./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:16:44,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:16:44,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:16:44,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:16:44,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:16:44,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:16:44,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:16:44,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:16:44,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:16:44,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:16:44,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:16:44,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:16:44,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:16:44,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:16:44,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:16:44,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:16:44,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:16:44,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:16:44,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:16:44,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:16:44,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:16:44,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:16:44,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:16:44,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:16:44,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:16:44,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:16:44,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:16:44,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:16:44,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:16:44,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:16:44,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:16:44,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:16:44,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:16:44,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:16:44,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:16:44,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:16:44,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:16:44,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:16:44,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:16:44,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:16:44,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:16:44,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:16:44,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:16:44,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:16:44,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:16:44,826 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:16:44,827 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:16:44,827 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:16:44,827 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:16:44,827 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:16:44,828 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:16:44,828 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:16:44,836 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:16:44,836 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:16:44,837 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:16:44,837 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:16:44,837 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:16:44,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:16:44,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:16:44,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:16:44,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:16:44,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:16:44,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:16:44,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:16:44,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:16:44,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:16:44,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:16:44,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:16:44,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:16:44,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:16:44,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:16:44,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:16:44,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:16:44,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:16:44,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:16:44,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:16:44,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:16:44,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:16:44,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:16:44,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:16:44,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:16:44,847 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_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 [2021-10-24 10:16:45,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:16:45,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:16:45,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:16:45,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:16:45,234 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:16:45,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2021-10-24 10:16:45,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/data/db9c15860/a10d596db93a45318fa117e8be1fcad9/FLAG8b63ef7d1 [2021-10-24 10:16:45,869 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:16:45,872 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2021-10-24 10:16:45,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/data/db9c15860/a10d596db93a45318fa117e8be1fcad9/FLAG8b63ef7d1 [2021-10-24 10:16:46,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/data/db9c15860/a10d596db93a45318fa117e8be1fcad9 [2021-10-24 10:16:46,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:16:46,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:16:46,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:16:46,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:16:46,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:16:46,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fd735c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46, skipping insertion in model container [2021-10-24 10:16:46,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:16:46,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:16:46,428 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_d257ad2b-a033-4f75-ba89-04b277bee59a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c[458,471] [2021-10-24 10:16:46,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:16:46,451 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:16:46,464 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_d257ad2b-a033-4f75-ba89-04b277bee59a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c[458,471] [2021-10-24 10:16:46,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:16:46,484 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:16:46,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46 WrapperNode [2021-10-24 10:16:46,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:16:46,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:16:46,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:16:46,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:16:46,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:16:46,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:16:46,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:16:46,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:16:46,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:16:46,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:16:46,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:16:46,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:16:46,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (1/1) ... [2021-10-24 10:16:46,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:16:46,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:16:46,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:16:46,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:16:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:16:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:16:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:16:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:16:46,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:16:46,947 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-24 10:16:46,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:16:46 BoogieIcfgContainer [2021-10-24 10:16:46,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:16:46,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:16:46,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:16:46,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:16:46,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:16:46" (1/3) ... [2021-10-24 10:16:46,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230ad6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:16:46, skipping insertion in model container [2021-10-24 10:16:46,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:16:46" (2/3) ... [2021-10-24 10:16:46,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230ad6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:16:46, skipping insertion in model container [2021-10-24 10:16:46,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:16:46" (3/3) ... [2021-10-24 10:16:46,973 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound1.c [2021-10-24 10:16:46,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:16:46,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 10:16:47,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:16:47,114 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:16:47,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:16:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:16:47,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:16:47,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:16:47,143 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:16:47,144 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:16:47,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:16:47,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2997072, now seen corresponding path program 1 times [2021-10-24 10:16:47,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:16:47,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532658473] [2021-10-24 10:16:47,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:16:47,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:16:47,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:16:47,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462535177] [2021-10-24 10:16:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:16:47,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:16:47,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:16:47,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:16:47,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:16:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:16:47,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:16:47,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:16:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:16:47,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:16:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:16:47,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:16:47,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532658473] [2021-10-24 10:16:47,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:16:47,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462535177] [2021-10-24 10:16:47,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462535177] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:16:47,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:16:47,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:16:47,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61810565] [2021-10-24 10:16:47,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:16:47,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:16:47,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:16:47,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:16:47,761 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-10-24 10:17:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:19,080 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-10-24 10:17:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:17:19,082 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 [2021-10-24 10:17:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:19,088 INFO L225 Difference]: With dead ends: 36 [2021-10-24 10:17:19,088 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 10:17:19,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30561.1ms TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2021-10-24 10:17:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 10:17:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 10:17:19,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-10-24 10:17:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-24 10:17:19,126 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-10-24 10:17:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:19,127 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-24 10:17:19,128 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) [2021-10-24 10:17:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-24 10:17:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:17:19,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:19,131 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-24 10:17:19,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:19,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:17:19,339 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:17:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:19,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1480619493, now seen corresponding path program 1 times [2021-10-24 10:17:19,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:19,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533517607] [2021-10-24 10:17:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:19,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:19,363 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:17:19,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758172789] [2021-10-24 10:17:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:19,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:17:19,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:19,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:17:19,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:17:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:19,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-24 10:17:19,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:19,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:35,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:35,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533517607] [2021-10-24 10:17:35,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:17:35,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758172789] [2021-10-24 10:17:35,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758172789] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:17:35,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1964490263] [2021-10-24 10:17:35,726 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-24 10:17:35,727 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:17:35,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:17:35,736 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:17:35,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:17:35,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,769 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:17:35,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:17:35,771 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:17:35,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:17:35,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-24 10:17:35,800 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-24 10:17:35,814 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:17:35,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:17:35,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:17:35,817 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:17:35,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 10:17:35,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:17:35,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:17:35,860 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:17:35,867 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:17:35,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:17:35,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:17:35,870 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:17:35,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:35,915 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:17:35,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 10:17:35,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:17:35,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:17:35,945 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 10:17:35,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:35,981 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:35,990 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-10-24 10:17:36,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-24 10:17:36,003 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:17:36,004 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:444, output treesize:116 [2021-10-24 10:17:36,020 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:17:36,032 INFO L185 QuantifierPusher]: treesize reduction 12, result has 92.9 percent of original size 156 [2021-10-24 10:17:36,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:36,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:36,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:36,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:36,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:36,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:17:36,160 INFO L180 QuantifierPusher]: treesize reduction 57, result has 69.4 percent of original size [2021-10-24 10:17:36,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-24 10:17:36,182 INFO L180 QuantifierPusher]: treesize reduction 65, result has 68.0 percent of original size [2021-10-24 10:17:36,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:17:36,201 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:17:37,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:17:37,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:17:37,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-24 10:17:37,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973331804] [2021-10-24 10:17:37,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-24 10:17:37,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:37,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-24 10:17:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-10-24 10:17:37,258 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 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) [2021-10-24 10:18:18,666 WARN L207 SmtUtils]: Spent 12.47 s on a formula simplification that was a NOOP. DAG size: 51 [2021-10-24 10:18:32,898 WARN L207 SmtUtils]: Spent 8.17 s on a formula simplification that was a NOOP. DAG size: 41 [2021-10-24 10:19:10,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:10,544 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-24 10:19:10,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-24 10:19:10,545 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 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 10 [2021-10-24 10:19:10,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:10,546 INFO L225 Difference]: With dead ends: 28 [2021-10-24 10:19:10,546 INFO L226 Difference]: Without dead ends: 20 [2021-10-24 10:19:10,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 99794.9ms TimeCoverageRelationStatistics Valid=200, Invalid=646, Unknown=24, NotChecked=0, Total=870 [2021-10-24 10:19:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-24 10:19:10,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-24 10:19:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:10,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-24 10:19:10,556 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2021-10-24 10:19:10,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:10,556 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-24 10:19:10,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 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) [2021-10-24 10:19:10,557 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-24 10:19:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 10:19:10,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:19:10,558 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1] [2021-10-24 10:19:10,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-24 10:19:10,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-24 10:19:10,774 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:19:10,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:19:10,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2122995756, now seen corresponding path program 2 times [2021-10-24 10:19:10,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:19:10,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554520679] [2021-10-24 10:19:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:19:10,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:19:10,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:19:10,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095982097] [2021-10-24 10:19:10,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 10:19:10,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:19:10,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:19:10,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:19:10,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:19:10,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-24 10:19:10,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 10:19:10,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:19:10,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:19:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:11,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:19:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:19:11,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:19:11,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554520679] [2021-10-24 10:19:11,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:19:11,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095982097] [2021-10-24 10:19:11,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095982097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:19:11,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:19:11,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-24 10:19:11,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470299083] [2021-10-24 10:19:11,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 10:19:11,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:19:11,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 10:19:11,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:19:11,169 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:11,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:19:11,179 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-24 10:19:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:19:11,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-24 10:19:11,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:19:11,181 INFO L225 Difference]: With dead ends: 20 [2021-10-24 10:19:11,181 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:19:11,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:19:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:19:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:19:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:19:11,182 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-24 10:19:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:19:11,183 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:19:11,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:19:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:19:11,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:19:11,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:11,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:11,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:19:11,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:19:11,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-24 10:19:11,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:19:11,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:11,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:11,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:11,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:19:11,790 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~k~0 1))) (or (and (< 0 ULTIMATE.start_main_~k~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (= ULTIMATE.start_main_~y~0 1) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 1) ULTIMATE.start_main_~k~0) (= (+ (* 2 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 1) (+ ULTIMATE.start_main_~k~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0))) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0))) (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) (= ULTIMATE.start_main_~x~0 0) .cse0 (= ULTIMATE.start_main_~c~0 0)))) [2021-10-24 10:19:11,790 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-24 10:19:11,790 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2021-10-24 10:19:11,791 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-24 10:19:11,791 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-24 10:19:11,791 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-24 10:19:11,791 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:19:11,791 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-24 10:19:11,791 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:19:11,791 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-24 10:19:11,791 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-24 10:19:11,792 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~k~0 1))) (or (and (< 0 ULTIMATE.start_main_~k~0) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 1) ULTIMATE.start_main_~k~0) (= (+ (* 2 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 1) (+ ULTIMATE.start_main_~k~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0))) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0))) (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (= ULTIMATE.start_main_~c~0 0)))) [2021-10-24 10:19:11,792 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-24 10:19:11,792 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0)) [2021-10-24 10:19:11,792 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-24 10:19:11,792 INFO L853 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0))) [2021-10-24 10:19:11,796 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:19:11,805 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,805 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,806 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,806 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,835 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,838 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,838 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,838 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,838 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:19:11 BoogieIcfgContainer [2021-10-24 10:19:11,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:19:11,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:19:11,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:19:11,845 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:19:11,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:16:46" (3/4) ... [2021-10-24 10:19:11,849 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:19:11,859 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-24 10:19:11,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-24 10:19:11,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:19:11,860 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:19:11,924 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:19:11,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:19:11,926 INFO L168 Benchmark]: Toolchain (without parser) took 145712.84 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 64.7 MB in the beginning and 93.5 MB in the end (delta: -28.7 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:11,926 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:19:11,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.81 ms. Allocated memory is still 98.6 MB. Free memory was 64.5 MB in the beginning and 73.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:11,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.72 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:11,927 INFO L168 Benchmark]: Boogie Preprocessor took 23.16 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 70.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:11,928 INFO L168 Benchmark]: RCFGBuilder took 403.48 ms. Allocated memory is still 98.6 MB. Free memory was 70.4 MB in the beginning and 58.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:11,928 INFO L168 Benchmark]: TraceAbstraction took 144886.95 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 57.8 MB in the beginning and 39.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:11,928 INFO L168 Benchmark]: Witness Printer took 85.29 ms. Allocated memory is still 119.5 MB. Free memory was 39.9 MB in the beginning and 93.5 MB in the end (delta: -53.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:19:11,931 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.81 ms. Allocated memory is still 98.6 MB. Free memory was 64.5 MB in the beginning and 73.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.72 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.16 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 70.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 403.48 ms. Allocated memory is still 98.6 MB. Free memory was 70.4 MB in the beginning and 58.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 144886.95 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 57.8 MB in the beginning and 39.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. * Witness Printer took 85.29 ms. Allocated memory is still 119.5 MB. Free memory was 39.9 MB in the beginning and 93.5 MB in the end (delta: -53.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 144708.0ms, OverallIterations: 3, TraceHistogramMax: 5, EmptinessCheckTime: 17.6ms, AutomataDifference: 124655.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 395.6ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 56 SDslu, 20 SDs, 0 SdLazy, 86 SolverSat, 32 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4916.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 130403.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 191 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 19.4ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 133 FormulaSimplificationTreeSizeReductionInter, 368.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 19.6ms SsaConstructionTime, 75.8ms SatisfiabilityAnalysisTime, 16833.9ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 60 ConstructedInterpolants, 3 QuantifiedInterpolants, 608 SizeOfPredicates, 13 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 60/66 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 3 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant [2021-10-24 10:19:11,951 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,951 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,951 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,952 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,953 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,954 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,954 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,954 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] Derived loop invariant: (((((0 < k && k <= 1) && 1 == cond) && y == 1) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 1 < ULTIMATE.start_main_~k~0 || 2 * y + y * y + 1 == ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0) || ULTIMATE.start_main_~k~0 <= c)) && y * y * y * y + y * y + 2 * (y * y * y) == 4 * x) || (((((y == 0 && 0 <= k) && x == 0) && 1 <= cond) && k <= 1) && c == 0) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 <= cond && y * y * y * y + y * y + 2 * (y * y * y) == 4 * x - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: y * y * y * y + y * y + 2 * (y * y * y) == 4 * x - InvariantResult [Line: 27]: Loop Invariant [2021-10-24 10:19:11,958 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,959 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,959 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,959 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,959 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,960 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,960 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:19:11,961 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] Derived loop invariant: (((((0 < k && 1 <= cond) && k <= 1) && y == 1) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 1 < ULTIMATE.start_main_~k~0 || 2 * y + y * y + 1 == ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0) || ULTIMATE.start_main_~k~0 <= c)) && y * y * y * y + y * y + 2 * (y * y * y) == 4 * x) || ((((y == 0 && 0 <= k) && x == 0) && k <= 1) && c == 0) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:19:11,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d257ad2b-a033-4f75-ba89-04b277bee59a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...