./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P --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 ada1a27904128215b4edfdaf35827c452e538bc81c43cd0aac0f11f9e4d77236 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:05:11,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:05:11,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:05:12,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:05:12,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:05:12,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:05:12,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:05:12,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:05:12,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:05:12,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:05:12,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:05:12,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:05:12,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:05:12,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:05:12,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:05:12,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:05:12,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:05:12,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:05:12,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:05:12,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:05:12,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:05:12,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:05:12,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:05:12,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:05:12,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:05:12,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:05:12,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:05:12,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:05:12,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:05:12,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:05:12,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:05:12,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:05:12,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:05:12,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:05:12,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:05:12,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:05:12,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:05:12,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:05:12,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:05:12,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:05:12,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:05:12,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:05:12,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:05:12,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:05:12,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:05:12,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:05:12,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:05:12,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:05:12,157 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:05:12,157 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:05:12,158 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:05:12,158 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:05:12,159 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:05:12,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:05:12,160 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:05:12,160 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:05:12,161 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:05:12,161 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:05:12,161 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:05:12,162 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:05:12,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:05:12,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:05:12,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:05:12,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:05:12,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:05:12,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:05:12,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:05:12,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:05:12,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:05:12,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:05:12,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:05:12,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:05:12,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:05:12,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:05:12,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:05:12,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:05:12,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:05:12,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:05:12,170 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:05:12,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:05:12,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:05:12,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:05:12,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:05:12,172 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_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ada1a27904128215b4edfdaf35827c452e538bc81c43cd0aac0f11f9e4d77236 [2021-11-21 00:05:12,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:05:12,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:05:12,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:05:12,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:05:12,535 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:05:12,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/eca-rers2012/Problem12_label14.c [2021-11-21 00:05:12,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/data/1f44a0fdc/2b266b2c09c54e6eb002a39ea0584bf1/FLAG306c04501 [2021-11-21 00:05:13,578 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:05:13,580 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/sv-benchmarks/c/eca-rers2012/Problem12_label14.c [2021-11-21 00:05:13,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/data/1f44a0fdc/2b266b2c09c54e6eb002a39ea0584bf1/FLAG306c04501 [2021-11-21 00:05:14,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/data/1f44a0fdc/2b266b2c09c54e6eb002a39ea0584bf1 [2021-11-21 00:05:14,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:05:14,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:05:14,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:05:14,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:05:14,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:05:14,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:05:14" (1/1) ... [2021-11-21 00:05:14,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69868ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:14, skipping insertion in model container [2021-11-21 00:05:14,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:05:14" (1/1) ... [2021-11-21 00:05:14,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:05:14,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:05:14,691 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_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/sv-benchmarks/c/eca-rers2012/Problem12_label14.c[6042,6055] [2021-11-21 00:05:15,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:05:15,904 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:05:15,969 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_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/sv-benchmarks/c/eca-rers2012/Problem12_label14.c[6042,6055] [2021-11-21 00:05:16,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:05:16,691 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:05:16,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16 WrapperNode [2021-11-21 00:05:16,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:05:16,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:05:16,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:05:16,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:05:16,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:16,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:17,207 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2021-11-21 00:05:17,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:05:17,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:05:17,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:05:17,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:05:17,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:17,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:17,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:17,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:17,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:17,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:17,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:17,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:05:17,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:05:17,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:05:17,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:05:17,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:16" (1/1) ... [2021-11-21 00:05:17,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:05:17,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:05:17,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:05:18,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2671bc7b-dbff-4758-9e24-6231a8ba7cd2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:05:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:05:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:05:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:05:18,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:05:18,276 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:05:18,290 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:05:23,637 INFO L277 CfgBuilder]: Performing block encoding