./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta --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 24e4ab1beddf6765367789e618c0879bf278eaa2a42c207f454e869025cceb0b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:37:59,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:59,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:59,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:59,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:59,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:59,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:59,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:59,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:59,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:59,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:59,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:59,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:59,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:59,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:59,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:59,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:59,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:59,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:59,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:59,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:59,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:59,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:59,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:59,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:59,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:59,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:59,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:59,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:59,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:59,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:59,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:59,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:59,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:59,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:59,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:59,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:59,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:59,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:59,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:59,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:59,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:37:59,233 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:59,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:59,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:59,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:59,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:59,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:59,236 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:59,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:59,236 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:59,236 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:37:59,238 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:59,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:59,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:37:59,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:37:59,239 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:59,239 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:37:59,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:37:59,239 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:37:59,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:59,241 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:37:59,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:59,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:37:59,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:59,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:59,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:59,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:59,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:37:59,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:59,245 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:59,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:59,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:59,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:59,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:59,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:59,247 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:37:59,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:59,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:59,247 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:37:59,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:37:59,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:59,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:59,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24e4ab1beddf6765367789e618c0879bf278eaa2a42c207f454e869025cceb0b [2022-10-17 17:37:59,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:59,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:59,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:59,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:59,590 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:59,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i [2022-10-17 17:37:59,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/data/cfac5da98/5a9b654d22e2400c95ea6c97510c5b74/FLAGc8c1963f9 [2022-10-17 17:38:00,106 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:38:00,107 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i [2022-10-17 17:38:00,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/data/cfac5da98/5a9b654d22e2400c95ea6c97510c5b74/FLAGc8c1963f9 [2022-10-17 17:38:00,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/data/cfac5da98/5a9b654d22e2400c95ea6c97510c5b74 [2022-10-17 17:38:00,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:38:00,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:38:00,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:00,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:38:00,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:38:00,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34299ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00, skipping insertion in model container [2022-10-17 17:38:00,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:38:00,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:38:00,784 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_ef8b2974-8197-43f9-919a-17c417a0aa05/sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i[824,837] [2022-10-17 17:38:00,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:00,812 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:38:00,826 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_ef8b2974-8197-43f9-919a-17c417a0aa05/sv-benchmarks/c/ldv-regression/nested_structure_noptr-1.i[824,837] [2022-10-17 17:38:00,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:00,853 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:38:00,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00 WrapperNode [2022-10-17 17:38:00,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:00,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:00,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:38:00,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:38:00,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,895 INFO L138 Inliner]: procedures = 15, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-10-17 17:38:00,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:00,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:38:00,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:38:00,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:38:00,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,930 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:38:00,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:38:00,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:38:00,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:38:00,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (1/1) ... [2022-10-17 17:38:00,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:00,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:00,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:38:00,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:38:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:38:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:38:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:38:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:38:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:38:01,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:38:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:38:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:38:01,083 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:38:01,085 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:38:01,186 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:38:01,208 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:38:01,209 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:38:01,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:01 BoogieIcfgContainer [2022-10-17 17:38:01,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:38:01,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:38:01,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:38:01,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:38:01,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:38:00" (1/3) ... [2022-10-17 17:38:01,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ccf7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:01, skipping insertion in model container [2022-10-17 17:38:01,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:00" (2/3) ... [2022-10-17 17:38:01,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ccf7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:01, skipping insertion in model container [2022-10-17 17:38:01,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:01" (3/3) ... [2022-10-17 17:38:01,222 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-1.i [2022-10-17 17:38:01,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:38:01,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:38:01,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:38:01,293 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e642363, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:38:01,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:38:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2022-10-17 17:38:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:38:01,305 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:01,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:38:01,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2022-10-17 17:38:01,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:01,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814807970] [2022-10-17 17:38:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:01,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:01,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814807970] [2022-10-17 17:38:01,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814807970] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:01,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:01,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:38:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023140555] [2022-10-17 17:38:01,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:01,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:38:01,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:38:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:38:01,860 INFO L87 Difference]: Start difference. First operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-10-17 17:38:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:01,914 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-10-17 17:38:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:38:01,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-10-17 17:38:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:01,922 INFO L225 Difference]: With dead ends: 8 [2022-10-17 17:38:01,932 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:38:01,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:38:01,939 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:01,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:38:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:38:01,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:38:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-10-17 17:38:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:38:01,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2022-10-17 17:38:01,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:01,996 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:38:01,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-10-17 17:38:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:38:01,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:38:01,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:38:02,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:38:02,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:38:02,015 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:38:02,015 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:38:02,016 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-10-17 17:38:02,016 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-10-17 17:38:02,016 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2022-10-17 17:38:02,016 INFO L895 garLoopResultBuilder]: At program point L14-2(lines 13 18) the Hoare annotation is: (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) [2022-10-17 17:38:02,021 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 17:38:02,026 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:38:02,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:38:02 BoogieIcfgContainer [2022-10-17 17:38:02,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:38:02,056 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:38:02,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:38:02,057 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:38:02,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:01" (3/4) ... [2022-10-17 17:38:02,061 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:38:02,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-10-17 17:38:02,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-10-17 17:38:02,074 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-10-17 17:38:02,074 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:38:02,113 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:38:02,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:38:02,114 INFO L158 Benchmark]: Toolchain (without parser) took 1620.92ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 50.8MB in the beginning and 81.3MB in the end (delta: -30.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:38:02,114 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory is still 67.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:38:02,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.31ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 50.6MB in the beginning and 92.6MB in the end (delta: -41.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-10-17 17:38:02,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.41ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 91.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:38:02,115 INFO L158 Benchmark]: Boogie Preprocessor took 35.58ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 90.1MB in the end (delta: 979.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:38:02,116 INFO L158 Benchmark]: RCFGBuilder took 278.24ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 80.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:38:02,116 INFO L158 Benchmark]: TraceAbstraction took 841.42ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 83.6MB in the end (delta: -4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:38:02,117 INFO L158 Benchmark]: Witness Printer took 56.67ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 81.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:38:02,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory is still 67.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.31ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 50.6MB in the beginning and 92.6MB in the end (delta: -41.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.41ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 91.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.58ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 90.1MB in the end (delta: 979.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 278.24ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 80.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 841.42ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 83.6MB in the end (delta: -4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 56.67ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 81.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 4 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-10-17 17:38:02,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef8b2974-8197-43f9-919a-17c417a0aa05/bin/utaipan-G1rejxKTta/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 Writing output log to file Ultimate.log Result: TRUE