./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem08_label39.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_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/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_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem08_label39.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/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_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/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 6ae780d7110b531d3f0752ea41be8b14b6f43af1c7b16cf5acc7fb7939bb5b40 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:54:11,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:54:11,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:54:11,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:54:11,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:54:11,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:54:11,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:54:11,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:54:11,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:54:11,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:54:11,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:54:11,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:54:11,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:54:11,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:54:11,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:54:11,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:54:11,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:54:11,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:54:11,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:54:11,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:54:11,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:54:11,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:54:11,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:54:11,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:54:11,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:54:11,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:54:11,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:54:11,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:54:11,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:54:11,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:54:11,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:54:11,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:54:11,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:54:11,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:54:11,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:54:11,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:54:11,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:54:11,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:54:11,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:54:11,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:54:11,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:54:11,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:54:11,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:54:11,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:54:11,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:54:11,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:54:11,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:54:11,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:54:11,221 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:54:11,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:54:11,221 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:54:11,222 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:54:11,223 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:54:11,223 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:54:11,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:54:11,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:54:11,224 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:54:11,224 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:54:11,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:54:11,224 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:54:11,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:54:11,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:54:11,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:54:11,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:54:11,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:54:11,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:54:11,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:54:11,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:54:11,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:54:11,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:54:11,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:54:11,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:54:11,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:54:11,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:54:11,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:54:11,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:54:11,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:54:11,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:54:11,231 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:54:11,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:54:11,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:54:11,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:54:11,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:54:11,232 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_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ae780d7110b531d3f0752ea41be8b14b6f43af1c7b16cf5acc7fb7939bb5b40 [2021-11-23 02:54:11,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:54:11,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:54:11,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:54:11,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:54:11,539 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:54:11,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/eca-rers2012/Problem08_label39.c [2021-11-23 02:54:11,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/data/e7ae00497/612e5951747d4ae190c8e787b0d2f999/FLAG6e419152a [2021-11-23 02:54:15,534 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:54:15,535 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/sv-benchmarks/c/eca-rers2012/Problem08_label39.c [2021-11-23 02:54:15,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/data/e7ae00497/612e5951747d4ae190c8e787b0d2f999/FLAG6e419152a [2021-11-23 02:54:15,944 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/data/e7ae00497/612e5951747d4ae190c8e787b0d2f999 [2021-11-23 02:54:15,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:54:15,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:54:15,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:54:15,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:54:15,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:54:15,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:54:15" (1/1) ... [2021-11-23 02:54:15,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb0bcfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:15, skipping insertion in model container [2021-11-23 02:54:15,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:54:15" (1/1) ... [2021-11-23 02:54:15,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:54:17,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:54:45,208 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_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/sv-benchmarks/c/eca-rers2012/Problem08_label39.c[5714899,5714912] [2021-11-23 02:54:45,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:54:45,376 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:55:01,150 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_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/sv-benchmarks/c/eca-rers2012/Problem08_label39.c[5714899,5714912] [2021-11-23 02:55:01,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:55:07,087 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:55:07,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07 WrapperNode [2021-11-23 02:55:07,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:55:07,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:55:07,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:55:07,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:55:07,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:08,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:15,017 INFO L137 Inliner]: procedures = 95, calls = 89, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 184288 [2021-11-23 02:55:15,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:55:15,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:55:15,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:55:15,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:55:15,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:15,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:15,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:15,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:19,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:20,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:21,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:21,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:55:21,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:55:21,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:55:21,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:55:22,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:07" (1/1) ... [2021-11-23 02:55:22,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:55:22,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:55:22,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:55:22,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8056ebaa-42c0-44c1-81d1-47e50dc7ed36/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:55:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:55:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:55:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:55:22,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:55:22,329 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:55:22,331 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:56:43,217 INFO L277 CfgBuilder]: Performing block encoding