./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.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_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/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_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/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_d0374188-014a-40b4-a64c-f1579746f293/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 231a10bb05ed6dc00d2658e900a2b37af0aae558 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/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_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/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_d0374188-014a-40b4-a64c-f1579746f293/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 231a10bb05ed6dc00d2658e900a2b37af0aae558 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:05:54,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:05:54,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:05:54,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:05:54,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:05:54,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:05:54,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:05:54,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:05:54,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:05:54,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:05:54,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:05:54,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:05:54,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:05:54,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:05:54,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:05:54,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:05:54,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:05:54,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:05:54,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:05:54,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:05:54,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:05:54,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:05:54,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:05:54,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:05:54,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:05:54,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:05:54,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:05:54,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:05:54,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:05:54,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:05:54,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:05:54,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:05:54,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:05:54,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:05:54,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:05:54,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:05:54,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:05:54,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:05:54,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:05:54,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:05:54,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:05:54,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:05:54,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:05:54,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:05:54,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:05:54,234 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:05:54,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:05:54,234 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:05:54,235 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:05:54,241 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:05:54,242 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:05:54,242 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:05:54,243 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:05:54,243 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:05:54,244 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:05:54,244 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:05:54,244 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:05:54,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:05:54,245 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:05:54,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:05:54,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:05:54,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:05:54,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:05:54,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:05:54,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:05:54,247 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:05:54,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:05:54,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:05:54,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:05:54,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:05:54,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:05:54,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:05:54,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:05:54,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:05:54,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:05:54,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:05:54,251 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:05:54,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:05:54,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:05:54,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:05:54,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:05:54,253 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_d0374188-014a-40b4-a64c-f1579746f293/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 231a10bb05ed6dc00d2658e900a2b37af0aae558 [2021-10-13 08:05:54,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:05:54,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:05:54,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:05:54,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:05:54,556 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:05:54,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2021-10-13 08:05:54,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data/636d5e303/e858b8e9d7294fd1930926321de47ccb/FLAG1364f5329 [2021-10-13 08:05:55,144 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:05:55,144 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2021-10-13 08:05:55,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data/636d5e303/e858b8e9d7294fd1930926321de47ccb/FLAG1364f5329 [2021-10-13 08:05:55,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data/636d5e303/e858b8e9d7294fd1930926321de47ccb [2021-10-13 08:05:55,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:05:55,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:05:55,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:05:55,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:05:55,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:05:55,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc62d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55, skipping insertion in model container [2021-10-13 08:05:55,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:05:55,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:05:55,778 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_d0374188-014a-40b4-a64c-f1579746f293/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2021-10-13 08:05:55,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:05:55,808 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:05:55,821 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_d0374188-014a-40b4-a64c-f1579746f293/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2021-10-13 08:05:55,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:05:55,844 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:05:55,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55 WrapperNode [2021-10-13 08:05:55,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:05:55,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:05:55,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:05:55,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:05:55,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:05:55,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:05:55,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:05:55,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:05:55,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:05:55,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:05:55,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:05:55,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:05:55,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (1/1) ... [2021-10-13 08:05:55,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:05:55,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:05:55,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:05:55,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:05:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:05:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:05:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:05:56,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:05:56,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:05:56,614 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-13 08:05:56,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:05:56 BoogieIcfgContainer [2021-10-13 08:05:56,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:05:56,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:05:56,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:05:56,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:05:56,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:05:55" (1/3) ... [2021-10-13 08:05:56,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243172ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:05:56, skipping insertion in model container [2021-10-13 08:05:56,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:55" (2/3) ... [2021-10-13 08:05:56,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243172ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:05:56, skipping insertion in model container [2021-10-13 08:05:56,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:05:56" (3/3) ... [2021-10-13 08:05:56,639 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound2.c [2021-10-13 08:05:56,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:05:56,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 08:05:56,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:05:56,741 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 08:05:56,741 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 08:05:56,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 33 states have internal predecessors, (44), 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 08:05:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 08:05:56,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:56,789 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 08:05:56,790 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:05:56,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:56,797 INFO L82 PathProgramCache]: Analyzing trace with hash 5453836, now seen corresponding path program 1 times [2021-10-13 08:05:56,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:05:56,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148924734] [2021-10-13 08:05:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:56,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:05:56,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:05:56,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216699879] [2021-10-13 08:05:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:56,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:56,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:05:56,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:05:56,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:05:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:57,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:05:57,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:57,261 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 08:05:57,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:57,300 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 08:05:57,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:05:57,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148924734] [2021-10-13 08:05:57,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:05:57,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216699879] [2021-10-13 08:05:57,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216699879] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:57,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:05:57,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:05:57,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060004601] [2021-10-13 08:05:57,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:05:57,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:05:57,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:05:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:05:57,341 INFO L87 Difference]: Start difference. First operand has 34 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 33 states have internal predecessors, (44), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 08:05:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:57,483 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2021-10-13 08:05:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:05:57,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 4 [2021-10-13 08:05:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:57,493 INFO L225 Difference]: With dead ends: 75 [2021-10-13 08:05:57,493 INFO L226 Difference]: Without dead ends: 38 [2021-10-13 08:05:57,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:05:57,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-13 08:05:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2021-10-13 08:05:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 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 08:05:57,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-10-13 08:05:57,536 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 4 [2021-10-13 08:05:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:57,537 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-10-13 08:05:57,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 08:05:57,537 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-10-13 08:05:57,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:05:57,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:57,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:05:57,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:57,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 08:05:57,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:05:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:57,756 INFO L82 PathProgramCache]: Analyzing trace with hash 946325295, now seen corresponding path program 1 times [2021-10-13 08:05:57,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:05:57,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413352236] [2021-10-13 08:05:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:57,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:05:57,784 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:05:57,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653549136] [2021-10-13 08:05:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:57,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:57,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:05:57,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:05:57,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 08:05:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:57,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:05:57,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:57,974 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 08:05:57,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:58,024 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 08:05:58,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:05:58,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413352236] [2021-10-13 08:05:58,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:05:58,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653549136] [2021-10-13 08:05:58,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653549136] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:58,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:05:58,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:05:58,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165345680] [2021-10-13 08:05:58,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:05:58,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:05:58,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:05:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:05:58,040 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 08:05:58,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:58,149 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-10-13 08:05:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:05:58,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 08:05:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:58,151 INFO L225 Difference]: With dead ends: 52 [2021-10-13 08:05:58,151 INFO L226 Difference]: Without dead ends: 44 [2021-10-13 08:05:58,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:05:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-13 08:05:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-10-13 08:05:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 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 08:05:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-13 08:05:58,161 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2021-10-13 08:05:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:58,162 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-13 08:05:58,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 08:05:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-13 08:05:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 08:05:58,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:58,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:05:58,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:58,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:58,387 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:05:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:58,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1120146711, now seen corresponding path program 1 times [2021-10-13 08:05:58,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:05:58,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826498847] [2021-10-13 08:05:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:58,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:05:58,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:05:58,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24392635] [2021-10-13 08:05:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:58,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:58,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:05:58,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:05:58,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 08:05:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:58,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:05:58,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:58,601 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 08:05:58,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:58,695 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 08:05:58,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:05:58,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826498847] [2021-10-13 08:05:58,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:05:58,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24392635] [2021-10-13 08:05:58,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24392635] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:05:58,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:05:58,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-13 08:05:58,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411748983] [2021-10-13 08:05:58,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:05:58,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:05:58,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:05:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:05:58,702 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 08:05:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:05:58,805 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-10-13 08:05:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:05:58,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 13 [2021-10-13 08:05:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:05:58,810 INFO L225 Difference]: With dead ends: 40 [2021-10-13 08:05:58,810 INFO L226 Difference]: Without dead ends: 38 [2021-10-13 08:05:58,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:05:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-13 08:05:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-13 08:05:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 37 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 08:05:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-10-13 08:05:58,833 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 13 [2021-10-13 08:05:58,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:05:58,833 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-10-13 08:05:58,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 08:05:58,836 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-10-13 08:05:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 08:05:58,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:05:58,838 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:05:58,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:05:59,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:59,051 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:05:59,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:05:59,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1053678152, now seen corresponding path program 1 times [2021-10-13 08:05:59,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:05:59,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562747754] [2021-10-13 08:05:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:59,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:05:59,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 08:05:59,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036999861] [2021-10-13 08:05:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:05:59,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:05:59,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:05:59,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:05:59,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 08:05:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:05:59,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 08:05:59,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:05:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:59,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:05:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:05:59,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:05:59,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562747754] [2021-10-13 08:05:59,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 08:05:59,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036999861] [2021-10-13 08:05:59,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036999861] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:05:59,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1696208148] [2021-10-13 08:05:59,760 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-13 08:05:59,760 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:05:59,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:05:59,773 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:05:59,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:05:59,828 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.1 percent of original size [2021-10-13 08:05:59,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:05:59,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:59,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 08:05:59,835 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:05:59,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:59,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 08:05:59,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-13 08:05:59,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:05:59,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:05:59,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:05:59,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:59,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 08:05:59,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:59,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 08:05:59,884 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:05:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:05:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:05:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:05:59,955 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-13 08:05:59,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-13 08:05:59,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:59,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:05:59,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:05:59,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:05:59,964 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 08:05:59,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:06:00,051 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:06:00,059 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-10-13 08:06:00,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-13 08:06:00,066 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:06:00,067 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:308, output treesize:134 [2021-10-13 08:06:00,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 08:06:00,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:06:00,287 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_13| 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 08:06:00,291 INFO L168 Benchmark]: Toolchain (without parser) took 4779.69 ms. Allocated memory was 125.8 MB in the beginning and 176.2 MB in the end (delta: 50.3 MB). Free memory was 97.1 MB in the beginning and 108.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:06:00,291 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 125.8 MB. Free memory was 77.4 MB in the beginning and 77.4 MB in the end (delta: 58.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:06:00,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.67 ms. Allocated memory is still 125.8 MB. Free memory was 96.8 MB in the beginning and 98.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:06:00,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.76 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 96.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:06:00,293 INFO L168 Benchmark]: Boogie Preprocessor took 27.24 ms. Allocated memory is still 125.8 MB. Free memory was 96.8 MB in the beginning and 95.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:06:00,294 INFO L168 Benchmark]: RCFGBuilder took 703.08 ms. Allocated memory is still 125.8 MB. Free memory was 95.8 MB in the beginning and 80.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:06:00,295 INFO L168 Benchmark]: TraceAbstraction took 3670.59 ms. Allocated memory was 125.8 MB in the beginning and 176.2 MB in the end (delta: 50.3 MB). Free memory was 80.1 MB in the beginning and 108.5 MB in the end (delta: -28.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:06:00,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 125.8 MB. Free memory was 77.4 MB in the beginning and 77.4 MB in the end (delta: 58.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.67 ms. Allocated memory is still 125.8 MB. Free memory was 96.8 MB in the beginning and 98.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.76 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 96.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.24 ms. Allocated memory is still 125.8 MB. Free memory was 96.8 MB in the beginning and 95.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 703.08 ms. Allocated memory is still 125.8 MB. Free memory was 95.8 MB in the beginning and 80.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3670.59 ms. Allocated memory was 125.8 MB in the beginning and 176.2 MB in the end (delta: 50.3 MB). Free memory was 80.1 MB in the beginning and 108.5 MB in the end (delta: -28.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_13| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_13|: 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 08:06:00,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/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 08:06:03,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:06:03,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:06:03,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:06:03,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:06:03,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:06:03,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:06:03,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:06:03,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:06:03,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:06:03,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:06:03,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:06:03,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:06:03,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:06:03,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:06:03,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:06:03,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:06:03,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:06:03,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:06:03,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:06:03,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:06:03,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:06:03,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:06:03,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:06:03,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:06:03,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:06:03,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:06:03,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:06:03,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:06:03,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:06:03,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:06:03,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:06:03,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:06:03,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:06:03,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:06:03,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:06:03,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:06:03,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:06:03,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:06:03,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:06:03,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:06:03,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:06:03,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:06:03,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:06:03,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:06:03,188 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:06:03,188 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:06:03,188 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:06:03,189 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:06:03,189 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:06:03,189 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:06:03,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:06:03,192 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:06:03,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:06:03,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:06:03,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:06:03,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:06:03,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:06:03,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:06:03,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:06:03,194 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:06:03,195 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:06:03,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:06:03,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:06:03,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:06:03,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:06:03,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:06:03,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:06:03,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:06:03,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:06:03,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:06:03,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:06:03,198 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:06:03,198 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:06:03,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:06:03,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:06:03,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:06:03,199 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_d0374188-014a-40b4-a64c-f1579746f293/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 231a10bb05ed6dc00d2658e900a2b37af0aae558 [2021-10-13 08:06:03,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:06:03,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:06:03,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:06:03,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:06:03,660 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:06:03,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2021-10-13 08:06:03,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data/251e1c02a/49ec222ed8d24795b58314f170447a9e/FLAG375f4e829 [2021-10-13 08:06:04,249 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:06:04,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2021-10-13 08:06:04,256 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data/251e1c02a/49ec222ed8d24795b58314f170447a9e/FLAG375f4e829 [2021-10-13 08:06:04,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/data/251e1c02a/49ec222ed8d24795b58314f170447a9e [2021-10-13 08:06:04,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:06:04,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:06:04,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:06:04,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:06:04,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:06:04,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:04,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7203f24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04, skipping insertion in model container [2021-10-13 08:06:04,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:04,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:06:04,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:06:04,785 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_d0374188-014a-40b4-a64c-f1579746f293/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2021-10-13 08:06:04,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:06:04,815 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:06:04,828 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_d0374188-014a-40b4-a64c-f1579746f293/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2021-10-13 08:06:04,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:06:04,852 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:06:04,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04 WrapperNode [2021-10-13 08:06:04,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:06:04,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:06:04,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:06:04,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:06:04,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:04,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:04,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:06:04,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:06:04,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:06:04,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:06:04,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:04,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:04,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:04,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:04,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:05,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:05,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:05,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:06:05,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:06:05,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:06:05,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:06:05,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (1/1) ... [2021-10-13 08:06:05,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:06:05,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:06:05,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:06:05,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:06:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:06:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:06:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:06:05,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:06:06,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:06:06,036 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-13 08:06:06,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:06 BoogieIcfgContainer [2021-10-13 08:06:06,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:06:06,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:06:06,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:06:06,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:06:06,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:06:04" (1/3) ... [2021-10-13 08:06:06,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac9a3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:06, skipping insertion in model container [2021-10-13 08:06:06,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:06:04" (2/3) ... [2021-10-13 08:06:06,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac9a3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:06, skipping insertion in model container [2021-10-13 08:06:06,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:06" (3/3) ... [2021-10-13 08:06:06,052 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound2.c [2021-10-13 08:06:06,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:06:06,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 08:06:06,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:06:06,136 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 08:06:06,136 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 08:06:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 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 08:06:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:06:06,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:06:06,187 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:06:06,189 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:06:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:06:06,203 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-13 08:06:06,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:06:06,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557347437] [2021-10-13 08:06:06,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:06,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:06:06,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:06:06,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:06:06,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:06:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:06,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:06:06,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:06,418 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 08:06:06,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:06,459 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 08:06:06,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:06,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557347437] [2021-10-13 08:06:06,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557347437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:06:06,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:06:06,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:06:06,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485962304] [2021-10-13 08:06:06,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:06:06,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:06:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:06:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:06:06,485 INFO L87 Difference]: Start difference. First operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 08:06:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:06:06,517 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-10-13 08:06:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:06:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-10-13 08:06:06,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:06:06,542 INFO L225 Difference]: With dead ends: 83 [2021-10-13 08:06:06,543 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 08:06:06,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 08:06:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 08:06:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-13 08:06:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.25) internal successors, (40), 38 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 08:06:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-10-13 08:06:06,610 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2021-10-13 08:06:06,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:06:06,611 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-13 08:06:06,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 08:06:06,611 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-10-13 08:06:06,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:06:06,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:06:06,612 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:06:06,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:06,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:06:06,829 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:06:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:06:06,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-13 08:06:06,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:06:06,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735589266] [2021-10-13 08:06:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:06,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:06:06,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:06:06,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:06:06,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:06:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:06,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:06:06,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:07,398 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 08:06:07,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:08,034 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 08:06:08,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:08,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735589266] [2021-10-13 08:06:08,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735589266] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:06:08,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:06:08,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-13 08:06:08,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517169993] [2021-10-13 08:06:08,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:06:08,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:06:08,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:06:08,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:06:08,039 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 08:06:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:06:10,878 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2021-10-13 08:06:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 08:06:10,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 11 [2021-10-13 08:06:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:06:10,891 INFO L225 Difference]: With dead ends: 51 [2021-10-13 08:06:10,891 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 08:06:10,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1809.6ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-13 08:06:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 08:06:10,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2021-10-13 08:06:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 32 states have internal predecessors, (34), 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 08:06:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-10-13 08:06:10,909 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 11 [2021-10-13 08:06:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:06:10,910 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-10-13 08:06:10,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 08:06:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-10-13 08:06:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 08:06:10,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:06:10,911 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:06:10,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:11,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:06:11,113 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:06:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:06:11,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-10-13 08:06:11,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:06:11,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931872131] [2021-10-13 08:06:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:11,116 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:06:11,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:06:11,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:06:11,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:06:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:11,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 08:06:11,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:11,891 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 08:06:11,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:13,623 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 08:06:13,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:13,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931872131] [2021-10-13 08:06:13,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931872131] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:06:13,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:06:13,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2021-10-13 08:06:13,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352865650] [2021-10-13 08:06:13,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:06:13,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:06:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:06:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:06:13,626 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 08:06:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:06:15,180 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2021-10-13 08:06:15,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 08:06:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 13 [2021-10-13 08:06:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:06:15,188 INFO L225 Difference]: With dead ends: 60 [2021-10-13 08:06:15,188 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 08:06:15,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1670.9ms TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-13 08:06:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 08:06:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2021-10-13 08:06:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 46 states have internal predecessors, (49), 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 08:06:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-10-13 08:06:15,199 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 13 [2021-10-13 08:06:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:06:15,200 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-10-13 08:06:15,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 08:06:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-10-13 08:06:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 08:06:15,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:06:15,201 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:06:15,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:06:15,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:06:15,416 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:06:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:06:15,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1755069467, now seen corresponding path program 1 times [2021-10-13 08:06:15,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:06:15,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058200062] [2021-10-13 08:06:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:15,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:06:15,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:06:15,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:06:15,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:06:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:15,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 08:06:15,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:17,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:35,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:06:35,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058200062] [2021-10-13 08:06:35,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058200062] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:35,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1913733199] [2021-10-13 08:06:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:35,572 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:06:35,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:06:35,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:06:35,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 08:06:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:36,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 08:06:36,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:37,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:06:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:46,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1913733199] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:06:46,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185705447] [2021-10-13 08:06:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:06:46,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:06:46,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:06:46,016 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:06:46,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 08:06:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:06:46,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 08:06:46,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:06:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:06:48,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:08,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185705447] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:07:08,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:07:08,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 13, 7, 14, 9] total 21 [2021-10-13 08:07:08,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458643038] [2021-10-13 08:07:08,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 08:07:08,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:08,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 08:07:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-10-13 08:07:08,663 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 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 08:07:36,263 WARN L207 SmtUtils]: Spent 6.76 s on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2021-10-13 08:07:47,157 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2021-10-13 08:07:54,474 WARN L207 SmtUtils]: Spent 5.53 s on a formula simplification. DAG size of input: 46 DAG size of output: 30 [2021-10-13 08:08:35,018 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2021-10-13 08:08:43,152 WARN L207 SmtUtils]: Spent 6.49 s on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2021-10-13 08:08:50,983 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2021-10-13 08:09:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:20,171 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-10-13 08:09:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 08:09:20,190 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 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 26 [2021-10-13 08:09:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:20,191 INFO L225 Difference]: With dead ends: 128 [2021-10-13 08:09:20,192 INFO L226 Difference]: Without dead ends: 91 [2021-10-13 08:09:20,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 107446.8ms TimeCoverageRelationStatistics Valid=606, Invalid=1374, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 08:09:20,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-13 08:09:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-13 08:09:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 75 states have internal predecessors, (82), 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 08:09:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2021-10-13 08:09:20,218 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 26 [2021-10-13 08:09:20,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:20,218 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2021-10-13 08:09:20,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 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 08:09:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2021-10-13 08:09:20,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 08:09:20,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:20,222 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:20,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:20,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:20,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:09:20,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:20,840 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 08:09:20,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:20,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1267754724, now seen corresponding path program 1 times [2021-10-13 08:09:20,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:09:20,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214651681] [2021-10-13 08:09:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:20,842 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:09:20,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:09:20,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:09:20,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 08:09:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:21,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 08:09:21,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:23,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:15,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:15,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214651681] [2021-10-13 08:10:15,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214651681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:15,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [779580115] [2021-10-13 08:10:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:15,413 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:15,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:10:15,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:10:15,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 08:10:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:16,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 08:10:16,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:26,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:37,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [779580115] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:37,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952549844] [2021-10-13 08:10:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:37,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:10:37,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:10:37,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:10:37,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 08:10:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:37,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 08:10:37,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 08:10:42,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 08:10:44,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952549844] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:44,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:10:44,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 8, 7, 6, 6] total 42 [2021-10-13 08:10:44,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628223871] [2021-10-13 08:10:44,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-13 08:10:44,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:10:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-13 08:10:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1450, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 08:10:44,699 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 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 08:11:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:03,511 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2021-10-13 08:11:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 08:11:03,523 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 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 42 [2021-10-13 08:11:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:03,524 INFO L225 Difference]: With dead ends: 91 [2021-10-13 08:11:03,524 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:11:03,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 74413.5ms TimeCoverageRelationStatistics Valid=639, Invalid=2223, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 08:11:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:11:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:11:03,527 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 08:11:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:11:03,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-10-13 08:11:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:03,527 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:11:03,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.5) internal successors, (189), 42 states have internal predecessors, (189), 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 08:11:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:11:03,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:11:03,531 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:11:03,531 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:11:03,532 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:11:03,532 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:11:03,532 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:11:03,532 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:11:03,532 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:11:03,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-13 08:11:03,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:03,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-13 08:11:04,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:11:04,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:11:04,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:04,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:04,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:04,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:04,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:04,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:04,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:04,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:04,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:04,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:24,236 WARN L207 SmtUtils]: Spent 8.65 s on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-10-13 08:11:34,445 WARN L207 SmtUtils]: Spent 10.21 s on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-10-13 08:11:42,684 WARN L207 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-10-13 08:11:42,688 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:11:42,689 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-13 08:11:42,689 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-10-13 08:11:42,689 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2021-10-13 08:11:42,689 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:11:42,690 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:11:42,690 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:11:42,690 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 08:11:42,690 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-10-13 08:11:42,690 INFO L857 garLoopResultBuilder]: For program point L12-4(line 12) no Hoare annotation was computed. [2021-10-13 08:11:42,691 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:11:42,691 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse7 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse9 ((_ sign_extend 32) ULTIMATE.start_main_~y~0)) (.cse3 ((_ sign_extend 32) (_ bv0 32)))) (let ((.cse0 (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse10 ((_ sign_extend 32) (_ bv2 32))) (.cse4 (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32))) (.cse8 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse11 (bvsge ULTIMATE.start_main_~y~0 (_ bv0 32))) (.cse2 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse5 (bvsle ULTIMATE.start_main_~y~0 (_ bv2 32))) (.cse6 (or (and .cse7 (= (bvmul .cse9 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0)) (and (= .cse3 ULTIMATE.start_main_~b~0) (= .cse3 ULTIMATE.start_main_~a~0))))) (or (and .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~r~0) (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (= .cse3 ULTIMATE.start_main_~q~0) .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse7 .cse4 .cse8 (not (bvsge (bvadd .cse2 (bvmul (_ bv18446744073709551615 64) .cse9 (bvadd ULTIMATE.start_main_~q~0 (bvmul ULTIMATE.start_main_~a~0 .cse10)))) .cse9)) .cse11 (not (bvsge (bvadd .cse2 (bvmul (_ bv18446744073709551615 64) .cse9 (bvadd ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~a~0))) .cse9)) .cse5 (= .cse2 (bvadd (bvmul .cse9 ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~r~0)) (exists ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (let ((.cse14 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse13 ((_ sign_extend 32) (_ bv2 32))) (.cse12 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (and (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32)) (= (bvadd ULTIMATE.start_main_~r~0 (bvmul .cse12 ((_ sign_extend 32) (_ bv0 32))) (bvmul .cse12 ((_ sign_extend 32) (_ bv1 32)) .cse13)) .cse14) (bvsge .cse14 (bvmul .cse13 .cse12))))) .cse6) (let ((.cse16 (bvneg .cse9))) (let ((.cse15 (bvadd ULTIMATE.start_main_~r~0 (bvmul .cse16 (_ bv18446744073709551615 64))))) (and .cse0 .cse1 .cse7 (= ULTIMATE.start_main_~q~0 (bvadd .cse3 ((_ sign_extend 32) (_ bv1 32)))) (not (bvsge .cse15 (bvmul .cse10 .cse9))) .cse4 .cse8 (bvsge .cse15 .cse9) .cse11 (= (bvadd .cse2 .cse16) ULTIMATE.start_main_~r~0) .cse5 .cse6)))))) [2021-10-13 08:11:42,692 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2021-10-13 08:11:42,692 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:11:42,692 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse7 ((_ sign_extend 32) ULTIMATE.start_main_~y~0)) (.cse8 ((_ sign_extend 32) ULTIMATE.start_main_~x~0))) (let ((.cse0 (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (= .cse8 ULTIMATE.start_main_~r~0)) (.cse3 (= (bvmul .cse7 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0)) (.cse4 (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32))) (.cse5 (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0)) (.cse6 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) .cse6 (bvsge ULTIMATE.start_main_~r~0 .cse7)) (let ((.cse9 ((_ sign_extend 32) (_ bv2 32)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (bvsge .cse8 (bvmul .cse9 .cse7)) .cse5 .cse6 (= (bvmul .cse7 .cse9) ULTIMATE.start_main_~b~0)))))) [2021-10-13 08:11:42,692 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-10-13 08:11:42,693 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:11:42,693 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:11:42,693 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse7 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (let ((.cse3 (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32))) (.cse4 (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32))) (.cse0 (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse12 ((_ sign_extend 32) (_ bv0 32))) (.cse2 (= (bvmul .cse7 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0)) (.cse8 ((_ sign_extend 32) (_ bv2 32))) (.cse5 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse6 ((_ sign_extend 32) ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (bvsge (bvadd .cse6 (bvmul (_ bv18446744073709551615 64) .cse7 (bvadd ULTIMATE.start_main_~q~0 (bvmul ULTIMATE.start_main_~a~0 .cse8)))) .cse7)) (not (bvsge (bvadd .cse6 (bvmul (_ bv18446744073709551615 64) .cse7 (bvadd ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~a~0))) .cse7)) (= .cse6 (bvadd (bvmul .cse7 ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~r~0)) (exists ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (let ((.cse11 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse10 ((_ sign_extend 32) (_ bv2 32))) (.cse9 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (and (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32)) (= (bvadd ULTIMATE.start_main_~r~0 (bvmul .cse9 ((_ sign_extend 32) (_ bv0 32))) (bvmul .cse9 ((_ sign_extend 32) (_ bv1 32)) .cse10)) .cse11) (bvsge .cse11 (bvmul .cse10 .cse9)))))) (and .cse0 .cse1 (= .cse6 ULTIMATE.start_main_~r~0) .cse2 .cse3 (= .cse12 ULTIMATE.start_main_~q~0) .cse4 .cse5 (bvsle ULTIMATE.start_main_~y~0 (_ bv2 32))) (let ((.cse14 (bvneg .cse7))) (let ((.cse13 (bvadd ULTIMATE.start_main_~r~0 (bvmul .cse14 (_ bv18446744073709551615 64))))) (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 (bvadd .cse12 ((_ sign_extend 32) (_ bv1 32)))) .cse2 (not (bvsge .cse13 (bvmul .cse8 .cse7))) .cse5 (bvsge .cse13 .cse7) (= (bvadd .cse6 .cse14) ULTIMATE.start_main_~r~0))))))) [2021-10-13 08:11:42,693 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:11:42,694 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse9 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (let ((.cse0 (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32))) (.cse4 ((_ sign_extend 32) (_ bv0 32))) (.cse6 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse3 (= (bvmul .cse9 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0)) (.cse5 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse8 ((_ sign_extend 32) (_ bv2 32))) (.cse2 ((_ sign_extend 32) ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~r~0) .cse3 (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (= .cse4 ULTIMATE.start_main_~q~0) (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32)) .cse5 (bvsle ULTIMATE.start_main_~y~0 (_ bv2 32))) (let ((.cse10 (bvneg .cse9))) (let ((.cse7 (bvadd ULTIMATE.start_main_~r~0 (bvmul .cse10 (_ bv18446744073709551615 64))))) (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 (bvadd .cse4 .cse6)) .cse3 (not (bvsge .cse7 (bvmul .cse8 .cse9))) .cse5 (bvsge .cse7 .cse9) (= (bvadd .cse2 .cse10) ULTIMATE.start_main_~r~0)))) (and (= ULTIMATE.start_main_~q~0 (bvadd .cse4 (bvmul .cse6 .cse8))) .cse1 .cse3 .cse5 (not (bvsge (bvadd .cse2 (bvmul (_ bv18446744073709551615 64) .cse9 (bvadd ULTIMATE.start_main_~q~0 (bvmul ULTIMATE.start_main_~a~0 .cse8)))) .cse9)) (bvsge ULTIMATE.start_main_~y~0 (_ bv0 32)) (not (bvsge (bvadd .cse2 (bvmul (_ bv18446744073709551615 64) .cse9 (bvadd ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~a~0))) .cse9)) (= .cse2 (bvadd (bvmul .cse9 ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~r~0)) (exists ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (let ((.cse13 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse12 ((_ sign_extend 32) (_ bv2 32))) (.cse11 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (and (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32)) (= (bvadd ULTIMATE.start_main_~r~0 (bvmul .cse11 ((_ sign_extend 32) (_ bv0 32))) (bvmul .cse11 ((_ sign_extend 32) (_ bv1 32)) .cse12)) .cse13) (bvsge .cse13 (bvmul .cse12 .cse11))))))))) [2021-10-13 08:11:42,694 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:11:42,694 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse7 ((_ sign_extend 32) ULTIMATE.start_main_~y~0)) (.cse8 ((_ sign_extend 32) ULTIMATE.start_main_~x~0))) (let ((.cse0 (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (= .cse8 ULTIMATE.start_main_~r~0)) (.cse3 (= (bvmul .cse7 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0)) (.cse4 (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32))) (.cse5 (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0)) (.cse6 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) .cse6 (bvsge ULTIMATE.start_main_~r~0 .cse7)) (let ((.cse9 ((_ sign_extend 32) (_ bv2 32)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (bvsge .cse8 (bvmul .cse9 .cse7)) .cse5 .cse6 (= (bvmul .cse7 .cse9) ULTIMATE.start_main_~b~0)))))) [2021-10-13 08:11:42,695 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:11:42,695 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse7 ((_ sign_extend 32) ULTIMATE.start_main_~y~0)) (.cse8 ((_ sign_extend 32) ULTIMATE.start_main_~x~0))) (let ((.cse0 (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (= .cse8 ULTIMATE.start_main_~r~0)) (.cse3 (= (bvmul .cse7 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0)) (.cse4 (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32))) (.cse5 (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0)) (.cse6 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) .cse6 (bvsge ULTIMATE.start_main_~r~0 .cse7)) (let ((.cse9 ((_ sign_extend 32) (_ bv2 32)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (bvsge .cse8 (bvmul .cse9 .cse7)) .cse5 .cse6 (= (bvmul .cse7 .cse9) ULTIMATE.start_main_~b~0)))))) [2021-10-13 08:11:42,695 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:11:42,695 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 52 53) the Hoare annotation is: (let ((.cse7 ((_ sign_extend 32) ULTIMATE.start_main_~y~0)) (.cse8 ((_ sign_extend 32) ULTIMATE.start_main_~x~0))) (let ((.cse0 (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (= .cse8 ULTIMATE.start_main_~r~0)) (.cse3 (= (bvmul .cse7 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0)) (.cse4 (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32))) (.cse5 (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0)) (.cse6 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) .cse6 (bvsge ULTIMATE.start_main_~r~0 .cse7)) (let ((.cse9 ((_ sign_extend 32) (_ bv2 32)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (bvsge .cse8 (bvmul .cse9 .cse7)) .cse5 .cse6 (= (bvmul .cse7 .cse9) ULTIMATE.start_main_~b~0)))))) [2021-10-13 08:11:42,696 INFO L860 garLoopResultBuilder]: At program point L65(lines 22 66) the Hoare annotation is: true [2021-10-13 08:11:42,696 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:11:42,696 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:11:42,696 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) ULTIMATE.start_main_~x~0)) (.cse1 ((_ sign_extend 32) ULTIMATE.start_main_~y~0))) (and (bvsle ULTIMATE.start_main_~x~0 (_ bv2 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= .cse0 ULTIMATE.start_main_~r~0) (= (bvmul .cse1 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~b~0) (bvsge ULTIMATE.start_main_~y~0 (_ bv1 32)) (bvsge .cse0 (bvmul ((_ sign_extend 32) (_ bv2 32)) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) ULTIMATE.start_main_~q~0) (= ((_ sign_extend 32) (_ bv1 32)) ULTIMATE.start_main_~a~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) [2021-10-13 08:11:42,697 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-13 08:11:42,697 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-13 08:11:42,697 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:11:42,697 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:11:42,697 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:11:42,698 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:11:42,698 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:11:42,698 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:11:42,698 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:11:42,698 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-13 08:11:42,699 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:11:42,699 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 08:11:42,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:11:42,746 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) 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 08:11:42,757 INFO L168 Benchmark]: Toolchain (without parser) took 338138.18 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 38.5 MB in the beginning and 25.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:42,757 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 41.4 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:11:42,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.58 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 27.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:42,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.30 ms. Allocated memory is still 60.8 MB. Free memory was 27.6 MB in the beginning and 43.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:42,759 INFO L168 Benchmark]: Boogie Preprocessor took 58.98 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 41.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:11:42,759 INFO L168 Benchmark]: RCFGBuilder took 1020.14 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 30.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:42,760 INFO L168 Benchmark]: TraceAbstraction took 336715.48 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.0 MB in the beginning and 25.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:42,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 41.4 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.58 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 27.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.30 ms. Allocated memory is still 60.8 MB. Free memory was 27.6 MB in the beginning and 43.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.98 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 41.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1020.14 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 30.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 336715.48 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.0 MB in the beginning and 25.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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, 43 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 336584.9ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 22.3ms, AutomataDifference: 154852.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 38536.2ms, InitialAbstractionConstructionTime: 32.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 94 SDtfs, 660 SDslu, 234 SDs, 0 SdLazy, 774 SolverSat, 552 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 49437.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 511 GetRequests, 388 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 185341.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=4, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 83.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 30 NumberOfFragments, 962 HoareAnnotationTreeSize, 10 FomulaSimplifications, 572 FormulaSimplificationTreeSizeReduction, 294.3ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 831 FormulaSimplificationTreeSizeReductionInter, 38233.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 88.2ms SsaConstructionTime, 1719.1ms SatisfiabilityAnalysisTime, 137811.8ms InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 460 ConstructedInterpolants, 36 QuantifiedInterpolants, 5945 SizeOfPredicates, 87 NumberOfNonLiveVariables, 588 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 62/168 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 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((~bvsle32(x, 2bv32) && cond == 1bv32) && ~sign_extendFrom8To32(x) == r) && ~bvmul64(~sign_extendFrom8To32(y), a) == b) && ~bvsge64(y, 1bv32)) && ~sign_extendFrom8To32(0bv32) == q) && ~sign_extendFrom8To32(1bv32) == a) && cond == 1bv32) && ~bvsge64(r, ~sign_extendFrom8To32(y))) || ((((((((~bvsle32(x, 2bv32) && cond == 1bv32) && ~sign_extendFrom8To32(x) == r) && ~bvmul64(~sign_extendFrom8To32(y), a) == b) && ~bvsge64(y, 1bv32)) && ~bvsge64(~sign_extendFrom8To32(x), ~bvmul64(~sign_extendFrom8To32(2bv32), ~sign_extendFrom8To32(y)))) && ~sign_extendFrom8To32(0bv32) == q) && cond == 1bv32) && ~bvmul64(~sign_extendFrom8To32(y), ~sign_extendFrom8To32(2bv32)) == b) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((~bvsle32(x, 2bv32) && cond == 1bv32) && ~sign_extendFrom8To32(x) == r) && ~bvmul64(~sign_extendFrom8To32(y), a) == b) && ~bvsge64(y, 1bv32)) && ~bvsge64(~sign_extendFrom8To32(x), ~bvmul64(~sign_extendFrom8To32(2bv32), ~sign_extendFrom8To32(y)))) && ~sign_extendFrom8To32(0bv32) == q) && ~sign_extendFrom8To32(1bv32) == a) && cond == 1bv32 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((((((~bvsle32(x, 2bv32) && cond == 1bv32) && ~sign_extendFrom8To32(x) == r) && ~bvmul64(~sign_extendFrom8To32(y), a) == b) && ~bvsge64(y, 1bv32)) && ~sign_extendFrom8To32(0bv32) == q) && ~sign_extendFrom8To32(1bv32) == a) && cond == 1bv32) && ~bvsge64(r, ~sign_extendFrom8To32(y))) || ((((((((~bvsle32(x, 2bv32) && cond == 1bv32) && ~sign_extendFrom8To32(x) == r) && ~bvmul64(~sign_extendFrom8To32(y), a) == b) && ~bvsge64(y, 1bv32)) && ~bvsge64(~sign_extendFrom8To32(x), ~bvmul64(~sign_extendFrom8To32(2bv32), ~sign_extendFrom8To32(y)))) && ~sign_extendFrom8To32(0bv32) == q) && cond == 1bv32) && ~bvmul64(~sign_extendFrom8To32(y), ~sign_extendFrom8To32(2bv32)) == b) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((~bvsle32(x, 2bv32) && cond == 1bv32) && ~sign_extendFrom8To32(x) == r) && ~bvmul64(~sign_extendFrom8To32(y), a) == b) && ~bvsge64(y, 1bv32)) && ~sign_extendFrom8To32(0bv32) == q) && ~sign_extendFrom8To32(1bv32) == a) && cond == 1bv32) && ~bvsge64(r, ~sign_extendFrom8To32(y))) || ((((((((~bvsle32(x, 2bv32) && cond == 1bv32) && ~sign_extendFrom8To32(x) == r) && ~bvmul64(~sign_extendFrom8To32(y), a) == b) && ~bvsge64(y, 1bv32)) && ~bvsge64(~sign_extendFrom8To32(x), ~bvmul64(~sign_extendFrom8To32(2bv32), ~sign_extendFrom8To32(y)))) && ~sign_extendFrom8To32(0bv32) == q) && cond == 1bv32) && ~bvmul64(~sign_extendFrom8To32(y), ~sign_extendFrom8To32(2bv32)) == b) - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:11:42,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0374188-014a-40b4-a64c-f1579746f293/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...