./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label41.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_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/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_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/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_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/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 3747ef8755485569a0a339d6156dc01dce1d2f7e5665f5f439668d3f5ee386b0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:13:53,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:13:53,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:13:53,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:13:53,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:13:53,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:13:53,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:13:53,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:13:53,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:13:53,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:13:53,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:13:53,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:13:53,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:13:53,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:13:53,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:13:53,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:13:53,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:13:53,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:13:53,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:13:53,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:13:53,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:13:53,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:13:53,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:13:53,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:13:53,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:13:53,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:13:53,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:13:53,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:13:53,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:13:53,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:13:53,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:13:53,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:13:53,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:13:53,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:13:53,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:13:53,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:13:53,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:13:53,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:13:53,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:13:53,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:13:53,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:13:53,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:13:53,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:13:53,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:13:53,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:13:53,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:13:53,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:13:53,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:13:53,662 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:13:53,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:13:53,663 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:13:53,663 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:13:53,664 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:13:53,664 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:13:53,664 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:13:53,665 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:13:53,665 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:13:53,665 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:13:53,665 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:13:53,666 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:13:53,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:13:53,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:13:53,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:13:53,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:13:53,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:13:53,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:13:53,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:13:53,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:13:53,670 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:13:53,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:13:53,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:13:53,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:13:53,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:13:53,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:13:53,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:13:53,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:13:53,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:13:53,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:13:53,672 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:13:53,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:13:53,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:13:53,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:13:53,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:13:53,674 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_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3747ef8755485569a0a339d6156dc01dce1d2f7e5665f5f439668d3f5ee386b0 [2021-11-23 03:13:53,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:13:53,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:13:53,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:13:53,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:13:53,993 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:13:53,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/eca-rers2012/Problem19_label41.c [2021-11-23 03:13:54,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/data/2a2ec5b8e/d48b4ba12242491887c029b9dd01b92a/FLAG3a67aaad1 [2021-11-23 03:13:55,016 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:13:55,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/sv-benchmarks/c/eca-rers2012/Problem19_label41.c [2021-11-23 03:13:55,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/data/2a2ec5b8e/d48b4ba12242491887c029b9dd01b92a/FLAG3a67aaad1 [2021-11-23 03:13:55,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/data/2a2ec5b8e/d48b4ba12242491887c029b9dd01b92a [2021-11-23 03:13:55,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:13:55,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:13:55,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:13:55,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:13:55,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:13:55,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:55" (1/1) ... [2021-11-23 03:13:55,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459d8bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55, skipping insertion in model container [2021-11-23 03:13:55,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:55" (1/1) ... [2021-11-23 03:13:55,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:13:55,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:13:56,060 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_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/sv-benchmarks/c/eca-rers2012/Problem19_label41.c[1319,1332] [2021-11-23 03:13:57,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:13:57,906 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:13:57,926 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_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/sv-benchmarks/c/eca-rers2012/Problem19_label41.c[1319,1332] [2021-11-23 03:13:59,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:13:59,197 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:13:59,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59 WrapperNode [2021-11-23 03:13:59,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:13:59,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:13:59,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:13:59,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:13:59,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:13:59,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:14:00,362 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2021-11-23 03:14:00,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:14:00,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:14:00,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:14:00,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:14:00,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:14:00,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:14:00,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:14:00,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:14:01,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:14:01,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:14:01,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:14:01,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:14:01,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:14:01,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:14:01,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:14:01,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:59" (1/1) ... [2021-11-23 03:14:01,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:14:01,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:14:01,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:14:01,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4c377d-ce4a-4f9b-9779-0c812b1c0179/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:14:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:14:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:14:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:14:01,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:14:01,621 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:14:01,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:14:10,616 INFO L277 CfgBuilder]: Performing block encoding