./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8 --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 9c0bb97f0ddc8ff8c6b996d7f7598b56ed37dc2a .................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:44:03,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:44:03,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:44:03,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:44:03,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:44:03,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:44:03,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:44:03,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:44:03,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:44:03,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:44:03,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:44:03,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:44:03,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:44:03,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:44:03,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:44:03,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:44:03,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:44:03,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:44:03,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:44:03,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:44:03,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:44:03,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:44:03,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:44:03,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:44:03,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:44:03,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:44:03,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:44:03,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:44:03,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:44:03,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:44:03,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:44:03,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:44:03,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:44:03,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:44:03,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:44:03,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:44:03,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:44:03,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:44:03,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:44:03,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:44:03,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:44:03,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:44:03,257 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:44:03,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:44:03,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:44:03,261 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:44:03,261 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:44:03,261 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:44:03,262 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:44:03,262 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:44:03,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:44:03,262 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:44:03,263 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:44:03,263 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:44:03,264 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:44:03,264 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:44:03,264 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:44:03,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:44:03,265 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:44:03,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:44:03,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:44:03,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:44:03,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:44:03,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:44:03,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:44:03,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:44:03,267 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:44:03,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:44:03,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:44:03,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:44:03,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:44:03,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:44:03,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:03,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:44:03,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:44:03,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:44:03,271 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:44:03,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:44:03,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:44:03,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:44:03,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:44:03,272 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_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c0bb97f0ddc8ff8c6b996d7f7598b56ed37dc2a [2021-10-13 06:44:03,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:44:03,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:44:03,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:44:03,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:44:03,600 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:44:03,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/recursive/Addition02.c [2021-10-13 06:44:03,682 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/data/542048668/0931215b4db94a0c890a5808dac1dd97/FLAG9d8a419a0 [2021-10-13 06:44:04,209 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:44:04,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/sv-benchmarks/c/recursive/Addition02.c [2021-10-13 06:44:04,221 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/data/542048668/0931215b4db94a0c890a5808dac1dd97/FLAG9d8a419a0 [2021-10-13 06:44:04,589 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/data/542048668/0931215b4db94a0c890a5808dac1dd97 [2021-10-13 06:44:04,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:44:04,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:44:04,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:04,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:44:04,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:44:04,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181acda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04, skipping insertion in model container [2021-10-13 06:44:04,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:44:04,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:44:04,807 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_558cbcfe-b658-4c16-8664-b1f36cc28b49/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2021-10-13 06:44:04,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:04,818 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:44:04,832 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_558cbcfe-b658-4c16-8664-b1f36cc28b49/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2021-10-13 06:44:04,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:44:04,843 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:44:04,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04 WrapperNode [2021-10-13 06:44:04,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:44:04,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:04,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:44:04,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:44:04,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:44:04,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:44:04,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:44:04,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:44:04,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:44:04,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:44:04,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:44:04,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:44:04,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (1/1) ... [2021-10-13 06:44:04,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:44:04,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:44:04,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:44:04,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:44:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:44:05,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:44:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:44:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:44:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-10-13 06:44:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-10-13 06:44:05,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:44:05,279 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 06:44:05,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:05 BoogieIcfgContainer [2021-10-13 06:44:05,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:44:05,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:44:05,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:44:05,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:44:05,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:44:04" (1/3) ... [2021-10-13 06:44:05,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48055038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:05, skipping insertion in model container [2021-10-13 06:44:05,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:44:04" (2/3) ... [2021-10-13 06:44:05,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48055038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:44:05, skipping insertion in model container [2021-10-13 06:44:05,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:05" (3/3) ... [2021-10-13 06:44:05,289 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition02.c [2021-10-13 06:44:05,294 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:44:05,294 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:44:05,341 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:44:05,348 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, mConcurrency=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 [2021-10-13 06:44:05,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:44:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 06:44:05,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 06:44:05,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:05,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:05,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:05,375 INFO L82 PathProgramCache]: Analyzing trace with hash 731430453, now seen corresponding path program 1 times [2021-10-13 06:44:05,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:05,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508909311] [2021-10-13 06:44:05,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:05,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:05,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:05,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508909311] [2021-10-13 06:44:05,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508909311] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:05,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:05,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 06:44:05,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469649647] [2021-10-13 06:44:05,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 06:44:05,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:05,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 06:44:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:44:05,772 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 06:44:05,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:05,999 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-10-13 06:44:06,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:44:06,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-13 06:44:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:06,011 INFO L225 Difference]: With dead ends: 30 [2021-10-13 06:44:06,012 INFO L226 Difference]: Without dead ends: 20 [2021-10-13 06:44:06,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 06:44:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-13 06:44:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-13 06:44:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 06:44:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-10-13 06:44:06,059 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2021-10-13 06:44:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:06,060 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-10-13 06:44:06,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 06:44:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-10-13 06:44:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 06:44:06,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:06,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:06,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:44:06,064 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:06,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1703056242, now seen corresponding path program 1 times [2021-10-13 06:44:06,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:06,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074406187] [2021-10-13 06:44:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:06,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:44:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:44:06,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:44:06,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074406187] [2021-10-13 06:44:06,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074406187] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:44:06,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:44:06,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 06:44:06,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858905337] [2021-10-13 06:44:06,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:44:06,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:44:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:44:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:06,168 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 06:44:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:44:06,201 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-10-13 06:44:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:44:06,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-13 06:44:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:44:06,203 INFO L225 Difference]: With dead ends: 30 [2021-10-13 06:44:06,204 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 06:44:06,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:44:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 06:44:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-10-13 06:44:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 06:44:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-10-13 06:44:06,219 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2021-10-13 06:44:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:44:06,220 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-10-13 06:44:06,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 06:44:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-10-13 06:44:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 06:44:06,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:44:06,223 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:44:06,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 06:44:06,225 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:44:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:44:06,229 INFO L82 PathProgramCache]: Analyzing trace with hash 280210265, now seen corresponding path program 1 times [2021-10-13 06:44:06,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:44:06,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66578960] [2021-10-13 06:44:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:44:06,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:44:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:44:06,277 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:44:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:44:06,352 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 06:44:06,358 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:44:06,359 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:44:06,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 06:44:06,369 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:44:06,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:44:06 BoogieIcfgContainer [2021-10-13 06:44:06,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:44:06,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:44:06,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:44:06,411 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:44:06,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:44:05" (3/4) ... [2021-10-13 06:44:06,414 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 06:44:06,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:44:06,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:44:06,461 INFO L168 Benchmark]: Toolchain (without parser) took 1867.14 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 59.2 MB in the beginning and 74.6 MB in the end (delta: -15.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:06,462 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:44:06,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.51 ms. Allocated memory is still 92.3 MB. Free memory was 58.9 MB in the beginning and 68.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:06,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.63 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 67.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:06,464 INFO L168 Benchmark]: Boogie Preprocessor took 43.08 ms. Allocated memory is still 92.3 MB. Free memory was 67.2 MB in the beginning and 66.4 MB in the end (delta: 840.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:44:06,464 INFO L168 Benchmark]: RCFGBuilder took 349.55 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 55.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:06,465 INFO L168 Benchmark]: TraceAbstraction took 1128.15 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 55.3 MB in the beginning and 76.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:06,466 INFO L168 Benchmark]: Witness Printer took 47.99 ms. Allocated memory is still 127.9 MB. Free memory was 76.7 MB in the beginning and 74.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:44:06,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.51 ms. Allocated memory is still 92.3 MB. Free memory was 58.9 MB in the beginning and 68.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.63 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 67.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.08 ms. Allocated memory is still 92.3 MB. Free memory was 67.2 MB in the beginning and 66.4 MB in the end (delta: 840.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 349.55 ms. Allocated memory is still 92.3 MB. Free memory was 66.1 MB in the beginning and 55.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1128.15 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 55.3 MB in the beginning and 76.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * Witness Printer took 47.99 ms. Allocated memory is still 127.9 MB. Free memory was 76.7 MB in the beginning and 74.6 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 - CounterExampleResult [Line: 45]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] int m = __VERIFIER_nondet_int(); [L30] COND FALSE !(m < 0 || m > 1073741823) [L35] int n = __VERIFIER_nondet_int(); [L36] COND FALSE !(n < 0 || n > 1073741823) [L41] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L16] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L19] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L20] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L16] COND TRUE n == 0 [L17] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L20] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L20] return addition(m+1, n-1); [L41] RET, EXPR addition(m,n) [L41] int result = addition(m,n); [L42] COND FALSE !(result == m - n) [L45] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1026.6ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 12.9ms, AutomataDifference: 307.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 27 SDslu, 53 SDs, 0 SdLazy, 96 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 119.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 117.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.6ms SsaConstructionTime, 112.8ms SatisfiabilityAnalysisTime, 280.4ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-10-13 06:44:06,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_558cbcfe-b658-4c16-8664-b1f36cc28b49/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...