca-rers2018/Problem18.c [2021-11-07 01:32:02,295 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/data/860ae87a5/6f0b1bc0e9684c228ac606a78614cfcd/FLAG56c10fe6e [2021-11-07 01:32:15,601 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:32:15,602 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/sv-benchmarks/c/eca-rers2018/Problem18.c [2021-11-07 01:32:17,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/data/860ae87a5/6f0b1bc0e9684c228ac606a78614cfcd/FLAG56c10fe6e [2021-11-07 01:32:17,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e7a597-1ba7-480a-a722-f93061f01512/bin/utaipan-UUZaoUuFF8/data/860ae87a5/6f0b1bc0e9684c228ac606a78614cfcd [2021-11-07 01:32:17,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:32:17,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:32:17,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:32:17,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:32:17,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:32:17,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:17" (1/1) ... [2021-11-07 01:32:17,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50feaffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:17, skipping insertion in model container [2021-11-07 01:32:17,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:17" (1/1) ... [2021-11-07 01:32:17,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:32:24,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:32:27,852 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_f9e7a597-1ba7-480a-a722-f93061f01512/sv-benchmarks/c/eca-rers2018/Problem18.c[778,791] [2021-11-07 01:32:28,405 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_f9e7a597-1ba7-480a-a722-f93061f01512/sv-benchmarks/c/eca-rers2018/Problem18.c[817,830]