./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal31.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW --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 64bit --witnessprinter.graph.data.programhash eb025466549cbb85a27504c97f7f6398ba5c7185bf33af83df28ae3a7ef31ace --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:52:50,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:52:50,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:52:50,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:52:50,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:52:50,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:52:50,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:52:50,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:52:50,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:52:50,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:52:50,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:52:50,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:52:50,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:52:50,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:52:50,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:52:50,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:52:50,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:52:50,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:52:50,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:52:50,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:52:50,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:52:50,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:52:50,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:52:50,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:52:50,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:52:50,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:52:50,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:52:50,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:52:50,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:52:50,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:52:50,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:52:50,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:52:50,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:52:50,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:52:50,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:52:50,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:52:50,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:52:50,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:52:50,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:52:50,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:52:50,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:52:50,553 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:52:50,594 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:52:50,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:52:50,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:52:50,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:52:50,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:52:50,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:52:50,596 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:52:50,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:52:50,597 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:52:50,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:52:50,598 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:52:50,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:52:50,598 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:52:50,599 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:52:50,599 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:52:50,599 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:52:50,599 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:52:50,599 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:52:50,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:52:50,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:52:50,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:52:50,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:52:50,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:52:50,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:52:50,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:52:50,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:52:50,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:52:50,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:52:50,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:52:50,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:52:50,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:52:50,603 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:52:50,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:52:50,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:52:50,604 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:52:50,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:52:50,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:52:50,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:52:50,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb025466549cbb85a27504c97f7f6398ba5c7185bf33af83df28ae3a7ef31ace [2022-11-23 14:52:50,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:52:50,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:52:50,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:52:50,874 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:52:50,874 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:52:50,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal31.c [2022-11-23 14:52:54,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:52:54,601 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:52:54,601 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal31.c [2022-11-23 14:52:54,659 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/data/aa4f06848/b3745d9a62924e569f1a9f0b3bc0a1dc/FLAG69f5d8cd3 [2022-11-23 14:52:54,679 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/data/aa4f06848/b3745d9a62924e569f1a9f0b3bc0a1dc [2022-11-23 14:52:54,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:52:54,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:52:54,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:52:54,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:52:54,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:52:54,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:54" (1/1) ... [2022-11-23 14:52:54,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ebafa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:54, skipping insertion in model container [2022-11-23 14:52:54,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:54" (1/1) ... [2022-11-23 14:52:54,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:52:54,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:52:55,199 WARN L237 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_cf35419a-fe53-4067-b11d-771dfa6c74c3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal31.c[1107,1120] [2022-11-23 14:52:56,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:52:56,314 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:52:56,326 WARN L237 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_cf35419a-fe53-4067-b11d-771dfa6c74c3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal31.c[1107,1120] [2022-11-23 14:52:57,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:52:57,013 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:52:57,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57 WrapperNode [2022-11-23 14:52:57,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:52:57,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:52:57,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:52:57,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:52:57,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:57,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,185 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 10325 [2022-11-23 14:52:58,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:52:58,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:52:58,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:52:58,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:52:58,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,760 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:52:58,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:52:58,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:52:58,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:52:58,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:57" (1/1) ... [2022-11-23 14:52:58,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:52:58,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:52:58,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:52:59,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf35419a-fe53-4067-b11d-771dfa6c74c3/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:52:59,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:52:59,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:53:00,687 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:53:00,689 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation