./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem102_label35.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem102_label35.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl --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 edc565b64c291ffeb463c1db23e614b96893e5acce81b877f7d105a3b5fd94db --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:50:28,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:50:28,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:50:28,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:50:28,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:50:28,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:50:28,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:50:28,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:50:28,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:50:28,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:50:28,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:50:28,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:50:28,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:50:28,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:50:28,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:50:28,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:50:28,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:50:28,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:50:28,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:50:28,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:50:28,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:50:28,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:50:28,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:50:28,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:50:28,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:50:28,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:50:28,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:50:28,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:50:28,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:50:28,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:50:28,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:50:28,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:50:28,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:50:28,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:50:28,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:50:28,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:50:28,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:50:28,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:50:28,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:50:28,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:50:28,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:50:28,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:50:28,373 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:50:28,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:50:28,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:50:28,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:50:28,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:50:28,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:50:28,377 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:50:28,377 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:50:28,377 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:50:28,378 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:50:28,379 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:50:28,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:50:28,379 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:50:28,380 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:50:28,380 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:50:28,380 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:50:28,380 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:50:28,381 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:50:28,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:50:28,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:50:28,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:50:28,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:50:28,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:50:28,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:50:28,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:50:28,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:50:28,385 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:50:28,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:50:28,386 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:50:28,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:50:28,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:50:28,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:50:28,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:50:28,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:50:28,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:50:28,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:50:28,388 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:50:28,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:50:28,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:50:28,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:50:28,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:50:28,389 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_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc565b64c291ffeb463c1db23e614b96893e5acce81b877f7d105a3b5fd94db [2021-11-23 16:50:28,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:50:28,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:50:28,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:50:28,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:50:28,737 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:50:28,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-programs/Problem102_label35.c [2021-11-23 16:50:28,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data/841357a92/b004f2d23c124b8e8669fe19d93a3e0b/FLAGdbd28198f [2021-11-23 16:50:32,857 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:50:32,858 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/sv-benchmarks/c/eca-programs/Problem102_label35.c [2021-11-23 16:50:33,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data/841357a92/b004f2d23c124b8e8669fe19d93a3e0b/FLAGdbd28198f [2021-11-23 16:50:33,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data/841357a92/b004f2d23c124b8e8669fe19d93a3e0b [2021-11-23 16:50:33,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:50:33,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:50:33,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:50:33,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:50:33,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:50:33,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:33" (1/1) ... [2021-11-23 16:50:33,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f6f6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:33, skipping insertion in model container [2021-11-23 16:50:33,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:33" (1/1) ... [2021-11-23 16:50:33,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:50:34,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:51:03,501 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_e932e4a2-945e-4700-9599-c1da9c3b8d02/sv-benchmarks/c/eca-programs/Problem102_label35.c[5716777,5716790] [2021-11-23 16:51:03,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:51:03,654 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:51:17,994 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_e932e4a2-945e-4700-9599-c1da9c3b8d02/sv-benchmarks/c/eca-programs/Problem102_label35.c[5716777,5716790] [2021-11-23 16:51:17,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:51:23,725 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:51:23,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23 WrapperNode [2021-11-23 16:51:23,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:51:23,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:23,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:51:23,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:51:23,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:24,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:30,505 INFO L137 Inliner]: procedures = 95, calls = 89, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 184295 [2021-11-23 16:51:30,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:30,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:51:30,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:51:30,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:51:30,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:30,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:31,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:31,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:34,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:36,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:36,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:37,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:51:37,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:51:37,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:51:37,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:51:37,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:23" (1/1) ... [2021-11-23 16:51:37,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:51:37,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:51:37,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:51:37,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:51:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:51:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:51:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:51:37,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:51:37,812 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:51:37,814 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:52:54,608 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:52:54,876 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:52:54,890 INFO L158 Benchmark]: Toolchain (without parser) took 141693.25ms. Allocated memory was 702.5MB in the beginning and 12.4GB in the end (delta: 11.7GB). Free memory was 407.2MB in the beginning and 8.8GB in the end (delta: -8.4GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2021-11-23 16:52:54,892 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 77.4MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:52:54,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 50529.81ms. Allocated memory was 702.5MB in the beginning and 7.4GB in the end (delta: 6.7GB). Free memory was 407.2MB in the beginning and 5.4GB in the end (delta: -5.0GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2021-11-23 16:52:54,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 6779.56ms. Allocated memory is still 7.4GB. Free memory was 5.4GB in the beginning and 4.8GB in the end (delta: 634.4MB). Peak memory consumption was 823.1MB. Max. memory is 16.1GB. [2021-11-23 16:52:54,898 INFO L158 Benchmark]: Boogie Preprocessor took 7034.89ms. Allocated memory was 7.4GB in the beginning and 10.0GB in the end (delta: 2.6GB). Free memory was 4.8GB in the beginning and 6.9GB in the end (delta: -2.1GB). Peak memory consumption was 806.4MB. Max. memory is 16.1GB. [2021-11-23 16:52:54,899 INFO L158 Benchmark]: RCFGBuilder took 77344.24ms. Allocated memory was 10.0GB in the beginning and 12.4GB in the end (delta: 2.4GB). Free memory was 6.9GB in the beginning and 8.8GB in the end (delta: -1.9GB). Peak memory consumption was 989.9MB. Max. memory is 16.1GB. [2021-11-23 16:52:54,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 77.4MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 50529.81ms. Allocated memory was 702.5MB in the beginning and 7.4GB in the end (delta: 6.7GB). Free memory was 407.2MB in the beginning and 5.4GB in the end (delta: -5.0GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 6779.56ms. Allocated memory is still 7.4GB. Free memory was 5.4GB in the beginning and 4.8GB in the end (delta: 634.4MB). Peak memory consumption was 823.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 7034.89ms. Allocated memory was 7.4GB in the beginning and 10.0GB in the end (delta: 2.6GB). Free memory was 4.8GB in the beginning and 6.9GB in the end (delta: -2.1GB). Peak memory consumption was 806.4MB. Max. memory is 16.1GB. * RCFGBuilder took 77344.24ms. Allocated memory was 10.0GB in the beginning and 12.4GB in the end (delta: 2.4GB). Free memory was 6.9GB in the beginning and 8.8GB in the end (delta: -1.9GB). Peak memory consumption was 989.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:52:55,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem102_label35.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl --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 edc565b64c291ffeb463c1db23e614b96893e5acce81b877f7d105a3b5fd94db --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:52:57,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:52:57,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:52:57,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:52:57,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:52:57,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:52:57,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:52:57,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:52:57,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:52:57,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:52:57,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:52:57,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:52:57,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:52:57,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:52:58,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:52:58,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:52:58,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:52:58,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:52:58,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:52:58,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:52:58,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:52:58,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:52:58,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:52:58,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:52:58,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:52:58,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:52:58,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:52:58,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:52:58,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:52:58,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:52:58,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:52:58,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:52:58,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:52:58,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:52:58,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:52:58,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:52:58,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:52:58,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:52:58,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:52:58,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:52:58,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:52:58,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:52:58,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:52:58,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:52:58,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:52:58,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:52:58,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:52:58,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:52:58,122 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:52:58,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:52:58,122 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:52:58,122 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:52:58,124 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:52:58,124 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:52:58,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:52:58,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:52:58,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:52:58,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:52:58,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:52:58,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:52:58,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:52:58,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:52:58,128 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:52:58,128 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:52:58,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:52:58,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:52:58,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:52:58,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:52:58,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:52:58,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:52:58,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:52:58,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:52:58,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:52:58,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:52:58,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:52:58,132 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:52:58,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:52:58,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:52:58,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:52:58,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:52:58,134 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc565b64c291ffeb463c1db23e614b96893e5acce81b877f7d105a3b5fd94db [2021-11-23 16:52:58,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:52:58,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:52:58,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:52:58,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:52:58,702 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:52:58,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-programs/Problem102_label35.c [2021-11-23 16:52:58,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data/6537426c7/4561994c2a424ec7bb4641b408b281bc/FLAG85bf4f497 [2021-11-23 16:53:03,320 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:53:03,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/sv-benchmarks/c/eca-programs/Problem102_label35.c [2021-11-23 16:53:03,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data/6537426c7/4561994c2a424ec7bb4641b408b281bc/FLAG85bf4f497 [2021-11-23 16:53:03,751 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/data/6537426c7/4561994c2a424ec7bb4641b408b281bc [2021-11-23 16:53:03,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:53:03,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:53:03,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:53:03,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:53:03,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:53:03,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:53:03" (1/1) ... [2021-11-23 16:53:03,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c98e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:03, skipping insertion in model container [2021-11-23 16:53:03,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:53:03" (1/1) ... [2021-11-23 16:53:03,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:53:05,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:53:33,963 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_e932e4a2-945e-4700-9599-c1da9c3b8d02/sv-benchmarks/c/eca-programs/Problem102_label35.c[5716777,5716790] [2021-11-23 16:53:34,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:53:34,099 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:53:48,326 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_e932e4a2-945e-4700-9599-c1da9c3b8d02/sv-benchmarks/c/eca-programs/Problem102_label35.c[5716777,5716790] [2021-11-23 16:53:48,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:53:53,756 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:53:53,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53 WrapperNode [2021-11-23 16:53:53,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:53:53,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:53:53,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:53:53,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:53:53,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:53:55,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:54:00,859 INFO L137 Inliner]: procedures = 95, calls = 89, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 184212 [2021-11-23 16:54:00,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:54:00,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:54:00,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:54:00,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:54:00,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:54:00,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:54:02,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:54:02,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:54:05,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:54:06,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:54:06,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:54:07,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:54:07,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:54:07,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:54:07,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:54:07,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (1/1) ... [2021-11-23 16:54:07,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:54:07,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:54:07,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:54:07,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:54:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:54:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:54:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:54:07,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:54:08,084 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:54:08,086 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:55:53,300 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:55:53,433 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:55:53,433 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:55:53,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:55:53 BoogieIcfgContainer [2021-11-23 16:55:53,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:55:53,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:55:53,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:55:53,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:55:53,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:53:03" (1/3) ... [2021-11-23 16:55:53,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236ae0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:55:53, skipping insertion in model container [2021-11-23 16:55:53,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:53" (2/3) ... [2021-11-23 16:55:53,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236ae0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:55:53, skipping insertion in model container [2021-11-23 16:55:53,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:55:53" (3/3) ... [2021-11-23 16:55:53,467 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem102_label35.c [2021-11-23 16:55:53,473 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:55:53,474 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:55:53,837 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:55:53,846 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 16:55:53,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:55:54,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 23215 states, 23213 states have (on average 1.8828673588075646) internal successors, (43707), 23214 states have internal predecessors, (43707), 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 16:55:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17919 [2021-11-23 16:55:56,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:56,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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16:55:56,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:55:56,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash -377610064, now seen corresponding path program 1 times [2021-11-23 16:55:57,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:57,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351121228] [2021-11-23 16:55:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:57,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:57,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:57,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:57,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e932e4a2-945e-4700-9599-c1da9c3b8d02/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:56:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:05,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 18135 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:56:05,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:57:07,742 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 16:57:07,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:57:07,743 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:57:07,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351121228] [2021-11-23 16:57:07,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351121228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:57:07,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:57:07,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:57:07,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845067555] [2021-11-23 16:57:07,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:57:07,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:57:07,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:57:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:57:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:57:07,869 INFO L87 Difference]: Start difference. First operand has 23215 states, 23213 states have (on average 1.8828673588075646) internal successors, (43707), 23214 states have internal predecessors, (43707), 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 5972.666666666667) internal successors, (17918), 2 states have internal predecessors, (17918), 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 16:59:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:59:06,497 INFO L93 Difference]: Finished difference Result 67244 states and 127449 transitions. [2021-11-23 16:59:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:59:06,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5972.666666666667) internal successors, (17918), 2 states have internal predecessors, (17918), 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 17918 [2021-11-23 16:59:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:59:06,813 INFO L225 Difference]: With dead ends: 67244 [2021-11-23 16:59:06,813 INFO L226 Difference]: Without dead ends: 43944 [2021-11-23 16:59:06,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17917 GetRequests, 17916 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 16:59:06,860 INFO L933 BasicCegarLoop]: 17129 mSDtfsCounter, 6982 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 61722 mSolverCounterSat, 13287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6982 SdHoareTripleChecker+Valid, 21787 SdHoareTripleChecker+Invalid, 75009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 13287 IncrementalHoareTripleChecker+Valid, 61722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.3s IncrementalHoareTripleChecker+Time [2021-11-23 16:59:06,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6982 Valid, 21787 Invalid, 75009 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [13287 Valid, 61722 Invalid, 0 Unknown, 0 Unchecked, 116.3s Time] [2021-11-23 16:59:06,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43944 states. [2021-11-23 16:59:08,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43944 to 43535. [2021-11-23 16:59:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43535 states, 43534 states have (on average 1.6966738641062158) internal successors, (73863), 43534 states have internal predecessors, (73863), 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 16:59:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43535 states to 43535 states and 73863 transitions. [2021-11-23 16:59:08,316 INFO L78 Accepts]: Start accepts. Automaton has 43535 states and 73863 transitions. Word has length 17918 [2021-11-23 16:59:08,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:59:08,354 INFO L470 AbstractCegarLoop]: Abstraction has 43535 states and 73863 transitions. [2021-11-23 16:59:08,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5972.666666666667) internal successors, (17918), 2 states have internal predecessors, (17918), 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 16:59:08,361 INFO L276 IsEmpty]: Start isEmpty. Operand 43535 states and 73863 transitions.