./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex02-2.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_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/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_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/trex02-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/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_0c157d3d-5592-48ae-a029-84ce9a3514df/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 813a8ddd546bc7f5130f32994d5f684af23ea3f2882f066aeb97d0e96f57ab55 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:14:02,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:14:03,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:14:03,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:14:03,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:14:03,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:14:03,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:14:03,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:14:03,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:14:03,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:14:03,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:14:03,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:14:03,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:14:03,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:14:03,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:14:03,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:14:03,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:14:03,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:14:03,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:14:03,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:14:03,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:14:03,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:14:03,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:14:03,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:14:03,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:14:03,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:14:03,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:14:03,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:14:03,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:14:03,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:14:03,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:14:03,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:14:03,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:14:03,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:14:03,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:14:03,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:14:03,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:14:03,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:14:03,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:14:03,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:14:03,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:14:03,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:14:03,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:14:03,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:14:03,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:14:03,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:14:03,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:14:03,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:14:03,205 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:14:03,205 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:14:03,205 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:14:03,206 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:14:03,207 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:14:03,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:14:03,207 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:14:03,207 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:14:03,208 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:14:03,208 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:14:03,208 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:14:03,208 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:14:03,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:14:03,209 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:14:03,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:14:03,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:14:03,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:14:03,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:14:03,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:14:03,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:14:03,211 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:14:03,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:14:03,211 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:14:03,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:14:03,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:14:03,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:14:03,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:14:03,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:14:03,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:14:03,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:14:03,215 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:14:03,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:14:03,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:14:03,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:14:03,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:14:03,216 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_0c157d3d-5592-48ae-a029-84ce9a3514df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 813a8ddd546bc7f5130f32994d5f684af23ea3f2882f066aeb97d0e96f57ab55 [2021-11-23 17:14:03,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:14:03,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:14:03,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:14:03,572 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:14:03,572 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:14:03,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/loops/trex02-2.c [2021-11-23 17:14:03,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data/83359a70a/2acc5bc8f3254a9b8cc1171e234854e6/FLAG916a68cc4 [2021-11-23 17:14:04,154 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:14:04,155 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/sv-benchmarks/c/loops/trex02-2.c [2021-11-23 17:14:04,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data/83359a70a/2acc5bc8f3254a9b8cc1171e234854e6/FLAG916a68cc4 [2021-11-23 17:14:04,530 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data/83359a70a/2acc5bc8f3254a9b8cc1171e234854e6 [2021-11-23 17:14:04,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:14:04,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:14:04,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:14:04,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:14:04,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:14:04,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388f4362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04, skipping insertion in model container [2021-11-23 17:14:04,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:14:04,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:14:04,733 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_0c157d3d-5592-48ae-a029-84ce9a3514df/sv-benchmarks/c/loops/trex02-2.c[320,333] [2021-11-23 17:14:04,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:14:04,770 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:14:04,804 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_0c157d3d-5592-48ae-a029-84ce9a3514df/sv-benchmarks/c/loops/trex02-2.c[320,333] [2021-11-23 17:14:04,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:14:04,820 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:14:04,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04 WrapperNode [2021-11-23 17:14:04,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:14:04,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:14:04,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:14:04,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:14:04,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,858 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2021-11-23 17:14:04,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:14:04,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:14:04,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:14:04,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:14:04,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:14:04,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:14:04,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:14:04,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:14:04,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:14:04,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:14:04,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:14:04,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:14:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:14:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-11-23 17:14:04,990 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-11-23 17:14:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:14:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:14:04,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:14:05,060 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:14:05,062 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:14:05,185 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:14:05,200 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 17:14:05,205 INFO L158 Benchmark]: Toolchain (without parser) took 669.06ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 48.4MB in the beginning and 79.4MB in the end (delta: -31.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:05,206 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory was 64.4MB in the beginning and 64.3MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:05,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.60ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 48.2MB in the beginning and 90.8MB in the end (delta: -42.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-23 17:14:05,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.12ms. Allocated memory is still 113.2MB. Free memory was 90.8MB in the beginning and 89.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:14:05,210 INFO L158 Benchmark]: Boogie Preprocessor took 36.21ms. Allocated memory is still 113.2MB. Free memory was 89.5MB in the beginning and 88.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:05,211 INFO L158 Benchmark]: RCFGBuilder took 305.13ms. Allocated memory is still 113.2MB. Free memory was 88.5MB in the beginning and 79.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:14:05,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory was 64.4MB in the beginning and 64.3MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.60ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 48.2MB in the beginning and 90.8MB in the end (delta: -42.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.12ms. Allocated memory is still 113.2MB. Free memory was 90.8MB in the beginning and 89.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.21ms. Allocated memory is still 113.2MB. Free memory was 89.5MB in the beginning and 88.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 305.13ms. Allocated memory is still 113.2MB. Free memory was 88.5MB in the beginning and 79.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. 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 17:14:05,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/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_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/trex02-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/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_0c157d3d-5592-48ae-a029-84ce9a3514df/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 813a8ddd546bc7f5130f32994d5f684af23ea3f2882f066aeb97d0e96f57ab55 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:14:08,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:14:08,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:14:08,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:14:08,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:14:08,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:14:08,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:14:08,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:14:08,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:14:08,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:14:08,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:14:08,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:14:08,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:14:08,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:14:08,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:14:08,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:14:08,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:14:08,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:14:08,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:14:08,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:14:08,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:14:08,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:14:08,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:14:08,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:14:08,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:14:08,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:14:08,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:14:08,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:14:08,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:14:08,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:14:08,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:14:08,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:14:08,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:14:08,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:14:08,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:14:08,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:14:08,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:14:08,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:14:08,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:14:08,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:14:08,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:14:08,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:14:08,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:14:08,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:14:08,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:14:08,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:14:08,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:14:08,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:14:08,182 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:14:08,182 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:14:08,182 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:14:08,182 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:14:08,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:14:08,183 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:14:08,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:14:08,184 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:14:08,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:14:08,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:14:08,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:14:08,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:14:08,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:14:08,185 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:14:08,185 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:14:08,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:14:08,185 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:14:08,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:14:08,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:14:08,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:14:08,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:14:08,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:14:08,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:14:08,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:14:08,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:14:08,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:14:08,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:14:08,189 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:14:08,189 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:14:08,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:14:08,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:14:08,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:14:08,191 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_0c157d3d-5592-48ae-a029-84ce9a3514df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 813a8ddd546bc7f5130f32994d5f684af23ea3f2882f066aeb97d0e96f57ab55 [2021-11-23 17:14:08,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:14:08,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:14:08,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:14:08,611 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:14:08,611 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:14:08,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/loops/trex02-2.c [2021-11-23 17:14:08,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data/1410a43f5/f2396ad543fb4a92af99dea5593fe809/FLAGed5595260 [2021-11-23 17:14:09,232 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:14:09,233 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/sv-benchmarks/c/loops/trex02-2.c [2021-11-23 17:14:09,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data/1410a43f5/f2396ad543fb4a92af99dea5593fe809/FLAGed5595260 [2021-11-23 17:14:09,587 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/data/1410a43f5/f2396ad543fb4a92af99dea5593fe809 [2021-11-23 17:14:09,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:14:09,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:14:09,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:14:09,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:14:09,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:14:09,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce71b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09, skipping insertion in model container [2021-11-23 17:14:09,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:14:09,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:14:09,757 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_0c157d3d-5592-48ae-a029-84ce9a3514df/sv-benchmarks/c/loops/trex02-2.c[320,333] [2021-11-23 17:14:09,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:14:09,779 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:14:09,791 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_0c157d3d-5592-48ae-a029-84ce9a3514df/sv-benchmarks/c/loops/trex02-2.c[320,333] [2021-11-23 17:14:09,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:14:09,823 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:14:09,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09 WrapperNode [2021-11-23 17:14:09,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:14:09,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:14:09,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:14:09,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:14:09,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,880 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2021-11-23 17:14:09,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:14:09,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:14:09,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:14:09,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:14:09,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:14:09,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:14:09,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:14:09,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:14:09,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (1/1) ... [2021-11-23 17:14:09,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:14:09,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:14:09,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:14:09,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:14:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:14:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-11-23 17:14:09,973 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-11-23 17:14:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:14:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:14:09,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:14:10,036 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:14:10,037 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:14:10,165 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:14:10,170 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:14:10,170 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:14:10,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:14:10 BoogieIcfgContainer [2021-11-23 17:14:10,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:14:10,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:14:10,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:14:10,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:14:10,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:14:09" (1/3) ... [2021-11-23 17:14:10,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c836ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:14:10, skipping insertion in model container [2021-11-23 17:14:10,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:09" (2/3) ... [2021-11-23 17:14:10,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c836ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:14:10, skipping insertion in model container [2021-11-23 17:14:10,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:14:10" (3/3) ... [2021-11-23 17:14:10,179 INFO L111 eAbstractionObserver]: Analyzing ICFG trex02-2.c [2021-11-23 17:14:10,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:14:10,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:14:10,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:14:10,239 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 17:14:10,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:14:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 17:14:10,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:14:10,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:10,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:14:10,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:14:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:10,265 INFO L85 PathProgramCache]: Analyzing trace with hash 949166183, now seen corresponding path program 1 times [2021-11-23 17:14:10,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:10,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483364361] [2021-11-23 17:14:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:10,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:10,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:10,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:14:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:14:10,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 17:14:10,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:14:10,442 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 17:14:10,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:14:10,443 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:14:10,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483364361] [2021-11-23 17:14:10,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483364361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:14:10,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:14:10,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:14:10,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132005054] [2021-11-23 17:14:10,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:14:10,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 17:14:10,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:14:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 17:14:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:14:10,481 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 17:14:10,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:10,498 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-11-23 17:14:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 17:14:10,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-23 17:14:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:10,509 INFO L225 Difference]: With dead ends: 25 [2021-11-23 17:14:10,509 INFO L226 Difference]: Without dead ends: 13 [2021-11-23 17:14:10,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:14:10,516 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:10,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:14:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-23 17:14:10,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-23 17:14:10,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 17:14:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-23 17:14:10,571 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2021-11-23 17:14:10,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:10,572 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-23 17:14:10,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 17:14:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-23 17:14:10,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:14:10,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:10,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:14:10,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 17:14:10,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:10,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:14:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash 948808691, now seen corresponding path program 1 times [2021-11-23 17:14:10,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440005612] [2021-11-23 17:14:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:10,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:10,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:10,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:10,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:14:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:14:10,820 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 17:14:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 17:14:10,848 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 17:14:10,848 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 17:14:10,850 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 17:14:10,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:11,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:11,078 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 17:14:11,083 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 17:14:11,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 05:14:11 BoogieIcfgContainer [2021-11-23 17:14:11,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 17:14:11,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 17:14:11,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 17:14:11,111 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 17:14:11,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:14:10" (3/4) ... [2021-11-23 17:14:11,113 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 17:14:11,158 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 17:14:11,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 17:14:11,159 INFO L158 Benchmark]: Toolchain (without parser) took 1568.58ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 50.8MB in the beginning and 63.9MB in the end (delta: -13.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2021-11-23 17:14:11,160 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:11,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.42ms. Allocated memory is still 69.2MB. Free memory was 50.6MB in the beginning and 52.9MB in the end (delta: -2.3MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-11-23 17:14:11,161 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.17ms. Allocated memory is still 69.2MB. Free memory was 52.9MB in the beginning and 51.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:14:11,161 INFO L158 Benchmark]: Boogie Preprocessor took 25.14ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 50.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:11,162 INFO L158 Benchmark]: RCFGBuilder took 264.72ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 41.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:14:11,162 INFO L158 Benchmark]: TraceAbstraction took 934.45ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 41.1MB in the beginning and 65.6MB in the end (delta: -24.4MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2021-11-23 17:14:11,163 INFO L158 Benchmark]: Witness Printer took 47.85ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 63.9MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:14:11,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 69.2MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.42ms. Allocated memory is still 69.2MB. Free memory was 50.6MB in the beginning and 52.9MB in the end (delta: -2.3MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.17ms. Allocated memory is still 69.2MB. Free memory was 52.9MB in the beginning and 51.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.14ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 50.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 264.72ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 41.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 934.45ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 41.1MB in the beginning and 65.6MB in the end (delta: -24.4MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Witness Printer took 47.85ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 63.9MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x; VAL [x=0] [L22] x=__VERIFIER_nondet_int() [L23] COND FALSE !(x > 0) VAL [x=2147483648] [L28] CALL __VERIFIER_assert(x==0) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, x=2147483648] [L7] reach_error() VAL [\old(cond)=0, cond=0, x=2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 17:14:11,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c157d3d-5592-48ae-a029-84ce9a3514df/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE