./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array30_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array30_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V --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 bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:21:13,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:21:13,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:21:13,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:21:13,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:21:13,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:21:13,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:21:13,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:21:13,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:21:13,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:21:13,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:21:13,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:21:13,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:21:13,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:21:13,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:21:13,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:21:13,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:21:13,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:21:13,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:21:13,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:21:13,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:21:13,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:21:13,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:21:13,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:21:13,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:21:13,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:21:13,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:21:13,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:21:13,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:21:13,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:21:13,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:21:13,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:21:13,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:21:13,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:21:13,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:21:13,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:21:13,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:21:13,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:21:13,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:21:13,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:21:13,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:21:13,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:21:14,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:21:14,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:21:14,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:21:14,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:21:14,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:21:14,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:21:14,065 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:21:14,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:21:14,065 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:21:14,066 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:21:14,067 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:21:14,067 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:21:14,068 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:21:14,068 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:21:14,068 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:21:14,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:21:14,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:21:14,069 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:21:14,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:21:14,070 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:21:14,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:21:14,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:21:14,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:21:14,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:21:14,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:21:14,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:21:14,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:21:14,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:21:14,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:21:14,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:21:14,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:21:14,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:21:14,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:21:14,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:21:14,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:21:14,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:21:14,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:21:14,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:21:14,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:21:14,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:21:14,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:21:14,079 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_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c [2021-11-23 02:21:14,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:21:14,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:21:14,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:21:14,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:21:14,464 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:21:14,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/array-patterns/array30_pattern.c [2021-11-23 02:21:14,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/data/439b85f98/41093b2695a84d1babacbc548985a3d5/FLAG58c61151b [2021-11-23 02:21:15,151 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:21:15,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/sv-benchmarks/c/array-patterns/array30_pattern.c [2021-11-23 02:21:15,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/data/439b85f98/41093b2695a84d1babacbc548985a3d5/FLAG58c61151b [2021-11-23 02:21:15,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/data/439b85f98/41093b2695a84d1babacbc548985a3d5 [2021-11-23 02:21:15,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:21:15,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:21:15,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:21:15,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:21:15,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:21:15,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364d4a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15, skipping insertion in model container [2021-11-23 02:21:15,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:21:15,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:21:15,790 WARN L230 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_fc764160-fab7-48ef-8f8d-513a2ec85a82/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2021-11-23 02:21:15,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:21:15,839 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:21:15,861 WARN L230 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_fc764160-fab7-48ef-8f8d-513a2ec85a82/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2021-11-23 02:21:15,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:21:15,895 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:21:15,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15 WrapperNode [2021-11-23 02:21:15,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:21:15,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:21:15,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:21:15,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:21:15,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,952 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 80 [2021-11-23 02:21:15,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:21:15,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:21:15,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:21:15,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:21:15,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:21:15,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:21:15,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:21:15,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:21:15,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (1/1) ... [2021-11-23 02:21:15,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:21:16,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:16,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:21:16,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:21:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:21:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:21:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:21:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:21:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:21:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:21:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:21:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:21:16,169 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:21:16,172 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:21:16,365 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:21:16,429 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:21:16,430 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:21:16,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:16 BoogieIcfgContainer [2021-11-23 02:21:16,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:21:16,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:21:16,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:21:16,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:21:16,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:21:15" (1/3) ... [2021-11-23 02:21:16,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a39b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:16, skipping insertion in model container [2021-11-23 02:21:16,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:15" (2/3) ... [2021-11-23 02:21:16,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a39b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:16, skipping insertion in model container [2021-11-23 02:21:16,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:16" (3/3) ... [2021-11-23 02:21:16,444 INFO L111 eAbstractionObserver]: Analyzing ICFG array30_pattern.c [2021-11-23 02:21:16,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:21:16,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:21:16,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:21:16,538 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, mAutomataTypeConcurrency=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 [2021-11-23 02:21:16,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:21:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:21:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:21:16,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:16,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:21:16,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:16,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:16,574 INFO L85 PathProgramCache]: Analyzing trace with hash 115526967, now seen corresponding path program 1 times [2021-11-23 02:21:16,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:16,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156351542] [2021-11-23 02:21:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:16,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:16,733 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:21:16,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89029265] [2021-11-23 02:21:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:16,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:16,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:16,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:21:16,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:21:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:16,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:21:16,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:21:17,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:21:17,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:17,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156351542] [2021-11-23 02:21:17,096 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:21:17,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89029265] [2021-11-23 02:21:17,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89029265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:17,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:17,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:21:17,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030825354] [2021-11-23 02:21:17,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:17,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:21:17,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:17,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:21:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:21:17,149 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-11-23 02:21:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:17,245 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2021-11-23 02:21:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:21:17,249 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 [2021-11-23 02:21:17,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:17,261 INFO L225 Difference]: With dead ends: 19 [2021-11-23 02:21:17,262 INFO L226 Difference]: Without dead ends: 10 [2021-11-23 02:21:17,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:21:17,274 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:17,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:21:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-23 02:21:17,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-23 02:21:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:21:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2021-11-23 02:21:17,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 12 transitions. Word has length 5 [2021-11-23 02:21:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:17,316 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-11-23 02:21:17,317 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) [2021-11-23 02:21:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2021-11-23 02:21:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:21:17,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:17,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:21:17,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:21:17,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:17,522 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:17,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1483171754, now seen corresponding path program 1 times [2021-11-23 02:21:17,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:17,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784402614] [2021-11-23 02:21:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:17,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:17,532 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:21:17,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866221098] [2021-11-23 02:21:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:17,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:17,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:17,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:21:17,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:21:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:17,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:21:17,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:21:17,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:21:17,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:17,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784402614] [2021-11-23 02:21:17,668 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:21:17,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866221098] [2021-11-23 02:21:17,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866221098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:17,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:17,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:21:17,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998102212] [2021-11-23 02:21:17,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:17,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:21:17,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:21:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:21:17,672 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:21:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:17,722 INFO L93 Difference]: Finished difference Result 18 states and 26 transitions. [2021-11-23 02:21:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:21:17,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 02:21:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:17,724 INFO L225 Difference]: With dead ends: 18 [2021-11-23 02:21:17,724 INFO L226 Difference]: Without dead ends: 11 [2021-11-23 02:21:17,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:21:17,727 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:17,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:21:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-23 02:21:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-23 02:21:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:21:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-11-23 02:21:17,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 7 [2021-11-23 02:21:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:17,735 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-11-23 02:21:17,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:21:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-11-23 02:21:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:21:17,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:17,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:21:17,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:17,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:17,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:17,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1316944234, now seen corresponding path program 1 times [2021-11-23 02:21:17,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:17,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015312515] [2021-11-23 02:21:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:17,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:17,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:21:17,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057658481] [2021-11-23 02:21:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:17,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:17,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:17,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:21:17,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:21:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:18,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:21:18,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:21:18,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:21:18,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:18,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015312515] [2021-11-23 02:21:18,165 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:21:18,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057658481] [2021-11-23 02:21:18,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057658481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:21:18,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1790223401] [2021-11-23 02:21:18,202 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-23 02:21:18,202 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:21:18,209 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:21:18,216 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:21:18,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:21:18,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:18,372 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:21:18,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 02:21:18,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:18,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2021-11-23 02:21:18,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:21:18,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2021-11-23 02:21:18,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 02:21:19,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 02:21:19,472 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:21:20,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1790223401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:20,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:21:20,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 9 [2021-11-23 02:21:20,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319008728] [2021-11-23 02:21:20,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:20,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:21:20,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:20,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:21:20,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:21:20,289 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:21:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:20,381 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-11-23 02:21:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:21:20,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 02:21:20,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:20,382 INFO L225 Difference]: With dead ends: 16 [2021-11-23 02:21:20,382 INFO L226 Difference]: Without dead ends: 13 [2021-11-23 02:21:20,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:21:20,385 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:20,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:21:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-23 02:21:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-23 02:21:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-11-23 02:21:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-11-23 02:21:20,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2021-11-23 02:21:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:20,394 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-11-23 02:21:20,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:21:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2021-11-23 02:21:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:21:20,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:20,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:21:20,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:20,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:20,611 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:20,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 365414145, now seen corresponding path program 1 times [2021-11-23 02:21:20,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:20,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382321588] [2021-11-23 02:21:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:20,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:20,618 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:21:20,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574127516] [2021-11-23 02:21:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:20,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:20,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:20,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:21:20,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:21:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:20,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 02:21:20,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:20,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:21:20,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:21:21,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2021-11-23 02:21:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:21:21,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:26,593 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:21:26,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 157 [2021-11-23 02:21:33,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-11-23 02:21:35,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:21:35,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 57 [2021-11-23 02:21:41,788 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:21:41,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 355 treesize of output 205 [2021-11-23 02:22:17,455 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse18 (mod c_~ARR_SIZE~0 4294967296))) (let ((.cse0 (mod |c_ULTIMATE.start_main_~row~0#1| 65536)) (.cse16 (+ (* 4 (* |c_ULTIMATE.start_main_~row~0#1| .cse18)) (* 4 |c_ULTIMATE.start_main_~column~0#1|))) (.cse15 (mod |c_ULTIMATE.start_main_~column~0#1| 65536))) (let ((.cse14 (* 3 .cse15)) (.cse17 (= (* 17179869184 |c_ULTIMATE.start_main_~row~0#1|) .cse16)) (.cse19 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0)) (.cse3 (* 3 .cse0))) (let ((.cse13 (+ .cse19 .cse3)) (.cse1 (or .cse17 (<= .cse18 2147483647))) (.cse2 (+ .cse19 .cse14)) (.cse4 (* 3 |c_ULTIMATE.start_main_~sum~0#1|)) (.cse5 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0)) (.cse6 (or (= .cse16 0) (and .cse17 (< 2147483647 .cse18))))) (let ((.cse11 (<= .cse0 .cse15)) (.cse12 (and .cse1 (= .cse2 (+ .cse3 .cse4 c_~ARR_SIZE~0 .cse5)) .cse6)) (.cse7 (<= .cse15 32767)) (.cse8 (and .cse1 .cse6 (= .cse13 (+ .cse14 .cse4 c_~ARR_SIZE~0 .cse5)))) (.cse10 (< .cse15 .cse0)) (.cse9 (< 32767 .cse15))) (and (or (< 32767 .cse0) (and (or (and .cse1 (= .cse2 (+ 196608 .cse3 .cse4 c_~ARR_SIZE~0 .cse5)) .cse6) .cse7) (or .cse8 .cse9 .cse10) (or .cse11 .cse12))) (or (and (or .cse11 .cse12 .cse7) (or .cse8 .cse10) (or .cse9 (and (= .cse13 (+ .cse14 196608 .cse4 c_~ARR_SIZE~0 .cse5)) .cse1 .cse6))) (<= .cse0 32767)))))))) (<= c_~ARR_SIZE~0 0) (< (+ |c_ULTIMATE.start_main_~column~0#1| 1) c_~ARR_SIZE~0)) is different from false [2021-11-23 02:22:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:22:23,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:22:23,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382321588] [2021-11-23 02:22:23,991 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:22:23,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574127516] [2021-11-23 02:22:23,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574127516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:22:23,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1547885484] [2021-11-23 02:22:23,995 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-23 02:22:23,995 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:22:23,995 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:22:23,996 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:22:23,996 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:22:24,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:22:24,079 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:22:24,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 02:22:24,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:22:24,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2021-11-23 02:22:24,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:22:24,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 47 [2021-11-23 02:22:24,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 02:22:24,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 02:22:24,728 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:22:25,654 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '317#(and (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~row~0#1|) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (* |ULTIMATE.start_main_~sum~0#1| 3) (* (* ~ARR_SIZE~0 (+ (- 1) ~ARR_SIZE~0)) (+ ~ARR_SIZE~0 1))) 1 0)) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-23 02:22:25,654 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:22:25,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:22:25,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-11-23 02:22:25,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281596078] [2021-11-23 02:22:25,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:22:25,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 02:22:25,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:22:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 02:22:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=438, Unknown=1, NotChecked=42, Total=552 [2021-11-23 02:22:25,657 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2021-11-23 02:22:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:25,690 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2021-11-23 02:22:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:22:25,691 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 02:22:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:25,691 INFO L225 Difference]: With dead ends: 12 [2021-11-23 02:22:25,691 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:22:25,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=71, Invalid=438, Unknown=1, NotChecked=42, Total=552 [2021-11-23 02:22:25,693 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:25,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2021-11-23 02:22:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:22:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:22:25,695 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) [2021-11-23 02:22:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:22:25,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-11-23 02:22:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:25,696 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:22:25,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2021-11-23 02:22:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:22:25,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:22:25,701 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:22:25,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:25,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:22:25,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:22:25,920 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 02:22:25,920 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2021-11-23 02:22:25,920 INFO L854 garLoopResultBuilder]: At program point L53-3(lines 53 55) the Hoare annotation is: false [2021-11-23 02:22:25,921 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:22:25,921 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-11-23 02:22:25,921 INFO L858 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-11-23 02:22:25,921 INFO L861 garLoopResultBuilder]: At program point L29-3(line 29) the Hoare annotation is: true [2021-11-23 02:22:25,921 INFO L854 garLoopResultBuilder]: At program point L58-3(lines 58 60) the Hoare annotation is: false [2021-11-23 02:22:25,921 INFO L854 garLoopResultBuilder]: At program point L54-3(lines 54 55) the Hoare annotation is: false [2021-11-23 02:22:25,922 INFO L854 garLoopResultBuilder]: At program point L59-3(lines 59 60) the Hoare annotation is: false [2021-11-23 02:22:25,924 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-23 02:22:25,926 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:22:25,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:22:25 BoogieIcfgContainer [2021-11-23 02:22:25,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:22:25,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:22:25,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:22:25,941 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:22:25,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:16" (3/4) ... [2021-11-23 02:22:25,945 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:22:25,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-11-23 02:22:25,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-23 02:22:25,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 02:22:25,961 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:22:26,008 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:22:26,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:22:26,009 INFO L158 Benchmark]: Toolchain (without parser) took 70466.68ms. Allocated memory was 121.6MB in the beginning and 155.2MB in the end (delta: 33.6MB). Free memory was 85.2MB in the beginning and 129.5MB in the end (delta: -44.3MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. [2021-11-23 02:22:26,009 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 94.9MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:22:26,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.17ms. Allocated memory is still 121.6MB. Free memory was 84.9MB in the beginning and 96.2MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:22:26,010 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.18ms. Allocated memory is still 121.6MB. Free memory was 95.6MB in the beginning and 94.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:22:26,011 INFO L158 Benchmark]: Boogie Preprocessor took 31.83ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 92.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:22:26,011 INFO L158 Benchmark]: RCFGBuilder took 447.62ms. Allocated memory is still 121.6MB. Free memory was 92.8MB in the beginning and 79.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:22:26,011 INFO L158 Benchmark]: TraceAbstraction took 69504.66ms. Allocated memory was 121.6MB in the beginning and 155.2MB in the end (delta: 33.6MB). Free memory was 79.4MB in the beginning and 43.0MB in the end (delta: 36.4MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2021-11-23 02:22:26,012 INFO L158 Benchmark]: Witness Printer took 67.45ms. Allocated memory is still 155.2MB. Free memory was 43.0MB in the beginning and 129.5MB in the end (delta: -86.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:22:26,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 94.9MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.17ms. Allocated memory is still 121.6MB. Free memory was 84.9MB in the beginning and 96.2MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.18ms. Allocated memory is still 121.6MB. Free memory was 95.6MB in the beginning and 94.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.83ms. Allocated memory is still 121.6MB. Free memory was 94.3MB in the beginning and 92.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 447.62ms. Allocated memory is still 121.6MB. Free memory was 92.8MB in the beginning and 79.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 69504.66ms. Allocated memory was 121.6MB in the beginning and 155.2MB in the end (delta: 33.6MB). Free memory was 79.4MB in the beginning and 43.0MB in the end (delta: 36.4MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. * Witness Printer took 67.45ms. Allocated memory is still 155.2MB. Free memory was 43.0MB in the beginning and 129.5MB in the end (delta: -86.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: 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, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 8 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=3, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 63.7s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 997 SizeOfPredicates, 28 NumberOfNonLiveVariables, 287 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 3/13 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: OVERALL_TIME: 1.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME: 0.9s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 15, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 31, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.7s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 69, DAG_COMPRESSION_RETAINED_NODES: 24, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-23 02:22:26,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc764160-fab7-48ef-8f8d-513a2ec85a82/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE