./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/diamond_2-2.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_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/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_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/diamond_2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/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_42ab651d-6b35-4090-b79b-90572b0a8c31/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 3a7cdc2671d7dcfcceedceb0ed408847d70d2b4e ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/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_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/diamond_2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/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 3a7cdc2671d7dcfcceedceb0ed408847d70d2b4e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:37:35,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:37:35,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:37:35,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:37:35,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:37:35,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:37:35,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:37:35,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:37:35,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:37:35,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:37:35,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:37:35,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:37:35,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:37:35,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:37:35,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:37:35,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:37:35,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:37:35,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:37:35,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:37:35,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:37:35,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:37:35,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:37:35,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:37:35,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:37:35,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:37:35,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:37:35,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:37:35,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:37:35,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:37:35,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:37:35,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:37:35,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:37:35,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:37:35,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:37:35,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:37:35,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:37:35,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:37:35,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:37:35,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:37:35,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:37:35,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:37:35,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:37:35,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:37:35,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:37:35,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:37:35,317 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:37:35,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:37:35,318 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:37:35,318 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:37:35,318 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:37:35,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:37:35,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:37:35,320 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:37:35,321 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:37:35,321 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:37:35,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:37:35,322 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:37:35,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:37:35,323 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:37:35,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:37:35,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:37:35,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:37:35,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:37:35,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:37:35,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:37:35,325 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:37:35,326 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:37:35,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:37:35,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:37:35,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:37:35,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:37:35,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:37:35,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:37:35,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:37:35,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:37:35,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:37:35,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:37:35,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:37:35,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:37:35,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:37:35,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:37:35,330 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_42ab651d-6b35-4090-b79b-90572b0a8c31/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a7cdc2671d7dcfcceedceb0ed408847d70d2b4e [2021-10-13 07:37:35,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:37:35,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:37:35,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:37:35,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:37:35,727 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:37:35,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-acceleration/diamond_2-2.c [2021-10-13 07:37:35,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data/b2ca10621/539f0e30a9a34f50ae69042797d45ea3/FLAGfe6629742 [2021-10-13 07:37:36,444 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:37:36,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/sv-benchmarks/c/loop-acceleration/diamond_2-2.c [2021-10-13 07:37:36,456 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data/b2ca10621/539f0e30a9a34f50ae69042797d45ea3/FLAGfe6629742 [2021-10-13 07:37:36,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data/b2ca10621/539f0e30a9a34f50ae69042797d45ea3 [2021-10-13 07:37:36,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:37:36,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:37:36,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:37:36,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:37:36,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:37:36,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:36" (1/1) ... [2021-10-13 07:37:36,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac9af1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36, skipping insertion in model container [2021-10-13 07:37:36,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:36" (1/1) ... [2021-10-13 07:37:36,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:37:36,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:37:37,071 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_42ab651d-6b35-4090-b79b-90572b0a8c31/sv-benchmarks/c/loop-acceleration/diamond_2-2.c[373,386] [2021-10-13 07:37:37,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:37:37,119 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:37:37,139 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_42ab651d-6b35-4090-b79b-90572b0a8c31/sv-benchmarks/c/loop-acceleration/diamond_2-2.c[373,386] [2021-10-13 07:37:37,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:37:37,190 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:37:37,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37 WrapperNode [2021-10-13 07:37:37,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:37:37,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:37:37,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:37:37,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:37:37,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:37:37,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:37:37,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:37:37,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:37:37,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:37:37,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:37:37,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:37:37,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:37:37,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (1/1) ... [2021-10-13 07:37:37,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:37:37,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:37:37,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:37:37,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:37:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:37:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:37:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:37:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:37:38,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:37:38,153 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:37:38,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:38 BoogieIcfgContainer [2021-10-13 07:37:38,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:37:38,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:37:38,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:37:38,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:37:38,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:36" (1/3) ... [2021-10-13 07:37:38,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540765ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:38, skipping insertion in model container [2021-10-13 07:37:38,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:37" (2/3) ... [2021-10-13 07:37:38,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540765ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:38, skipping insertion in model container [2021-10-13 07:37:38,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:38" (3/3) ... [2021-10-13 07:37:38,177 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2021-10-13 07:37:38,188 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:37:38,188 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:37:38,265 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:37:38,277 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 07:37:38,277 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:37:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-10-13 07:37:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:37:38,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:38,314 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:37:38,316 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:37:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:38,329 INFO L82 PathProgramCache]: Analyzing trace with hash 3682167, now seen corresponding path program 1 times [2021-10-13 07:37:38,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:37:38,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831703617] [2021-10-13 07:37:38,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:38,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:37:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:38,609 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 07:37:38,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:37:38,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831703617] [2021-10-13 07:37:38,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831703617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:38,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:38,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:37:38,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158618497] [2021-10-13 07:37:38,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:38,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:37:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:38,648 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-13 07:37:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:38,686 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-13 07:37:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:38,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-10-13 07:37:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:38,700 INFO L225 Difference]: With dead ends: 13 [2021-10-13 07:37:38,700 INFO L226 Difference]: Without dead ends: 6 [2021-10-13 07:37:38,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-13 07:37:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-13 07:37:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) 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) [2021-10-13 07:37:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-13 07:37:38,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-10-13 07:37:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:38,744 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-13 07:37:38,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-13 07:37:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-13 07:37:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:37:38,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:38,746 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:37:38,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:37:38,747 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:37:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash 114266359, now seen corresponding path program 1 times [2021-10-13 07:37:38,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:37:38,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101502814] [2021-10-13 07:37:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:38,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:37:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:39,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:37:39,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101502814] [2021-10-13 07:37:39,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101502814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:37:39,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594308190] [2021-10-13 07:37:39,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:39,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:37:39,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:37:39,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:37:39,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:37:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:39,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 07:37:39,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:40,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:42,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594308190] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:42,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [88154930] [2021-10-13 07:37:42,253 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-13 07:37:42,255 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:37:42,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:37:42,269 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:37:42,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:37:42,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:42,315 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:37:42,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:42,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:37:42,318 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:37:42,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:42,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:37:42,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-13 07:37:42,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:37:42,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:37:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:37:42,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:37:42,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:42,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:37:42,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:42,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:37:42,376 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:37:42,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:37:42,402 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:42,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:42,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-13 07:37:42,406 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:37:42,426 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:119, output treesize:122 [2021-10-13 07:37:42,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:42,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:37:42,629 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_10| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:37:42,634 INFO L168 Benchmark]: Toolchain (without parser) took 5826.83 ms. Allocated memory was 117.4 MB in the beginning and 165.7 MB in the end (delta: 48.2 MB). Free memory was 78.1 MB in the beginning and 138.8 MB in the end (delta: -60.7 MB). Peak memory consumption was 84.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:42,635 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 117.4 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:37:42,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.23 ms. Allocated memory is still 117.4 MB. Free memory was 77.9 MB in the beginning and 91.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:42,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.85 ms. Allocated memory is still 117.4 MB. Free memory was 91.1 MB in the beginning and 89.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:42,637 INFO L168 Benchmark]: Boogie Preprocessor took 45.20 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 88.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:42,638 INFO L168 Benchmark]: RCFGBuilder took 846.84 ms. Allocated memory is still 117.4 MB. Free memory was 87.9 MB in the beginning and 69.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:42,639 INFO L168 Benchmark]: TraceAbstraction took 4466.58 ms. Allocated memory was 117.4 MB in the beginning and 165.7 MB in the end (delta: 48.2 MB). Free memory was 68.6 MB in the beginning and 138.8 MB in the end (delta: -70.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:42,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 117.4 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.23 ms. Allocated memory is still 117.4 MB. Free memory was 77.9 MB in the beginning and 91.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.85 ms. Allocated memory is still 117.4 MB. Free memory was 91.1 MB in the beginning and 89.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.20 ms. Allocated memory is still 117.4 MB. Free memory was 89.5 MB in the beginning and 88.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 846.84 ms. Allocated memory is still 117.4 MB. Free memory was 87.9 MB in the beginning and 69.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4466.58 ms. Allocated memory was 117.4 MB in the beginning and 165.7 MB in the end (delta: 48.2 MB). Free memory was 68.6 MB in the beginning and 138.8 MB in the end (delta: -70.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:37:42,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:37:45,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:37:45,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:37:45,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:37:45,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:37:45,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:37:45,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:37:45,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:37:45,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:37:45,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:37:45,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:37:45,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:37:45,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:37:45,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:37:45,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:37:45,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:37:45,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:37:45,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:37:45,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:37:45,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:37:45,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:37:45,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:37:45,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:37:45,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:37:45,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:37:45,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:37:45,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:37:45,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:37:45,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:37:45,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:37:45,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:37:45,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:37:45,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:37:45,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:37:45,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:37:45,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:37:45,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:37:45,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:37:45,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:37:45,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:37:45,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:37:45,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:37:45,969 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:37:45,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:37:45,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:37:45,972 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:37:45,972 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:37:45,972 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:37:45,973 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:37:45,973 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:37:45,973 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:37:45,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:37:45,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:37:45,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:37:45,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:37:45,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:37:45,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:37:45,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:37:45,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:37:45,979 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:37:45,980 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:37:45,980 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:37:45,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:37:45,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:37:45,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:37:45,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:37:45,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:37:45,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:37:45,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:37:45,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:37:45,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:37:45,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:37:45,983 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:37:45,984 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:37:45,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:37:45,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:37:45,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:37:45,985 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a7cdc2671d7dcfcceedceb0ed408847d70d2b4e [2021-10-13 07:37:46,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:37:46,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:37:46,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:37:46,558 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:37:46,559 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:37:46,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-acceleration/diamond_2-2.c [2021-10-13 07:37:46,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data/2670f9562/52edd1e24f5c49469325fee71e5cd885/FLAG6dbcfba74 [2021-10-13 07:37:47,220 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:37:47,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/sv-benchmarks/c/loop-acceleration/diamond_2-2.c [2021-10-13 07:37:47,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data/2670f9562/52edd1e24f5c49469325fee71e5cd885/FLAG6dbcfba74 [2021-10-13 07:37:47,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/data/2670f9562/52edd1e24f5c49469325fee71e5cd885 [2021-10-13 07:37:47,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:37:47,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:37:47,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:37:47,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:37:47,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:37:47,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:47,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2daa2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47, skipping insertion in model container [2021-10-13 07:37:47,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:47,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:37:47,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:37:47,772 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_42ab651d-6b35-4090-b79b-90572b0a8c31/sv-benchmarks/c/loop-acceleration/diamond_2-2.c[373,386] [2021-10-13 07:37:47,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:37:47,810 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:37:47,825 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_42ab651d-6b35-4090-b79b-90572b0a8c31/sv-benchmarks/c/loop-acceleration/diamond_2-2.c[373,386] [2021-10-13 07:37:47,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:37:47,854 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:37:47,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47 WrapperNode [2021-10-13 07:37:47,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:37:47,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:37:47,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:37:47,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:37:47,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:47,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:47,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:37:47,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:37:47,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:37:47,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:37:47,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:47,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:47,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:47,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:47,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:47,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:48,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:48,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:37:48,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:37:48,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:37:48,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:37:48,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (1/1) ... [2021-10-13 07:37:48,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:37:48,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:37:48,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:37:48,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:37:48,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:37:48,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:37:48,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:37:48,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:37:48,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:37:48,448 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:37:48,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:48 BoogieIcfgContainer [2021-10-13 07:37:48,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:37:48,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:37:48,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:37:48,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:37:48,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:47" (1/3) ... [2021-10-13 07:37:48,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b36988a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:48, skipping insertion in model container [2021-10-13 07:37:48,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:47" (2/3) ... [2021-10-13 07:37:48,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b36988a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:48, skipping insertion in model container [2021-10-13 07:37:48,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:48" (3/3) ... [2021-10-13 07:37:48,463 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2021-10-13 07:37:48,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:37:48,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:37:48,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:37:48,542 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 07:37:48,542 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:37:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 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) [2021-10-13 07:37:48,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:37:48,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:48,583 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:37:48,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:37:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:48,604 INFO L82 PathProgramCache]: Analyzing trace with hash 891600039, now seen corresponding path program 1 times [2021-10-13 07:37:48,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:48,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108356277] [2021-10-13 07:37:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:48,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:48,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:48,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:48,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:37:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:48,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:37:48,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:48,888 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 07:37:48,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:48,936 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 07:37:48,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:48,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108356277] [2021-10-13 07:37:48,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108356277] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:48,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:48,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:37:48,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887748784] [2021-10-13 07:37:48,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:37:48,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:48,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:37:48,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:37:48,985 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:49,006 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2021-10-13 07:37:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:37:49,008 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:37:49,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:49,020 INFO L225 Difference]: With dead ends: 27 [2021-10-13 07:37:49,020 INFO L226 Difference]: Without dead ends: 17 [2021-10-13 07:37:49,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:37:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-13 07:37:49,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-13 07:37:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2021-10-13 07:37:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2021-10-13 07:37:49,067 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2021-10-13 07:37:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:49,069 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2021-10-13 07:37:49,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:37:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2021-10-13 07:37:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:37:49,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:49,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:37:49,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:49,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:49,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:37:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:49,291 INFO L82 PathProgramCache]: Analyzing trace with hash 889693415, now seen corresponding path program 1 times [2021-10-13 07:37:49,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:49,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949454113] [2021-10-13 07:37:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:49,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:49,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:49,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:37:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:49,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:37:49,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:49,424 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 07:37:49,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:49,484 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 07:37:49,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:49,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949454113] [2021-10-13 07:37:49,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949454113] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:49,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:49,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:37:49,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968162946] [2021-10-13 07:37:49,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:37:49,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:49,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:37:49,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:37:49,494 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 07:37:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:49,650 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2021-10-13 07:37:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:37:49,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:37:49,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:49,656 INFO L225 Difference]: With dead ends: 24 [2021-10-13 07:37:49,657 INFO L226 Difference]: Without dead ends: 20 [2021-10-13 07:37:49,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:37:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-13 07:37:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-10-13 07:37:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 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) [2021-10-13 07:37:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2021-10-13 07:37:49,675 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 28 transitions. Word has length 6 [2021-10-13 07:37:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:49,680 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-10-13 07:37:49,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 07:37:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2021-10-13 07:37:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:37:49,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:49,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:49,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:49,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:49,890 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:37:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:49,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1797740634, now seen corresponding path program 1 times [2021-10-13 07:37:49,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:49,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582584423] [2021-10-13 07:37:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:49,893 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:49,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:49,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:37:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:50,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:37:50,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:50,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:50,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:50,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582584423] [2021-10-13 07:37:50,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582584423] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:37:50,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:37:50,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:37:50,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529090611] [2021-10-13 07:37:50,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:37:50,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:50,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:37:50,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:50,209 INFO L87 Difference]: Start difference. First operand 18 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-13 07:37:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:50,335 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2021-10-13 07:37:50,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:37:50,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-10-13 07:37:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:50,338 INFO L225 Difference]: With dead ends: 48 [2021-10-13 07:37:50,338 INFO L226 Difference]: Without dead ends: 33 [2021-10-13 07:37:50,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:37:50,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-13 07:37:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-10-13 07:37:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 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) [2021-10-13 07:37:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-13 07:37:50,352 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 17 [2021-10-13 07:37:50,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:50,352 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-13 07:37:50,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-13 07:37:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-13 07:37:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:37:50,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:37:50,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:37:50,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:50,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:37:50,573 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:37:50,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:37:50,574 INFO L82 PathProgramCache]: Analyzing trace with hash -170777494, now seen corresponding path program 1 times [2021-10-13 07:37:50,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:37:50,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627214579] [2021-10-13 07:37:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:50,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:37:50,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:37:50,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:37:50,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:37:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:50,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:37:50,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:51,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:51,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:51,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627214579] [2021-10-13 07:37:51,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627214579] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:51,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1470595988] [2021-10-13 07:37:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:51,721 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:37:51,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:37:51,725 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:37:51,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:37:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:51,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 07:37:51,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:52,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:52,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1470595988] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:52,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351391928] [2021-10-13 07:37:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:52,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:37:52,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:37:52,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:37:52,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:37:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:52,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 07:37:52,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:52,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:37:53,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351391928] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:53,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:37:53,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 9, 6, 9, 5] total 17 [2021-10-13 07:37:53,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555595373] [2021-10-13 07:37:53,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 07:37:53,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:37:53,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 07:37:53,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-13 07:37:53,225 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 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) [2021-10-13 07:37:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:37:53,630 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2021-10-13 07:37:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:37:53,631 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 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 17 [2021-10-13 07:37:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:37:53,631 INFO L225 Difference]: With dead ends: 44 [2021-10-13 07:37:53,632 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:37:53,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 54 SyntacticMatches, 27 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 988.6ms TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-13 07:37:53,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:37:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:37:53,633 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) [2021-10-13 07:37:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:37:53,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-13 07:37:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:37:53,634 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:37:53,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 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) [2021-10-13 07:37:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:37:53,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:37:53,640 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:37:53,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-13 07:37:53,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:54,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:37:54,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:37:54,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:37:54,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:37:54,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:37:54,328 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,336 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-13 07:37:54,336 INFO L860 garLoopResultBuilder]: At program point L7-2(lines 1 50) the Hoare annotation is: true [2021-10-13 07:37:54,336 INFO L857 garLoopResultBuilder]: For program point L36-1(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,337 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:37:54,337 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:37:54,337 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:37:54,337 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-10-13 07:37:54,337 INFO L857 garLoopResultBuilder]: For program point L24-1(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,338 INFO L853 garLoopResultBuilder]: At program point L45-1(lines 17 47) the Hoare annotation is: (let ((.cse0 (bvurem ULTIMATE.start_main_~y~0 (_ bv2 32)))) (or (and (not (= .cse0 (_ bv0 32))) (= (bvadd ULTIMATE.start_main_~x~0 (_ bv5 32)) (_ bv0 32))) (= ULTIMATE.start_main_~x~0 (_ bv0 32)) (and (= .cse0 (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32))) (forall ((ULTIMATE.start_main_~y~0 (_ BitVec 32))) (let ((.cse1 (bvurem ULTIMATE.start_main_~y~0 (_ bv2 32)))) (or (= .cse1 (_ bv0 32)) (= .cse1 (bvurem (bvadd ULTIMATE.start_main_~x~0 (_ bv5 32)) (_ bv2 32))))))))) [2021-10-13 07:37:54,338 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-13 07:37:54,338 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:37:54,338 INFO L857 garLoopResultBuilder]: For program point L33-1(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,339 INFO L857 garLoopResultBuilder]: For program point L21-1(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,339 INFO L857 garLoopResultBuilder]: For program point L17-2(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,339 INFO L857 garLoopResultBuilder]: For program point L42-1(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,339 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,340 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2021-10-13 07:37:54,340 INFO L857 garLoopResultBuilder]: For program point L18-2(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,340 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 17 47) no Hoare annotation was computed. [2021-10-13 07:37:54,350 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:37:54,364 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 07:37:54,365 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 07:37:54,372 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 07:37:54,373 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 07:37:54,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:37:54 BoogieIcfgContainer [2021-10-13 07:37:54,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:37:54,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:37:54,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:37:54,377 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:37:54,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:48" (3/4) ... [2021-10-13 07:37:54,381 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:37:54,397 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 07:37:54,398 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:37:54,398 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:37:54,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:37:54,482 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:37:54,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:37:54,490 INFO L168 Benchmark]: Toolchain (without parser) took 6918.31 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 37.5 MB in the beginning and 44.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:54,492 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:37:54,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.89 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 27.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:54,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.20 ms. Allocated memory is still 58.7 MB. Free memory was 27.0 MB in the beginning and 42.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:54,493 INFO L168 Benchmark]: Boogie Preprocessor took 62.70 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 40.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:37:54,494 INFO L168 Benchmark]: RCFGBuilder took 438.45 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 30.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:54,494 INFO L168 Benchmark]: TraceAbstraction took 5922.68 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 29.7 MB in the beginning and 46.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:54,495 INFO L168 Benchmark]: Witness Printer took 111.61 ms. Allocated memory is still 79.7 MB. Free memory was 46.9 MB in the beginning and 44.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:37:54,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.89 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 27.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.20 ms. Allocated memory is still 58.7 MB. Free memory was 27.0 MB in the beginning and 42.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.70 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 40.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 438.45 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 30.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5922.68 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 29.7 MB in the beginning and 46.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 111.61 ms. Allocated memory is still 79.7 MB. Free memory was 46.9 MB in the beginning and 44.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] * 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: 8]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5818.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 33.0ms, AutomataDifference: 776.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 84.6ms, InitialAbstractionConstructionTime: 12.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 24 SDslu, 18 SDs, 0 SdLazy, 246 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 423.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 103 SyntacticMatches, 27 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1009.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 54.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 41 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 57.5ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 20.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 104.9ms SsaConstructionTime, 179.2ms SatisfiabilityAnalysisTime, 2685.3ms InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 148 ConstructedInterpolants, 12 QuantifiedInterpolants, 954 SizeOfPredicates, 14 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 2/8 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: 1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant [2021-10-13 07:37:54,509 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 07:37:54,509 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 07:37:54,510 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] [2021-10-13 07:37:54,510 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~y~0,QUANTIFIED] Derived loop invariant: ((!(~bvurem32(y, 2bv32) == 0bv32) && ~bvadd64(x, 5bv32) == 0bv32) || x == 0bv32) || (~bvurem32(y, 2bv32) == ~bvurem32(x, 2bv32) && (forall ULTIMATE.start_main_~y~0 : bv32 :: ~bvurem32(ULTIMATE.start_main_~y~0, 2bv32) == 0bv32 || ~bvurem32(ULTIMATE.start_main_~y~0, 2bv32) == ~bvurem32(~bvadd64(x, 5bv32), 2bv32))) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:37:54,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ab651d-6b35-4090-b79b-90572b0a8c31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...