./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_union_cast-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_union_cast-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE --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 06d8e972fd3570f0a6f863e33caed64af1841db41ea5253d322a4e84273bf524 ...................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:08:44,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:08:44,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:08:44,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:08:44,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:08:44,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:08:44,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:08:44,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:08:44,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:08:44,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:08:44,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:08:44,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:08:44,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:08:44,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:08:44,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:08:44,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:08:44,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:08:44,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:08:44,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:08:44,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:08:44,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:08:44,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:08:44,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:08:44,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:08:44,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:08:44,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:08:44,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:08:44,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:08:44,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:08:44,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:08:44,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:08:44,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:08:44,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:08:44,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:08:44,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:08:44,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:08:44,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:08:44,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:08:44,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:08:44,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:08:44,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:08:44,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:08:44,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:08:44,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:08:44,266 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:08:44,267 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:08:44,267 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:08:44,267 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:08:44,267 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:08:44,268 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:08:44,268 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:08:44,268 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:08:44,268 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:08:44,269 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:08:44,269 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:08:44,269 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:08:44,269 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:08:44,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:08:44,270 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:08:44,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:08:44,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:08:44,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:08:44,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:08:44,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:08:44,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:08:44,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:08:44,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:08:44,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:08:44,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:08:44,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:08:44,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:08:44,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:08:44,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:08:44,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:08:44,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:08:44,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:08:44,275 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:08:44,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:08:44,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:08:44,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:08:44,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:08:44,276 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_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d8e972fd3570f0a6f863e33caed64af1841db41ea5253d322a4e84273bf524 [2021-10-24 11:08:44,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:08:44,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:08:44,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:08:44,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:08:44,540 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:08:44,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-regression/test_union_cast-1.i [2021-10-24 11:08:44,612 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/data/58fd948b8/25511c8eca12421fa15ee3f762192525/FLAG9c6577f9f [2021-10-24 11:08:45,031 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:08:45,032 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/sv-benchmarks/c/ldv-regression/test_union_cast-1.i [2021-10-24 11:08:45,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/data/58fd948b8/25511c8eca12421fa15ee3f762192525/FLAG9c6577f9f [2021-10-24 11:08:45,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/data/58fd948b8/25511c8eca12421fa15ee3f762192525 [2021-10-24 11:08:45,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:08:45,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:08:45,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:08:45,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:08:45,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:08:45,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478bc198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45, skipping insertion in model container [2021-10-24 11:08:45,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:08:45,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:08:45,615 WARN L228 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_6eb4d493-0e2e-43cd-a664-a8e693664c88/sv-benchmarks/c/ldv-regression/test_union_cast-1.i[817,830] [2021-10-24 11:08:45,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:08:45,649 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:08:45,662 WARN L228 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_6eb4d493-0e2e-43cd-a664-a8e693664c88/sv-benchmarks/c/ldv-regression/test_union_cast-1.i[817,830] [2021-10-24 11:08:45,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:08:45,691 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:08:45,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45 WrapperNode [2021-10-24 11:08:45,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:08:45,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:08:45,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:08:45,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:08:45,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:08:45,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:08:45,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:08:45,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:08:45,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:08:45,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:08:45,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:08:45,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:08:45,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (1/1) ... [2021-10-24 11:08:45,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:08:45,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:08:45,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:08:45,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:08:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:08:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:08:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 11:08:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-24 11:08:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:08:45,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:08:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 11:08:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 11:08:46,126 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:08:46,126 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-24 11:08:46,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:08:46 BoogieIcfgContainer [2021-10-24 11:08:46,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:08:46,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:08:46,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:08:46,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:08:46,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:08:45" (1/3) ... [2021-10-24 11:08:46,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd0ab7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:08:46, skipping insertion in model container [2021-10-24 11:08:46,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:08:45" (2/3) ... [2021-10-24 11:08:46,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd0ab7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:08:46, skipping insertion in model container [2021-10-24 11:08:46,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:08:46" (3/3) ... [2021-10-24 11:08:46,138 INFO L111 eAbstractionObserver]: Analyzing ICFG test_union_cast-1.i [2021-10-24 11:08:46,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:08:46,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:08:46,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:08:46,239 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 [2021-10-24 11:08:46,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:08:46,252 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) [2021-10-24 11:08:46,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 11:08:46,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:08:46,258 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 11:08:46,258 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:08:46,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:08:46,264 INFO L82 PathProgramCache]: Analyzing trace with hash 46290, now seen corresponding path program 1 times [2021-10-24 11:08:46,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:08:46,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428646807] [2021-10-24 11:08:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:08:46,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:08:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:08:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:08:46,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:08:46,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428646807] [2021-10-24 11:08:46,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428646807] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:08:46,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:08:46,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:08:46,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809757915] [2021-10-24 11:08:46,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:08:46,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:08:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:08:46,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:08:46,571 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) [2021-10-24 11:08:46,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:08:46,593 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-10-24 11:08:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:08:46,596 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 [2021-10-24 11:08:46,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:08:46,601 INFO L225 Difference]: With dead ends: 8 [2021-10-24 11:08:46,602 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 11:08:46,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:08:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 11:08:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 11:08:46,626 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) [2021-10-24 11:08:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 11:08:46,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2021-10-24 11:08:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:08:46,628 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 11:08:46,629 INFO L471 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) [2021-10-24 11:08:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 11:08:46,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 11:08:46,632 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:08:46,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 11:08:46,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 11:08:46,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:08:46,649 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 11:08:46,649 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 11:08:46,649 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-24 11:08:46,650 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-24 11:08:46,650 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-10-24 11:08:46,650 INFO L853 garLoopResultBuilder]: At program point L14-2(lines 13 18) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-24 11:08:46,655 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:08:46,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:08:46 BoogieIcfgContainer [2021-10-24 11:08:46,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:08:46,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:08:46,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:08:46,674 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:08:46,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:08:46" (3/4) ... [2021-10-24 11:08:46,678 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 11:08:46,690 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-24 11:08:46,691 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-24 11:08:46,692 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 11:08:46,692 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:08:46,744 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:08:46,745 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:08:46,747 INFO L168 Benchmark]: Toolchain (without parser) took 1298.03 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 75.9 MB in the beginning and 78.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:46,747 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 62.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:08:46,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.66 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 75.9 MB in the beginning and 113.8 MB in the end (delta: -38.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:46,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.40 ms. Allocated memory is still 140.5 MB. Free memory was 113.8 MB in the beginning and 112.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:08:46,749 INFO L168 Benchmark]: Boogie Preprocessor took 42.50 ms. Allocated memory is still 140.5 MB. Free memory was 112.2 MB in the beginning and 111.2 MB in the end (delta: 991.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:46,750 INFO L168 Benchmark]: RCFGBuilder took 348.94 ms. Allocated memory is still 140.5 MB. Free memory was 111.2 MB in the beginning and 100.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:46,750 INFO L168 Benchmark]: TraceAbstraction took 538.92 ms. Allocated memory is still 140.5 MB. Free memory was 100.2 MB in the beginning and 80.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:46,751 INFO L168 Benchmark]: Witness Printer took 71.63 ms. Allocated memory is still 140.5 MB. Free memory was 80.4 MB in the beginning and 78.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:08:46,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 62.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.66 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 75.9 MB in the beginning and 113.8 MB in the end (delta: -38.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.40 ms. Allocated memory is still 140.5 MB. Free memory was 113.8 MB in the beginning and 112.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.50 ms. Allocated memory is still 140.5 MB. Free memory was 112.2 MB in the beginning and 111.2 MB in the end (delta: 991.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 348.94 ms. Allocated memory is still 140.5 MB. Free memory was 111.2 MB in the beginning and 100.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 538.92 ms. Allocated memory is still 140.5 MB. Free memory was 100.2 MB in the beginning and 80.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 71.63 ms. Allocated memory is still 140.5 MB. Free memory was 80.4 MB in the beginning and 78.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 424.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.7ms, AutomataDifference: 58.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 16.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 8.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 4 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.8ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 5.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 6.7ms SsaConstructionTime, 49.7ms SatisfiabilityAnalysisTime, 121.7ms 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: !(0 == cond) RESULT: Ultimate proved your program to be correct! [2021-10-24 11:08:46,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb4d493-0e2e-43cd-a664-a8e693664c88/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...